Supplement Facts
Serving Size: 1 Veggie Capsule
Serving Per Container: 90
Amount Per Serving
%DV
Zinc (as zinc bisglycinate chelate) (Albion®)
50 mg
455%
The product is found useful for the following medical conditions
Chronic Cough details
SCIENTIFIC SCORE
Very Likely Ineffective
Based on 1 Research
2
USERS' SCORE
Good
Based on 2 Reviews
8.5
2
Researchers tested whether zinc acetate could help people suffering from persistent, hard-to-treat cough. In this randomized, placebo-controlled pilot study, 34 participants received either zinc acetate or placebo for 6 weeks, with improvements measured using four different cough and quality-of-life scales.
While zinc successfully increased serum zinc levels in treated participants, both groups improved similarly across all measures. The improvements in cough symptoms and quality of life were too small to meet clinically meaningful thresholds, suggesting zinc acetate offers no real advantage over placebo for chronic cough sufferers.
While zinc successfully increased serum zinc levels in treated participants, both groups improved similarly across all measures. The improvements in cough symptoms and quality of life were too small to meet clinically meaningful thresholds, suggesting zinc acetate offers no real advantage over placebo for chronic cough sufferers.
9
Reduced coughing
Most Useful Review
These Help Lounges have been remarkable for me. As a marijuana smoker with lung damage following Covid, these pills have alleviated the chronic cough I used to experience. They begin to take effect in under 30 minutes, which is absolutely astonishing.
Updated: Apr 2026
Cold Sores details
SCIENTIFIC SCORE
Moderately Effective
Based on 9 Researches
8.2
USERS' SCORE
Good
Based on 3 Reviews
8.5
9
We conducted a double-blind, placebo-controlled clinical trial to explore the effectiveness of a zinc oxide/glycine cream in treating cold sores caused by facial and circumoral herpes. By dividing 46 participants into two groups, one receiving the zinc treatment and the other a placebo, we aimed to measure how this formulation affected the duration and severity of cold sore symptoms.
Our results were quite promising! Participants who began using the zinc oxide/glycine cream within the first 24 hours of noticing symptoms experienced cold sore lesions that lasted only an average of 5 days, compared to 6.5 days for those on the placebo. Additionally, we noticed a significant reduction in the overall severity of their symptoms, including blistering, soreness, itching, and tingling.
As for side effects, subjects treated with the zinc cream experienced only minor and reversible issues typical of ionic zinc salt solutions. This indicates that the zinc oxide/glycine cream is not only effective but also safe for treating cold sores, presenting a valuable option for many people seeking relief from this common condition.
Our results were quite promising! Participants who began using the zinc oxide/glycine cream within the first 24 hours of noticing symptoms experienced cold sore lesions that lasted only an average of 5 days, compared to 6.5 days for those on the placebo. Additionally, we noticed a significant reduction in the overall severity of their symptoms, including blistering, soreness, itching, and tingling.
As for side effects, subjects treated with the zinc cream experienced only minor and reversible issues typical of ionic zinc salt solutions. This indicates that the zinc oxide/glycine cream is not only effective but also safe for treating cold sores, presenting a valuable option for many people seeking relief from this common condition.
9
Stops herpes outbreaks
Most Useful Review
2 people found this helpful
I take zinc on my endocrinologist's recommendation to support my thyroid, alongside iodine and selenium. I have consumed it consistently for three years, taking it for three months, followed by a 1.5 month break. It is well tolerated and suits me well. Since I began the zinc, iodine, selenium, and vitamin D3 regimen, my cold sores have practically ceased; previously, they appeared every two months. I also experience far fewer colds; if I notice the onset of illness, I take a double dose for two to three days, and it effectively prevents me from becoming sick. It truly has an immunostimulatory effect. I periodically try other zinc brands but always return to this one.
Updated: Apr 2025
Flu details
SCIENTIFIC SCORE
Moderately Effective
Based on 6 Researches
8
USERS' SCORE
Good
Based on 2 Reviews
8.5
8
In our study, we examined how epipharyngeal abrasive therapy (EAT), which includes the use of zinc chloride, affects the expression of a key molecule known as Cav1.2. This molecule is essential for the influenza virus to enter cells, making it a crucial target in flu prevention strategies.
We compared two groups of patients: those who received EAT and those who did not. Our findings revealed that the levels of Cav1.2 were significantly lower in the EAT group, at a striking 4.19 times less than in the non-treated group. This suggests that the squamous metaplasia induced by EAT—which is a process of changing the epithelium—could be a beneficial approach to limiting flu infections.
The results of the study highlight zinc's potential indirect role in flu prevention by remarking on its contribution to lowering the expression of a critical receptor for the virus. Although we didn't isolate the effects of zinc alone, the findings indicate that treatments involving zinc, like EAT, may offer a straightforward way to help limit the impact of influenza.
We compared two groups of patients: those who received EAT and those who did not. Our findings revealed that the levels of Cav1.2 were significantly lower in the EAT group, at a striking 4.19 times less than in the non-treated group. This suggests that the squamous metaplasia induced by EAT—which is a process of changing the epithelium—could be a beneficial approach to limiting flu infections.
The results of the study highlight zinc's potential indirect role in flu prevention by remarking on its contribution to lowering the expression of a critical receptor for the virus. Although we didn't isolate the effects of zinc alone, the findings indicate that treatments involving zinc, like EAT, may offer a straightforward way to help limit the impact of influenza.
9
No flu symptoms
Most Useful Review
Excellent! It improves my general condition. As an antiviral supplement, one a day has kept the flu at bay.
Updated: Mar 2026
High Cholesterol details
SCIENTIFIC SCORE
Moderately Effective
Based on 5 Researches
8
USERS' SCORE
Good
Based on 3 Reviews
8.5
We explored how zinc supplementation affects cholesterol levels and body composition in patients with type 2 diabetes. By reviewing data from nineteen randomized controlled trials, involving 1,357 participants, we uncovered significant findings regarding lipid profiles.
Our results revealed that zinc supplementation leads to reduced levels of triglycerides, total cholesterol, and low-density lipoprotein cholesterol (LDL-C). Specifically, we noted reductions of 17.41 mg/dL in triglycerides, 19.60 mg/dL in total cholesterol, and 8.80 mg/dL in LDL-C. Furthermore, we observed an increase in high-density lipoprotein cholesterol (HDL-C) by 4.82 mg/dL, which is often termed "good" cholesterol.
While zinc appears to positively influence cholesterol levels, it's interesting to note that it did not have a significant impact on body weight. The body mass index (BMI) did show a slight decrease of 0.53 kg/m², but overall body weight remained unchanged.
In conclusion, our findings suggest that zinc supplementation could be a beneficial strategy for improving cholesterol levels in individuals with type 2 diabetes, thus contributing positively to their overall health and well-being.
Our results revealed that zinc supplementation leads to reduced levels of triglycerides, total cholesterol, and low-density lipoprotein cholesterol (LDL-C). Specifically, we noted reductions of 17.41 mg/dL in triglycerides, 19.60 mg/dL in total cholesterol, and 8.80 mg/dL in LDL-C. Furthermore, we observed an increase in high-density lipoprotein cholesterol (HDL-C) by 4.82 mg/dL, which is often termed "good" cholesterol.
While zinc appears to positively influence cholesterol levels, it's interesting to note that it did not have a significant impact on body weight. The body mass index (BMI) did show a slight decrease of 0.53 kg/m², but overall body weight remained unchanged.
In conclusion, our findings suggest that zinc supplementation could be a beneficial strategy for improving cholesterol levels in individuals with type 2 diabetes, thus contributing positively to their overall health and well-being.
9
Symptoms resolved
Most Useful Review
1 people found this helpful
The best zinc supplement available! This amazing product is highly bioavailable and offers superior absorption. All my symptoms of low zinc disappeared after just a few weeks of use (such as white spots on my nails, weak immune system, and poor wound healing). The capsules are small, easy to take, and free from unnecessary fillers. I adore all of Doctor's Best products!
Updated: Apr 2025
Whooping Cough details
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 2 Reviews
8.5
9
Stops coughing effectively
Most Useful Review
These Help Lounges have worked wonders for me. As a marijuana smoker with lung damage following Covid, I've found that since taking these pills, I no longer experience the coughing fits that plagued me. It’s absolutely incredible how quickly they take effect—within 30 minutes!
Updated: Apr 2025
Acne details
SCIENTIFIC SCORE
Possibly Effective
Based on 21 Researches
7.5
USERS' SCORE
Good
Based on 4 Reviews
8.4
8
We explored how zinc affects acne through a systematic review and meta-analysis that looked at two main questions. First, we wanted to know if there are differences in zinc levels between people with acne and those without. Second, we examined how effective zinc treatments are for managing acne.
Our findings showed that individuals with acne had noticeably lower serum zinc levels compared to those in the control group. Furthermore, when we looked at treatments, those who received zinc showed a significant reduction in their inflammatory papule count—a common symptom of acne. Importantly, we noted that side effects from zinc supplementation were similar to those seen in other treatments, suggesting that zinc is safe to use.
Overall, acne patients appear to benefit from improved zinc levels, especially when zinc is used either on its own or alongside other acne treatments. This gives hope for those looking for effective ways to tackle acne issues!
Our findings showed that individuals with acne had noticeably lower serum zinc levels compared to those in the control group. Furthermore, when we looked at treatments, those who received zinc showed a significant reduction in their inflammatory papule count—a common symptom of acne. Importantly, we noted that side effects from zinc supplementation were similar to those seen in other treatments, suggesting that zinc is safe to use.
Overall, acne patients appear to benefit from improved zinc levels, especially when zinc is used either on its own or alongside other acne treatments. This gives hope for those looking for effective ways to tackle acne issues!
10
Clean skin
Most Useful Review
This product works excellently for me. Within a few days, I noticed my nails strengthening and becoming shinier, which is a nice bonus. However, my main reason for taking it is to combat my acne. When I take it several times a day, my skin remains perfectly clear!
Updated: Apr 2026
Blurred Vision details
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 4 Reviews
8.4
9
Protects eyes
Most Useful Review
Zinc glycinate offers numerous benefits: it enhances immune function, alleviates sore throat sensations, positively affects heart health, and plays a protective role for vision. Additionally, it supports oral health and helps maintain stable emotions.
Updated: Mar 2026
Bone Pain details
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 2 Reviews
8.3
9
Pain relief achieved
Most Useful Review
1 people found this helpful
Excellent! No longer do I experience debilitating anxiety, chronic pain, muscle spasms, or insomnia. If you're grappling with depression or anxiety, regardless of severity, I urge you to TRY THIS! It has been transformative. I only wish I had discovered it sooner, and I am a physician!
Updated: Apr 2025
Allergies details
SCIENTIFIC SCORE
Moderately Effective
Based on 7 Researches
8.4
USERS' SCORE
Good
Based on 3 Reviews
8.2
9
We investigated how intranasal zinc (Zn) treatment affects symptoms of allergic rhinitis (AR), specifically focusing on individuals suffering from Japanese cedar pollinosis (JCP), a common seasonal allergy. In our study, we monitored 57 control subjects and 44 patients from preseason through the allergy season, observing the levels of Zn in both nasal fluid and serum.
Our findings showed that after exposure to pollen, the level of zinc in the nasal lining fluid of JCP patients significantly increased, while their serum zinc levels notably decreased compared to the control group during the JCP season. To delve deeper, we used model mice that could mimic these changes and the allergy symptoms of the patients.
The results from this mouse study were promising. We observed that treating these mice with a dose of zinc, similar to what humans might use, led to a notable improvement in their allergy symptoms. Additionally, the number of mucin-secreting goblet cells, which indicate a response to allergies, significantly decreased following the zinc treatment.
Our study points towards the potential of using intranasal zinc as a way to alleviate allergy symptoms, suggesting a new approach to managing allergic rhinitis.
Our findings showed that after exposure to pollen, the level of zinc in the nasal lining fluid of JCP patients significantly increased, while their serum zinc levels notably decreased compared to the control group during the JCP season. To delve deeper, we used model mice that could mimic these changes and the allergy symptoms of the patients.
The results from this mouse study were promising. We observed that treating these mice with a dose of zinc, similar to what humans might use, led to a notable improvement in their allergy symptoms. Additionally, the number of mucin-secreting goblet cells, which indicate a response to allergies, significantly decreased following the zinc treatment.
Our study points towards the potential of using intranasal zinc as a way to alleviate allergy symptoms, suggesting a new approach to managing allergic rhinitis.
7.5
Life-changing zinc supplement
Most Useful Review
This is undoubtedly the best and most potent zinc supplement! My entire life improves when I take it; everything seems brighter, and I feel happier. It energises me, but it can make me quite hungry, so it’s better to take it with food. It has truly healed many issues in my body, including my gut, energy, allergies, brain fog, and mental health. I love this stuff!
Updated: Mar 2026
Brain Tumor details
SCIENTIFIC SCORE
Likely Very Effective
Based on 1 Research
9
USERS' SCORE
Good
Based on 3 Reviews
8.2
9
We evaluated the potential of zinc in combination with a ketogenic diet and oxyresveratrol in fighting glioblastoma, a highly aggressive brain tumor. Through a series of carefully designed experiments, we examined how these treatments affect tumor growth and overall brain function.
In our study, we induced brain tumors in Wistar rats and then applied our treatment regimen. We tracked various outcomes, including tumor size, proliferation rates, memory function, and motor coordination. By assessing glucose and ketone levels, we gained insights into the metabolic changes occurring as a result of the treatments.
The findings suggested that zinc played a supportive role alongside the ketogenic diet and oxyresveratrol in reducing tumor growth. Moreover, these treatments appeared to enhance memory and motor coordination, indicating a multi-faceted benefit. Overall, this progression offered valuable information about the role of diet and supplementary compounds in battling aggressive brain tumors like glioblastoma.
In our study, we induced brain tumors in Wistar rats and then applied our treatment regimen. We tracked various outcomes, including tumor size, proliferation rates, memory function, and motor coordination. By assessing glucose and ketone levels, we gained insights into the metabolic changes occurring as a result of the treatments.
The findings suggested that zinc played a supportive role alongside the ketogenic diet and oxyresveratrol in reducing tumor growth. Moreover, these treatments appeared to enhance memory and motor coordination, indicating a multi-faceted benefit. Overall, this progression offered valuable information about the role of diet and supplementary compounds in battling aggressive brain tumors like glioblastoma.
7.5
Improves sleep quality
Most Useful Review
Zinc has a stabilising effect on conditions like insomnia, depression, and other disorders, including those during menopause or old age. The natural ingredients are effective in relieving stress, stimulating brain function, improving concentration, and elevating performance. The medium-sized capsules contain GABA, which enhances sleep quality by limiting stress effects, ensuring deeper, more restorative sleep. The dosage is well-calibrated.
Updated: Apr 2025
Common Cold details
SCIENTIFIC SCORE
Possibly Effective
Based on 6 Researches
7.3
USERS' SCORE
Good
Based on 8 Reviews
8.2
9
We explored how zinc lozenges affect the duration of the common cold through a detailed analysis of multiple trials. In particular, we focused on the Mossad (1996) trial involving zinc gluconate lozenges, which revealed an average reduction of cold duration by about 4.0 days. While that sounds promising, our findings through a quantile treatment effect (QTE) analysis tell a more nuanced story.
Interestingly, the QTE analysis showed that for individuals suffering from lengthy colds lasting 15 to 17 days, the zinc lozenges could shorten their illness by as much as 8 days. On the flip side, those with shorter, 2-day colds only experienced a 1-day reduction in sickness. This suggests that while zinc may help, its effectiveness varies significantly depending on the initial duration of the cold, making the overall average effect less informative than we might think.
Our examination extended to three trials that used zinc acetate lozenges, yielding a similar average reduction of around 2.7 days. However, again, those averages concealed varying effects for short and long colds, highlighting the importance of looking beyond simple averages in treatment studies.
Overall, we observed that zinc lozenges can indeed help with cold duration, but the extent of that help is very much dependent on how long a person has been suffering. This approach to understanding treatment effects through QTE analysis could have important implications not just for cold treatment but also for analyzing other health outcomes.
Interestingly, the QTE analysis showed that for individuals suffering from lengthy colds lasting 15 to 17 days, the zinc lozenges could shorten their illness by as much as 8 days. On the flip side, those with shorter, 2-day colds only experienced a 1-day reduction in sickness. This suggests that while zinc may help, its effectiveness varies significantly depending on the initial duration of the cold, making the overall average effect less informative than we might think.
Our examination extended to three trials that used zinc acetate lozenges, yielding a similar average reduction of around 2.7 days. However, again, those averages concealed varying effects for short and long colds, highlighting the importance of looking beyond simple averages in treatment studies.
Overall, we observed that zinc lozenges can indeed help with cold duration, but the extent of that help is very much dependent on how long a person has been suffering. This approach to understanding treatment effects through QTE analysis could have important implications not just for cold treatment but also for analyzing other health outcomes.
7.5
Immunostimulating support
Most Useful Review
2 people found this helpful
I take zinc based on my endocrinologist’s recommendation to support my thyroid alongside iodine and selenium. I've been using it for three years in cycles of three months on and 1.5 months off, and it’s well tolerated without negative effects. Since starting this regimen, my herpes has lessened, and I've noticed a significant reduction in colds. If I feel a cold coming on, I double the dose for two or three days, and it prevents illness.
Updated: Apr 2025
Sleep Apnea details
SCIENTIFIC SCORE
Likely Very Effective
Based on 1 Research
9
USERS' SCORE
Good
Based on 4 Reviews
8.2
9
We explored how zinc affects heart function in the context of obstructive sleep apnea (OSA), specifically focusing on cases of intermittent hypoxia (IH). In a detailed study using male rats, researchers set up different groups: a control group and one that underwent 10 weeks of exercise training. Half of the rats in both groups were exposed to IH conditions to simulate the effects of sleep apnea.
The results were eye-opening. Rats that experienced IH showed notable impairment in their heart's left ventricular function, characterized by reduced ejection fraction and increased inflammation. However, when treated with zinc, these negative effects were significantly countered. Notably, those who exercised and received zinc treatment displayed improved heart function and antioxidant capabilities compared to their counterparts that did not receive zinc.
On the flip side, exercise alone did not provide the same protective benefits when zinc was absent. The findings suggest that zinc is essential not only for the heart's protection against the damaging effects of IH but also enhances the benefits of physical exercise. This research indicates the importance of zinc in potentially managing heart health in individuals suffering from sleep apnea.
The results were eye-opening. Rats that experienced IH showed notable impairment in their heart's left ventricular function, characterized by reduced ejection fraction and increased inflammation. However, when treated with zinc, these negative effects were significantly countered. Notably, those who exercised and received zinc treatment displayed improved heart function and antioxidant capabilities compared to their counterparts that did not receive zinc.
On the flip side, exercise alone did not provide the same protective benefits when zinc was absent. The findings suggest that zinc is essential not only for the heart's protection against the damaging effects of IH but also enhances the benefits of physical exercise. This research indicates the importance of zinc in potentially managing heart health in individuals suffering from sleep apnea.
9
Helpful for sleep
Most Useful Review
It is very helpful for sleeping and is in capsule form that is easy to swallow.
Updated: Apr 2025
Heartburn details
SCIENTIFIC SCORE
Likely Very Effective
Based on 1 Research
9
USERS' SCORE
Good
Based on 2 Reviews
8
9
We investigated how zinc affects heartburn through the case of a 76-year-old Japanese man who experienced significant discomfort after undergoing a total gastrectomy. For two weeks, he suffered from a sore throat, heartburn, and difficulty swallowing. Endoscopy revealed deep, craterlike ulcers in his esophagus, but tests for viral infections were negative.
After initial treatment, his symptoms returned, prompting further investigation. Eventually, we found that his serum zinc level was low at 38 µg/dL, which led to a diagnosis of zinc deficiency. Following oral zinc supplementation, the patient reported relief from his symptoms and a noticeable improvement in the esophageal ulcers observed during a follow-up endoscopy.
Over the five years since his treatment, the patient has continued to take zinc supplements and has not faced similar issues again. This case suggests that zinc can play a crucial role in treating heartburn issues related to ulcers, especially in those with a deficiency.
After initial treatment, his symptoms returned, prompting further investigation. Eventually, we found that his serum zinc level was low at 38 µg/dL, which led to a diagnosis of zinc deficiency. Following oral zinc supplementation, the patient reported relief from his symptoms and a noticeable improvement in the esophageal ulcers observed during a follow-up endoscopy.
Over the five years since his treatment, the patient has continued to take zinc supplements and has not faced similar issues again. This case suggests that zinc can play a crucial role in treating heartburn issues related to ulcers, especially in those with a deficiency.
9
Effective product
Most Useful Review
This product works excellently and doesn’t cause me any heartburn.
Updated: Apr 2025
Autoimmune Disorder details
SCIENTIFIC SCORE
Possibly Effective
Based on 6 Researches
7.5
USERS' SCORE
Moderately Good
Based on 2 Reviews
7.9
9
Zinc supplementation benefits MS models
We explored how dietary zinc levels influence spinal cord damage and gene expressions associated with Multiple Sclerosis (MS) using a cuprizone-induced rat model. The study included 46 adult male Wistar rats divided into five groups, with some receiving zinc supplementation while others followed a zinc-deficient diet.
After eight weeks of treatment, we found that the rats with MS symptoms showed elevated markers of tissue damage and inflammation, particularly in the groups that lacked zinc. Notably, those receiving zinc supplementation exhibited significantly reduced levels of harmful substances, bringing them back closer to control levels.
Our findings highlight zinc's protective effects in a model of MS, suggesting that incorporating zinc into treatment plans could help alleviate some symptoms associated with this autoimmune disorder. This is promising for future treatment strategies for those affected by MS.
After eight weeks of treatment, we found that the rats with MS symptoms showed elevated markers of tissue damage and inflammation, particularly in the groups that lacked zinc. Notably, those receiving zinc supplementation exhibited significantly reduced levels of harmful substances, bringing them back closer to control levels.
Our findings highlight zinc's protective effects in a model of MS, suggesting that incorporating zinc into treatment plans could help alleviate some symptoms associated with this autoimmune disorder. This is promising for future treatment strategies for those affected by MS.
4
Supports hair and skin health
Most Useful Review
Quality and quantity are great. This is my second order, recognising the benefits of zinc for the body, particularly for hair and skin. A three-month supply means I can maintain a full course. In just two months, my zinc levels rose by 30%, and I intend to continue until I achieve the full benefits. It’s taste-free and includes important antioxidants; I believe after six months this could be the best choice.
Updated: Mar 2026
Hair Loss details
SCIENTIFIC SCORE
Possibly Effective
Based on 9 Researches
7.6
USERS' SCORE
Moderately Good
Based on 14 Reviews
7.9
9
We explored how zinc acetate hydrate impacts hair loss for patients experiencing symptoms after COVID-19. In our analysis, we looked at 120 symptomatic outpatients over 12 weeks, observing their recovery patterns and any improvements in their symptoms. The focus was on various lingering effects, including fatigue and hair loss, particularly how zinc could potentially alleviate these issues.
Our findings highlighted significant improvements in hair loss for those treated with zinc acetate hydrate at multiple checkpoints (4, 8, and 12 weeks) compared to those who did not receive this treatment. The results were statistically significant and suggested that zinc could be a useful option for those struggling with hair loss post-COVID-19.
Additionally, we noted improvements in fatigue among those receiving zinc, although this was not as pronounced at all time intervals. As a whole, our study emphasized zinc's beneficial effects, particularly for hair loss, providing promising insights for anyone dealing with these challenging post-viral symptoms.
Our findings highlighted significant improvements in hair loss for those treated with zinc acetate hydrate at multiple checkpoints (4, 8, and 12 weeks) compared to those who did not receive this treatment. The results were statistically significant and suggested that zinc could be a useful option for those struggling with hair loss post-COVID-19.
Additionally, we noted improvements in fatigue among those receiving zinc, although this was not as pronounced at all time intervals. As a whole, our study emphasized zinc's beneficial effects, particularly for hair loss, providing promising insights for anyone dealing with these challenging post-viral symptoms.
9
Helps with hair loss
Most Useful Review
1 people found this helpful
It is effective for hair loss post-COVID-19. I experienced severe hair loss and lip skin peeling, but taking zinc has significantly helped.
Updated: Mar 2026
Cold details
SCIENTIFIC SCORE
Moderately Effective
Based on 3 Researches
8.3
USERS' SCORE
Moderately Good
Based on 42 Reviews
7.8
8
We explored how zinc might help in treating and preventing the common cold. The study focused on zinc's effects, isolating it from other treatments to understand its true impact on cold symptoms. By doing this, the researchers aimed to clarify whether zinc could genuinely shorten the duration of a cold or alleviate its symptoms.
The findings were intriguing but showed that zinc might not yield significant benefits for everyone. While some individuals reported a slight reduction in cold symptoms, the evidence did not strongly support zinc as an effective treatment overall.
This means that, for those seeking relief from a nasty cold, zinc alone might not be the go-to solution we hoped it would be. It’s essential to consider this information when deciding on a cold treatment plan and to approach zinc with realistic expectations.
The findings were intriguing but showed that zinc might not yield significant benefits for everyone. While some individuals reported a slight reduction in cold symptoms, the evidence did not strongly support zinc as an effective treatment overall.
This means that, for those seeking relief from a nasty cold, zinc alone might not be the go-to solution we hoped it would be. It’s essential to consider this information when deciding on a cold treatment plan and to approach zinc with realistic expectations.
8
Basic vitamin during cold
Most Useful Review
30 people found this helpful
Excellent! After having COVID-19 and during a cold, this has become one of the essential vitamins for me.
Updated: Mar 2026
Nausea details
SCIENTIFIC SCORE
Questionable
Based on 4 Researches
5.5
USERS' SCORE
Moderately Good
Based on 10 Reviews
7.6
7
Zinc treatment reduces nausea risk
We conducted a study to evaluate how effective NPC-25, a new form of zinc, is compared to a well-known treatment, NOBELZIN™, for patients with low zinc levels. Participants in this trial had their zinc levels checked and were grouped to receive either NPC-25 or NOBELZIN™.
For a period of up to 24 weeks, we aimed to maintain their zinc levels within a specific target range while closely monitoring for side effects. One of our main goals was to see if NPC-25 could maintain these target zinc levels similarly to NOBELZIN™.
Our findings revealed that NPC-25 was indeed non-inferior to NOBELZIN™, meaning it worked just as well. Importantly, we also observed that those taking NPC-25 reported fewer digestive issues, like nausea and vomiting. This suggests that while both treatments were effective, NPC-25 might be the gentler option.
For a period of up to 24 weeks, we aimed to maintain their zinc levels within a specific target range while closely monitoring for side effects. One of our main goals was to see if NPC-25 could maintain these target zinc levels similarly to NOBELZIN™.
Our findings revealed that NPC-25 was indeed non-inferior to NOBELZIN™, meaning it worked just as well. Importantly, we also observed that those taking NPC-25 reported fewer digestive issues, like nausea and vomiting. This suggests that while both treatments were effective, NPC-25 might be the gentler option.
10
No nausea
Most Useful Review
I'm satisfied with it; it absorbs easily and produces no nausea.
Updated: Mar 2026
Pelvic Pain details
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Moderately Good
Based on 3 Reviews
7.4
7.5
Pain reduction noted
Most Useful Review
Excellent! I am currently in my second week on mg, in combination with other medications, and I feel much better; my immunity has improved. The pain is less intense! This indicates quality ingredients. Good health management! The packaging and size match the description and photograph. I am happy with the results as I work to address my zinc deficiency.
Updated: Apr 2025
Food Poisoning details
SCIENTIFIC SCORE
Moderately Effective
Based on 3 Researches
8.5
USERS' SCORE
Moderately Good
Based on 2 Reviews
7.2
9.5
We set out to explore how zinc oxide nanoparticles (ZnO NPs) could help control the bacteria responsible for food poisoning in raw chicken meat. Our approach involved integrating these nanoparticles into packaging materials to see if they could effectively inactivate Campylobacter jejuni, a common and concerning pathogen in poultry.
Through our experiments, we discovered that immobilizing ZnO NPs in functional pads placed under raw chicken could dramatically reduce bacterial counts. In fact, we saw a reduction from about 4 log CFU to an undetectable level within just three days when storing chicken at 4°C. Notably, we monitored zinc levels in the chicken meat, confirming a safe release of zinc without any migration of nanoparticles onto the food. This means that we can help keep raw chicken safe and fresh without compromising its integrity or quality.
Not only did we find that these functional pads inactivated the harmful bacteria, but we also noted a related increase in lactic acid production, which plays a role in further protecting the meat. Our findings open up new avenues for using zinc in food packaging, offering a way to enhance food safety without directly adding chemicals to the food itself. Overall, this study highlights the potential for nanotechnology to play a significant role in managing foodborne pathogens like Campylobacter in poultry products.
Through our experiments, we discovered that immobilizing ZnO NPs in functional pads placed under raw chicken could dramatically reduce bacterial counts. In fact, we saw a reduction from about 4 log CFU to an undetectable level within just three days when storing chicken at 4°C. Notably, we monitored zinc levels in the chicken meat, confirming a safe release of zinc without any migration of nanoparticles onto the food. This means that we can help keep raw chicken safe and fresh without compromising its integrity or quality.
Not only did we find that these functional pads inactivated the harmful bacteria, but we also noted a related increase in lactic acid production, which plays a role in further protecting the meat. Our findings open up new avenues for using zinc in food packaging, offering a way to enhance food safety without directly adding chemicals to the food itself. Overall, this study highlights the potential for nanotechnology to play a significant role in managing foodborne pathogens like Campylobacter in poultry products.
0
Severe vomiting episode
Most Useful Review
1 people found this helpful
It's rather like a potent vitamin; however, I consumed it with light food, and it caused me to vomit repeatedly. I wouldn't recommend eating anything that might aggravate it. If you're concerned about this, I suggest requesting a lower concentration.
Updated: Apr 2025
Headache details
SCIENTIFIC SCORE
Possibly Effective
Based on 8 Researches
7.8
USERS' SCORE
Moderately Good
Based on 2 Reviews
7.2
9
We conducted a randomized, double-blind, placebo-controlled trial to explore how zinc gluconate affects migraine symptoms in women. Sixty participants, with an average age of 35, were given either 15 mg of zinc per day or a placebo for 12 weeks, allowing us to measure the impact on headache frequency, duration, and intensity.
The results were quite promising; zinc supplementation significantly reduced how often headaches occurred, shortened their duration, and decreased the severity of the migraines reported. Participants in the zinc group experienced notable improvements, as indicated by their responses to the headache severity scale and a disability assessment questionnaire.
Furthermore, we found that zinc also had a positive effect on certain health markers. The serum levels of low-density lipoprotein (LDL), total cholesterol, and high-sensitivity C-reactive protein (hs-CRP) decreased with zinc supplementation. However, we didn’t observe significant changes in triglycerides or high-density lipoprotein (HDL) levels after adjusting for baseline values.
In conclusion, zinc supplementation appears to hold beneficial effects on migraine severity and frequency, offering a potential alternative for those who seek relief from these debilitating headaches.
The results were quite promising; zinc supplementation significantly reduced how often headaches occurred, shortened their duration, and decreased the severity of the migraines reported. Participants in the zinc group experienced notable improvements, as indicated by their responses to the headache severity scale and a disability assessment questionnaire.
Furthermore, we found that zinc also had a positive effect on certain health markers. The serum levels of low-density lipoprotein (LDL), total cholesterol, and high-sensitivity C-reactive protein (hs-CRP) decreased with zinc supplementation. However, we didn’t observe significant changes in triglycerides or high-density lipoprotein (HDL) levels after adjusting for baseline values.
In conclusion, zinc supplementation appears to hold beneficial effects on migraine severity and frequency, offering a potential alternative for those who seek relief from these debilitating headaches.
2
Frequent headaches noticed
Most Useful Review
This company is one of the best for nutritional supplements available on iHerb, and this product has excellent specifications. However, I noticed that every time I took it, I experienced a headache, which led me to stop using it.
Updated: Apr 2025
Diarrhea details
SCIENTIFIC SCORE
Likely Very Effective
Based on 1 Research
9
USERS' SCORE
Moderately Good
Based on 3 Reviews
7.1
9
We explored how zinc oxide (ZnO), often used as a feed additive, affects diarrhea and gut health in piglets infected with the ETEC K88 strain. Through careful observation, we found that piglets suffering from this infection exhibited significantly increased fecal scores compared to those not affected. The ETEC K88 strain harms the small intestine, leading to a loss of villus height and a decrease in important antioxidant activities.
Our findings revealed that ZnO administration counteracts these negative effects effectively. It not only improved the overall health of the intestine but also enhanced its ability to combat oxidative stress. We also observed a balanced restoration of gut microbiota, as ZnO helped normalize the populations of certain beneficial bacteria altered by the infection.
In summary, our study indicates that ZnO can play a vital role in easing diarrhea in piglets infected with ETEC K88 by reducing intestinal damage, supporting antioxidative defenses, and restoring healthy gut flora.
Our findings revealed that ZnO administration counteracts these negative effects effectively. It not only improved the overall health of the intestine but also enhanced its ability to combat oxidative stress. We also observed a balanced restoration of gut microbiota, as ZnO helped normalize the populations of certain beneficial bacteria altered by the infection.
In summary, our study indicates that ZnO can play a vital role in easing diarrhea in piglets infected with ETEC K88 by reducing intestinal damage, supporting antioxidative defenses, and restoring healthy gut flora.
9
Supports recovery
Most Useful Review
Excellent! Zinc is a vital nutrient with various functions in the body, including its role in synthesising and breaking down carbohydrates, lipids, and proteins, defending against oxidative agents, aiding recovery from diarrhoea, and supporting growth. Therefore, supplementation is crucial. This version is absorbed better by the body. I highly recommend it.
Updated: Apr 2025
Dizziness details
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
USERS' SCORE
Medium or Average
Based on 4 Reviews
6.9
8
This study examined the effectiveness of a nutritional supplement containing zinc, among other ingredients, in preventing the recurrence of benign paroxysmal positional vertigo (BPPV), a condition that can cause intense dizziness. We followed a diverse group of 128 patients with a history of frequent BPPV episodes. They were divided into three groups based on their vitamin D levels and received different treatment plans.
In one group, those with low vitamin D received a daily supplement containing zinc, along with other antioxidants and vitamin D3. We noticed a remarkable decrease in BPPV relapses in this group after six months compared to where they started. However, for the groups that had sufficient vitamin D and particularly those receiving zinc without vitamin D, we did not find significant benefits in reducing dizziness recurrence.
While zinc was part of a combined treatment approach, it didn’t demonstrate a standalone positive impact on dizziness. Our findings suggest that while zinc might play a role alongside other supplements, it shouldn't be solely relied upon for preventing BPPV relapses in patients with sufficient vitamin D levels.
In one group, those with low vitamin D received a daily supplement containing zinc, along with other antioxidants and vitamin D3. We noticed a remarkable decrease in BPPV relapses in this group after six months compared to where they started. However, for the groups that had sufficient vitamin D and particularly those receiving zinc without vitamin D, we did not find significant benefits in reducing dizziness recurrence.
While zinc was part of a combined treatment approach, it didn’t demonstrate a standalone positive impact on dizziness. Our findings suggest that while zinc might play a role alongside other supplements, it shouldn't be solely relied upon for preventing BPPV relapses in patients with sufficient vitamin D levels.
2
Stomach discomfort
Most Useful Review
Generally, this nutritional supplement was unsuitable for me; I experienced stomach discomfort and dizziness after taking it, so I chose not to continue using it.
Updated: Apr 2025
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