Overview

SCIENTIFIC SCORE
Moderately Effective
Based on 3 Researches
8.3
USERS' SCORE
Moderately Good
Based on 116 Reviews
7.9
Supplement Facts
Serving Size: 1 Caplet
Amount Per Serving
%DV
Zinc (as Zinc Gluconate)
50 mg
455%

Top Medical Research Studies

8
Zinc’s effects on colds
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.
Read More
9
Zinc enhances rice cold resistance
We explored the impact of zinc-amino acids chelate on cold stress resistance in machine-transplanted early rice. Our investigation included other cold-resistant agents like uniconazole and abscisic acid, but we found zinc to be particularly effective. When applied during the regreening stage, zinc notably enhanced rice growth by promoting tillering and increasing the leaf area, which led to better yields.

We noted that zinc-amino acids chelate improved antioxidant enzyme activities, which are crucial for helping rice withstand cold temperatures. The yield of rice treated with zinc was approximately 9.22% higher than with uniconazole and 7.14% higher than with abscisic acid.

Additionally, we observed that using 750 g/ha of zinc-amino acids chelate during the transplanting and regreening stages yielded the best results. The timing of the application played a critical role, as spraying during these specific phases maximized both yield and cold resistance.

Overall, zinc treatments stand out as a promising option for improving cold stress resilience in early rice, making it a key consideration for farmers dealing with cold climate conditions.
Read More
We explored the impact of regular gargling with an antimicrobial mouthwash that contains both cetylpyridinium chloride and zinc on upper respiratory symptoms. A total of 150 participants were split into two groups; one group just brushed their teeth, while the other group brushed and gargled with the mouthwash twice a day over three months.

Our findings revealed that those using the mouthwash experienced a 21.5% reduction in the frequency and an 11% decrease in the severity of respiratory symptoms. This strongly suggests that incorporating zinc, alongside cetylpyridinium chloride, can provide benefits for those suffering from cold-related symptoms.

However, it’s important to note that this study’s design involved multiple components, and we can’t isolate zinc’s effectiveness from the impact of the other ingredients. Still, the results encourage us to view mouthwash with these ingredients as a helpful addition to our daily hygiene routines, especially during cold and flu season.

Ultimately, this research indicates that gargling with a mouthwash containing zinc and cetylpyridinium chloride can indeed help alleviate some unpleasant cold symptoms, but we should be mindful of the combination's effects when interpreting these outcomes.
Read More

Most Useful Reviews

9
Prevention of colds
9 people found this helpful
I take it with vitamin C as recommended by my doctor during an epidemic for prevention and at the first sign of a cold. It helps from the first day of taking the capsules. I always keep this medication in my home medicine cabinet and highly recommend it to everyone!
Read More
7.5
Supports during colds
5 people found this helpful
Zinc in gluconate form is highly absorbed. At 50 mg, it's excellent for addressing deficiencies during colds. It aids with olfactory and taste issues, memory impairment, and more. I primarily purchased this to support my health during colds. I’ve even noted improved tone, smell, and memory in pets too!
Read More
9
Faster recovery
3 people found this helpful
I've loved this zinc for years; I clearly felt the effect, especially with a cold. It clears up faster and I feel better almost immediately.
Read More

Medical Researches

SCIENTIFIC SCORE
Moderately Effective
Based on 3 Researches
8.3
  • All Researches
9
Zinc enhances rice cold resistance
We explored the impact of zinc-amino acids chelate on cold stress resistance in machine-transplanted early rice. Our investigation included other cold-resistant agents like uniconazole and abscisic acid, but we found zinc to be particularly effective. When applied during the regreening stage, zinc notably enhanced rice growth by promoting tillering and increasing the leaf area, which led to better yields.

We noted that zinc-amino acids chelate improved antioxidant enzyme activities, which are crucial for helping rice withstand cold temperatures. The yield of rice treated with zinc was approximately 9.22% higher than with uniconazole and 7.14% higher than with abscisic acid.

Additionally, we observed that using 750 g/ha of zinc-amino acids chelate during the transplanting and regreening stages yielded the best results. The timing of the application played a critical role, as spraying during these specific phases maximized both yield and cold resistance.

Overall, zinc treatments stand out as a promising option for improving cold stress resilience in early rice, making it a key consideration for farmers dealing with cold climate conditions.
Read More
We explored the impact of regular gargling with an antimicrobial mouthwash that contains both cetylpyridinium chloride and zinc on upper respiratory symptoms. A total of 150 participants were split into two groups; one group just brushed their teeth, while the other group brushed and gargled with the mouthwash twice a day over three months.

Our findings revealed that those using the mouthwash experienced a 21.5% reduction in the frequency and an 11% decrease in the severity of respiratory symptoms. This strongly suggests that incorporating zinc, alongside cetylpyridinium chloride, can provide benefits for those suffering from cold-related symptoms.

However, it’s important to note that this study’s design involved multiple components, and we can’t isolate zinc’s effectiveness from the impact of the other ingredients. Still, the results encourage us to view mouthwash with these ingredients as a helpful addition to our daily hygiene routines, especially during cold and flu season.

Ultimately, this research indicates that gargling with a mouthwash containing zinc and cetylpyridinium chloride can indeed help alleviate some unpleasant cold symptoms, but we should be mindful of the combination's effects when interpreting these outcomes.
Read More
8
Zinc’s effects on colds
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.
Read More

User Reviews

USERS' SCORE
Moderately Good
Based on 116 Reviews
7.9
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9
Prevention of colds
9 people found this helpful
I take it with vitamin C as recommended by my doctor during an epidemic for prevention and at the first sign of a cold. It helps from the first day of taking the capsules. I always keep this medication in my home medicine cabinet and highly recommend it to everyone!
Read More
7.5
Supports during colds
5 people found this helpful
Zinc in gluconate form is highly absorbed. At 50 mg, it's excellent for addressing deficiencies during colds. It aids with olfactory and taste issues, memory impairment, and more. I primarily purchased this to support my health during colds. I’ve even noted improved tone, smell, and memory in pets too!
Read More
9
Faster recovery
3 people found this helpful
I've loved this zinc for years; I clearly felt the effect, especially with a cold. It clears up faster and I feel better almost immediately.
Read More
10
Stops colds
2 people found this helpful
There's no flavour, but it effectively halts the seasonal cold. From September to March, I give my family Zinc and Vitamin C, which has saved me from severe head colds that would descend into my chest. Using this combination, I no longer catch colds and take just one capsule daily of both. I don’t get the flu either, as I rely on natural immunity. I don't take the flu shot, as it once left me ill for weeks. Now, I enjoy no colds, no flu, and thankfully no Covid thus far.
Read More
9
Helps avoid colds
2 people found this helpful
Since I started taking Nature's Bounty zinc, colds and viruses rarely affect me. I experience quick healing when I do get ill, and my skin remains clear. The positive effects on my appearance suggest internal health improvements. I recommend this for its efficacy and affordability while also emphasising moderation in use.
Read More

Frequently Asked Questions

9
Faster recovery
3 people found this helpful
I've loved this zinc for years; I clearly felt the effect, especially with a cold. It clears up faster and I feel better almost immediately.
9
Immediate effect
Zinc is always in my first aid kit. At the first sign of a cold, I take zinc, and after two days, everything resolves.
9
Helps avoid colds
2 people found this helpful
Since I started taking Nature's Bounty zinc, colds and viruses rarely affect me. I experience quick healing when I do get ill, and my skin remains clear. The positive effects on my appearance suggest internal health improvements. I recommend this for its efficacy and affordability while also emphasising moderation in use.
9
Increases resistance
1 people found this helpful
Due to the COVID-19 pandemic, a pharmacy friend suggested supplementing with zinc to bolster my resistance. After taking one bottle, I haven't experienced a cold.
9
Prevention of colds
9 people found this helpful
I take it with vitamin C as recommended by my doctor during an epidemic for prevention and at the first sign of a cold. It helps from the first day of taking the capsules. I always keep this medication in my home medicine cabinet and highly recommend it to everyone!
9
Good protection against colds
I take it alongside vitamin C and vitamin D. It provides excellent protection against colds.
9
Highly effective zinc
I truly appreciated this zinc in a large therapeutic dosage. It’s a lifesaver at the first sign of a cold, especially when paired with vitamin C—it’s absolutely excellent!
7.5
Better during colds
2 people found this helpful
I chose these zinc tablets for their high dosage. I believe it is more effective during colds. The tablets can be split, and I take them in the evening after dinner with magnesium. Good vitamins!
7.5
Supports during colds
5 people found this helpful
Zinc in gluconate form is highly absorbed. At 50 mg, it's excellent for addressing deficiencies during colds. It aids with olfactory and taste issues, memory impairment, and more. I primarily purchased this to support my health during colds. I’ve even noted improved tone, smell, and memory in pets too!
7.5
Prevents cold symptoms
Keeps my husband and I well; it helps prevent us from getting colds, bronchitis, etc. When we feel something coming on, we double our daily dose and can usually stop our cold from worsening.
9
Effective dosage noted
Health begins with immunity, which is why my entire family takes zinc in spring and autumn. A dosage of 50 mg replenishes deficiencies and is noticeably effective in preventing seasonal colds.
We explored the impact of regular gargling with an antimicrobial mouthwash that contains both cetylpyridinium chloride and zinc on upper respiratory symptoms. A total of 150 participants were split into two groups; one group just brushed their teeth, while the other group brushed and gargled with the mouthwash twice a day over three months.

Our findings revealed that those using the mouthwash experienced a 21.5% reduction in the frequency and an 11% decrease in the severity of respiratory symptoms. This strongly suggests that incorporating zinc, alongside cetylpyridinium chloride, can provide benefits for those suffering from cold-related symptoms.

However, it’s important to note that this study’s design involved multiple components, and we can’t isolate zinc’s effectiveness from the impact of the other ingredients. Still, the results encourage us to view mouthwash with these ingredients as a helpful addition to our daily hygiene routines, especially during cold and flu season.

Ultimately, this research indicates that gargling with a mouthwash containing zinc and cetylpyridinium chloride can indeed help alleviate some unpleasant cold symptoms, but we should be mindful of the combination's effects when interpreting these outcomes.
8
Zinc’s effects on colds
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.

References

  1. Muniz FWMG, Casarin M, Pola NM, Rösing CK, Silveira TMD, et al. Efficacy of regular gargling with a cetylpyridinium chloride plus zinc containing mouthwash can reduce upper respiratory symptoms. PLoS One. 2025;20:e0316807. doi:10.1371/journal.pone.0316807
  2. Wieland LS. Zinc for prevention and treatment of the common cold: Summary of a Cochrane review. Explore (NY). 2025;21:103111. doi:10.1016/j.explore.2025.103111
  3. Yuan S, Qin S, Shi Q, Chen P, Tu N, et al. Effects of different cold-resistant agents and application methods on yield and cold-resistance of machine-transplanted early rice. Front Plant Sci. 2024;15:1422374. doi:10.3389/fpls.2024.1422374
image