Overview

SCIENTIFIC SCORE
Moderately Effective
Based on 3 Researches
8.3
USERS' SCORE
Good
Based on 163 Reviews
8.5
Supplement Facts
Serving Size:  1 Veg Capsule
Amount Per Serving
%DV
Zinc(from 170 mg L-OptiZinc® Monomethionine)
30 mg
273%
Copper(from 3 mg Copper Amino Acid Chelate)
0.3 mg
33%

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
Boosted mood
423 people found this helpful
Testosterone is vital! Zinc is known as the king of trace elements and is essential for health and beauty. It enhances testosterone in men and aids women's sugar metabolism, which can assist with weight reduction. I've noticed the effects after just a few days; my cold subsided, and I felt energised and in good spirits. My productivity has increased, allowing me to engage with friends more actively!
Read More
9
Rapid recovery
277 people found this helpful
Good Zinc! I found it particularly effective with a cold; it helped me recover quickly.
Read More
9
Family cold helper
45 people found this helpful
This zinc is fantastic for colds and is a staple in our family. I give my 13-year-old daughter two daily doses during colds, and it's been great!
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
Good
Based on 163 Reviews
8.5
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9
Boosted mood
423 people found this helpful
Testosterone is vital! Zinc is known as the king of trace elements and is essential for health and beauty. It enhances testosterone in men and aids women's sugar metabolism, which can assist with weight reduction. I've noticed the effects after just a few days; my cold subsided, and I felt energised and in good spirits. My productivity has increased, allowing me to engage with friends more actively!
Read More
9
Rapid recovery
277 people found this helpful
Good Zinc! I found it particularly effective with a cold; it helped me recover quickly.
Read More
9
Family cold helper
45 people found this helpful
This zinc is fantastic for colds and is a staple in our family. I give my 13-year-old daughter two daily doses during colds, and it's been great!
Read More
9
Prevents illness
33 people found this helpful
I take this zinc with my husband when we feel a cold coming on. It has worked remarkably, helping us both avoid becoming ill.
Read More
9
Impressive results
33 people found this helpful
This zinc proved excellent during colds for both my husband and me. Even my husband, who is sceptical about supplements, was amazed at how quickly it worked; we took it three times daily for five days.
Read More

Frequently Asked Questions

9
Boosted mood
423 people found this helpful
Testosterone is vital! Zinc is known as the king of trace elements and is essential for health and beauty. It enhances testosterone in men and aids women's sugar metabolism, which can assist with weight reduction. I've noticed the effects after just a few days; my cold subsided, and I felt energised and in good spirits. My productivity has increased, allowing me to engage with friends more actively!
9
Rapid recovery
277 people found this helpful
Good Zinc! I found it particularly effective with a cold; it helped me recover quickly.
9
Prevents illness
33 people found this helpful
I take this zinc with my husband when we feel a cold coming on. It has worked remarkably, helping us both avoid becoming ill.
9
Essential supplement
1 people found this helpful
I consume zinc and copper; I always have them at home for when I catch a cold—essential! It has greatly helped me with colds more than once. A must-have in every first-aid kit!
10
Symptoms vanish quickly
This super zinc for colds is incredible! After taking two capsules, my symptoms disappeared.
9
Impressive results
33 people found this helpful
This zinc proved excellent during colds for both my husband and me. Even my husband, who is sceptical about supplements, was amazed at how quickly it worked; we took it three times daily for five days.
9
Fights early colds
21 people found this helpful
I highly recommend this as an essential tool for boosting immunity. I take it throughout the year, finding it helpful against early signs of colds and ARVI. It works well paired with vitamin C, and after three days of taking these vitamins, I feel back on my feet! I've forgotten what pharmaceutical drugs are like. Super! I will certainly buy more!
10
Colds prevention
This is excellent for preventing colds! Since I started taking zinc, I've been able to avoid colds. When my family showed symptoms, they recovered without antibiotics by using zinc and vitamin C. I consistently take zinc now because I have witnessed its benefits; 30mg seems to be the right dosage!
10
Excellent immunity
I haven't caught a cold in years! Since supplementing with this alongside vitamin D and magnesium, my immunity has been excellent.
10
Prevents colds
I've heard zinc is beneficial for the throat mucosa, so I'm giving it a go. Thanks to this, I haven't caught a cold. I wish to continue using it.
9
Wards off infections
Best zinc for colds! Whenever a cold approaches, I take 120mg of this zinc with food, which almost always helps ward off infection.
10
Effective dosage
I started taking a larger dose a few days ago for my cold and now feel perfectly fine.
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
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