Last update
9/28/2025
Reviewed By
Reviewed By
Overview
SCIENTIFIC SCORE
Possibly Effective
Based on 6 Researches
7.5
USERS' SCORE
Good
Based on 19 Reviews
8
Supplement Facts
Serving Size: 1 Vegetarian Capsule
Amount Per Serving
%DV
Zinc (as OptiZinc® zinc monomethionine, zinc citrate)
50 mg
455%
Top Medical Research Studies
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.
Read More
9
We aimed to understand how dietary zinc intake influences the risk of developing osteopenia and osteoporosis in patients with rheumatoid arthritis (RA). Our study relied on data collected from the National Health and Nutrition Examination Survey, spanning several years. Through careful analysis using univariate and multivariate logistic regression models, we were able to uncover significant associations between dietary zinc levels and bone health in this population.
What we found was encouraging: higher zinc intake appeared to lower the chances of these serious bone conditions among RA patients. Our research also went further by examining various factors such as age, body mass index (BMI), and pre-existing health issues like diabetes and hypertension. This comprehensive approach led us to conclude that adequate dietary zinc is crucial for maintaining bone health in individuals with RA, though we noted the need for more extensive long-term studies to corroborate these findings and delve deeper into the underlying mechanisms at play.
What we found was encouraging: higher zinc intake appeared to lower the chances of these serious bone conditions among RA patients. Our research also went further by examining various factors such as age, body mass index (BMI), and pre-existing health issues like diabetes and hypertension. This comprehensive approach led us to conclude that adequate dietary zinc is crucial for maintaining bone health in individuals with RA, though we noted the need for more extensive long-term studies to corroborate these findings and delve deeper into the underlying mechanisms at play.
Read More
8
We identified an important link between zinc transport and autoimmune disorders, specifically focusing on the protein SLC39A10 and its role in T cells. Through our study, we discovered that two specific genetic variations in the SLC39A10 gene are associated with inflammatory bowel disease (IBD). To further explore this connection, we created genetically modified mice with a targeted deletion of the Slc39a10 gene in T cells.
Our findings revealed that the loss of SLC39A10 significantly protects against the progression of both IBD and experimental autoimmune encephalomyelitis (EAE). Notably, we also observed that the absence of this transporter led to increased cell death, independent of common pathways usually associated with apoptosis. This indicates that SLC39A10 plays a crucial role in maintaining the health of T cells by facilitating zinc import, which is essential for DNA replication when T cells are activated.
Our research contributes to a deeper understanding of how zinc homeostasis impacts immune function. The insights gained from this study suggest that targeting zinc transport could present new therapeutic options for managing T cell-related autoimmune diseases.
Our findings revealed that the loss of SLC39A10 significantly protects against the progression of both IBD and experimental autoimmune encephalomyelitis (EAE). Notably, we also observed that the absence of this transporter led to increased cell death, independent of common pathways usually associated with apoptosis. This indicates that SLC39A10 plays a crucial role in maintaining the health of T cells by facilitating zinc import, which is essential for DNA replication when T cells are activated.
Our research contributes to a deeper understanding of how zinc homeostasis impacts immune function. The insights gained from this study suggest that targeting zinc transport could present new therapeutic options for managing T cell-related autoimmune diseases.
Read More
Most Useful Reviews
9
Significant improvement
21 people found this helpful
Good things at affordable prices! My husband suffers from purpura caused by an autoimmune disorder. After trying multiple treatments, including high-unit vitamin B and internal medicine, there was little effect. However, after adding R-lipoic acid and zinc, his skin condition remarkably improved within two months. No more itching or dryness, and his skin has returned to a normal state, allowing him to live without hindrance. Thank you, iHerb and Life Extension, for such effective products!
Read More
8
Overall health support
2 people found this helpful
We consistently order this zinc; it’s the best I've found. Zinc supports our immune system, heals wounds, and helps regulate overall body function, including skeletal, neurological, and endocrine systems. It's crucial for protecting against oxidative stress and supports healthy ageing.
Read More
9
Rapid recovery
1 people found this helpful
I order zinc regularly from this high-quality brand. This supplement is vital for supporting my immune system. At the first signs of illness, I take it twice daily, along with other vitamins and plenty of fluids. Our children recover in just a few days thanks to this routine.
Read More
Medical Researches
SCIENTIFIC SCORE
Possibly Effective
Based on 6 Researches
7.5
- All Researches
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.
Read More
9
We aimed to understand how dietary zinc intake influences the risk of developing osteopenia and osteoporosis in patients with rheumatoid arthritis (RA). Our study relied on data collected from the National Health and Nutrition Examination Survey, spanning several years. Through careful analysis using univariate and multivariate logistic regression models, we were able to uncover significant associations between dietary zinc levels and bone health in this population.
What we found was encouraging: higher zinc intake appeared to lower the chances of these serious bone conditions among RA patients. Our research also went further by examining various factors such as age, body mass index (BMI), and pre-existing health issues like diabetes and hypertension. This comprehensive approach led us to conclude that adequate dietary zinc is crucial for maintaining bone health in individuals with RA, though we noted the need for more extensive long-term studies to corroborate these findings and delve deeper into the underlying mechanisms at play.
What we found was encouraging: higher zinc intake appeared to lower the chances of these serious bone conditions among RA patients. Our research also went further by examining various factors such as age, body mass index (BMI), and pre-existing health issues like diabetes and hypertension. This comprehensive approach led us to conclude that adequate dietary zinc is crucial for maintaining bone health in individuals with RA, though we noted the need for more extensive long-term studies to corroborate these findings and delve deeper into the underlying mechanisms at play.
Read More
8
We identified an important link between zinc transport and autoimmune disorders, specifically focusing on the protein SLC39A10 and its role in T cells. Through our study, we discovered that two specific genetic variations in the SLC39A10 gene are associated with inflammatory bowel disease (IBD). To further explore this connection, we created genetically modified mice with a targeted deletion of the Slc39a10 gene in T cells.
Our findings revealed that the loss of SLC39A10 significantly protects against the progression of both IBD and experimental autoimmune encephalomyelitis (EAE). Notably, we also observed that the absence of this transporter led to increased cell death, independent of common pathways usually associated with apoptosis. This indicates that SLC39A10 plays a crucial role in maintaining the health of T cells by facilitating zinc import, which is essential for DNA replication when T cells are activated.
Our research contributes to a deeper understanding of how zinc homeostasis impacts immune function. The insights gained from this study suggest that targeting zinc transport could present new therapeutic options for managing T cell-related autoimmune diseases.
Our findings revealed that the loss of SLC39A10 significantly protects against the progression of both IBD and experimental autoimmune encephalomyelitis (EAE). Notably, we also observed that the absence of this transporter led to increased cell death, independent of common pathways usually associated with apoptosis. This indicates that SLC39A10 plays a crucial role in maintaining the health of T cells by facilitating zinc import, which is essential for DNA replication when T cells are activated.
Our research contributes to a deeper understanding of how zinc homeostasis impacts immune function. The insights gained from this study suggest that targeting zinc transport could present new therapeutic options for managing T cell-related autoimmune diseases.
Read More
8
We analyzed how zinc levels in the body relate to alopecia areata (AA), an autoimmune disorder that affects hair loss. Our research involved a systematic review of 34 studies, gathering data from nearly 5,000 participants across 16 countries. By examining various studies, we sought to understand if zinc supplementation could be beneficial for those suffering from AA.
The results were striking. We found that individuals with alopecia areata had significantly lower levels of zinc and vitamin D compared to healthy individuals. Specifically, the data indicated that those with vitamin D deficiency faced a heightened risk of developing AA. This suggests that replenishing these nutrients might help manage the disease.
Importantly, we didn't find a significant difference in copper levels between AA patients and healthy controls, indicating that not all trace elements play the same role in this condition. Overall, our findings highlight the potential of zinc and vitamin D as targeted treatments for alopecia areata, offering new hope for those affected by this condition.
The results were striking. We found that individuals with alopecia areata had significantly lower levels of zinc and vitamin D compared to healthy individuals. Specifically, the data indicated that those with vitamin D deficiency faced a heightened risk of developing AA. This suggests that replenishing these nutrients might help manage the disease.
Importantly, we didn't find a significant difference in copper levels between AA patients and healthy controls, indicating that not all trace elements play the same role in this condition. Overall, our findings highlight the potential of zinc and vitamin D as targeted treatments for alopecia areata, offering new hope for those affected by this condition.
Read More
7
We aimed to explore how zinc supplementation might influence immune responses, particularly focusing on neutrophil activity in the context of autoimmune diseases. To do this, we simulated inflammatory conditions typically seen in such disorders using specific cytokines, interleukin-17 (IL-17) and tumor necrosis factor (TNF)-α.
Our findings indicated that elevating zinc levels significantly reduced the formation of neutrophil extracellular traps (NETs), which are often implicated in tissue damage during autoimmune flare-ups. We also discovered that zinc supplementation lowered the expression of a protein called peptidyl arginine deiminase 4 (PAD4), which is associated with NET formation.
Interestingly, zinc not only decreased harmful neutrophil activity but also boosted the production of beneficial proteins like interleukin-1 receptor antagonist (IL-1RA) and IL-8 in the activated cells. Overall, maintaining adequate zinc levels seems crucial for preserving healthy immune function and preventing the harmful overactivity of neutrophils, suggesting its potential as an adjunct treatment in managing autoimmune conditions.
Our findings indicated that elevating zinc levels significantly reduced the formation of neutrophil extracellular traps (NETs), which are often implicated in tissue damage during autoimmune flare-ups. We also discovered that zinc supplementation lowered the expression of a protein called peptidyl arginine deiminase 4 (PAD4), which is associated with NET formation.
Interestingly, zinc not only decreased harmful neutrophil activity but also boosted the production of beneficial proteins like interleukin-1 receptor antagonist (IL-1RA) and IL-8 in the activated cells. Overall, maintaining adequate zinc levels seems crucial for preserving healthy immune function and preventing the harmful overactivity of neutrophils, suggesting its potential as an adjunct treatment in managing autoimmune conditions.
Read More
User Reviews
USERS' SCORE
Good
Based on 19 Reviews
8
- All Reviews
- Positive Reviews
- Negative Reviews
9
Significant improvement
21 people found this helpful
Good things at affordable prices! My husband suffers from purpura caused by an autoimmune disorder. After trying multiple treatments, including high-unit vitamin B and internal medicine, there was little effect. However, after adding R-lipoic acid and zinc, his skin condition remarkably improved within two months. No more itching or dryness, and his skin has returned to a normal state, allowing him to live without hindrance. Thank you, iHerb and Life Extension, for such effective products!
Read More
8
Overall health support
2 people found this helpful
We consistently order this zinc; it’s the best I've found. Zinc supports our immune system, heals wounds, and helps regulate overall body function, including skeletal, neurological, and endocrine systems. It's crucial for protecting against oxidative stress and supports healthy ageing.
Read More
9
Rapid recovery
1 people found this helpful
I order zinc regularly from this high-quality brand. This supplement is vital for supporting my immune system. At the first signs of illness, I take it twice daily, along with other vitamins and plenty of fluids. Our children recover in just a few days thanks to this routine.
Read More
9
Early effects unclear
1 people found this helpful
I found this brand a year ago, using many of their vitamins, especially D. I ordered zinc to support my body during the cold season. So far, no allergic reactions, but it's too soon to judge its effects on my autoimmune disorder.
Read More
9
Miraculous recovery
1 people found this helpful
I ordered zinc as a precaution against seasonal illnesses. Unfortunately, I fell ill just before my order arrived. After taking two capsules, both my son and I recovered remarkably quickly. I shared this experience with my colleagues, and it felt miraculous for our autoimmune disorders.
Read More
Frequently Asked Questions
9
Significant improvement
21 people found this helpful
Good things at affordable prices! My husband suffers from purpura caused by an autoimmune disorder. After trying multiple treatments, including high-unit vitamin B and internal medicine, there was little effect. However, after adding R-lipoic acid and zinc, his skin condition remarkably improved within two months. No more itching or dryness, and his skin has returned to a normal state, allowing him to live without hindrance. Thank you, iHerb and Life Extension, for such effective products!
6
Taste restored
1 people found this helpful
After a recent illness, my senses of taste and smell were severely affected. I read that zinc could help restore them. I ordered a 50 mg dose and initially felt nauseous, but its benefits for my autoimmune disorder were evident as my senses began to come back.
6
Well absorbed
This brand of zinc is effective and well absorbed. I've learned that zinc deficiency can lead to multiple issues, and its positive effects on my autoimmune disorder have been significant, especially in conjunction with magnesium and copper supplementation.
8
Strengthened nails
3 people found this helpful
I ordered this supplement to support my family’s health, especially to help combat an autoimmune disorder. We take one capsule every other day after meals, and none of us experienced side effects. I noticed that my daughter's and my nails have become significantly stronger, thanks to the zinc.
8
Hair growth improved
I took zinc to boost hair growth alongside biotin. Within a month, my hair grew nearly 4 cm, with many new hairs sprouting. I noticed improvements even after losing my sense of smell due to my autoimmune disorder; zinc helped me recover gradually. Highly recommended!
7.5
Autoimmune support
2 people found this helpful
A highly effective drug for treating autoimmune skin diseases like psoriasis and eczema. I take it in cycles twice a year and have seen notable improvements. It strengthens my immune system and helps support my vision and thyroid function. However, it's vital to take copper supplements alongside it, as zinc can deplete copper levels.
8
Effective immunity booster
3 people found this helpful
An effective drug at a reasonable price. This is not my first order; we take it to maintain our immunity. I consume three capsules weekly after meals to avoid nausea. Along with omega and vitamins A, C, and D, I feel healthier overall.
8
We identified an important link between zinc transport and autoimmune disorders, specifically focusing on the protein SLC39A10 and its role in T cells. Through our study, we discovered that two specific genetic variations in the SLC39A10 gene are associated with inflammatory bowel disease (IBD). To further explore this connection, we created genetically modified mice with a targeted deletion of the Slc39a10 gene in T cells.
Our findings revealed that the loss of SLC39A10 significantly protects against the progression of both IBD and experimental autoimmune encephalomyelitis (EAE). Notably, we also observed that the absence of this transporter led to increased cell death, independent of common pathways usually associated with apoptosis. This indicates that SLC39A10 plays a crucial role in maintaining the health of T cells by facilitating zinc import, which is essential for DNA replication when T cells are activated.
Our research contributes to a deeper understanding of how zinc homeostasis impacts immune function. The insights gained from this study suggest that targeting zinc transport could present new therapeutic options for managing T cell-related autoimmune diseases.
Our findings revealed that the loss of SLC39A10 significantly protects against the progression of both IBD and experimental autoimmune encephalomyelitis (EAE). Notably, we also observed that the absence of this transporter led to increased cell death, independent of common pathways usually associated with apoptosis. This indicates that SLC39A10 plays a crucial role in maintaining the health of T cells by facilitating zinc import, which is essential for DNA replication when T cells are activated.
Our research contributes to a deeper understanding of how zinc homeostasis impacts immune function. The insights gained from this study suggest that targeting zinc transport could present new therapeutic options for managing T cell-related autoimmune diseases.
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.
9
We aimed to understand how dietary zinc intake influences the risk of developing osteopenia and osteoporosis in patients with rheumatoid arthritis (RA). Our study relied on data collected from the National Health and Nutrition Examination Survey, spanning several years. Through careful analysis using univariate and multivariate logistic regression models, we were able to uncover significant associations between dietary zinc levels and bone health in this population.
What we found was encouraging: higher zinc intake appeared to lower the chances of these serious bone conditions among RA patients. Our research also went further by examining various factors such as age, body mass index (BMI), and pre-existing health issues like diabetes and hypertension. This comprehensive approach led us to conclude that adequate dietary zinc is crucial for maintaining bone health in individuals with RA, though we noted the need for more extensive long-term studies to corroborate these findings and delve deeper into the underlying mechanisms at play.
What we found was encouraging: higher zinc intake appeared to lower the chances of these serious bone conditions among RA patients. Our research also went further by examining various factors such as age, body mass index (BMI), and pre-existing health issues like diabetes and hypertension. This comprehensive approach led us to conclude that adequate dietary zinc is crucial for maintaining bone health in individuals with RA, though we noted the need for more extensive long-term studies to corroborate these findings and delve deeper into the underlying mechanisms at play.
4
We examined the connection between dietary zinc intake and the risk of autoimmune thyroiditis (AIT), particularly focusing on Hashimoto's thyroiditis. The study analyzed data from the 2007-2008 National Health and Nutrition Examination Survey, including nearly 5,500 participants—273 with AIT and 5,194 without it.
Our findings revealed that higher dietary zinc intake is associated with an increased risk of AIT, acting as an independent risk factor. This is concerning, as excessive zinc could disrupt our immune balance, potentially leading to other autoimmune disorders.
While it’s clear that zinc plays a role in thyroid health, we must be cautious about how much we consume. The study suggests that dietary zinc should be carefully monitored in those at risk for AIT, and it highlights the need for further research to establish safe consumption levels.
Our findings revealed that higher dietary zinc intake is associated with an increased risk of AIT, acting as an independent risk factor. This is concerning, as excessive zinc could disrupt our immune balance, potentially leading to other autoimmune disorders.
While it’s clear that zinc plays a role in thyroid health, we must be cautious about how much we consume. The study suggests that dietary zinc should be carefully monitored in those at risk for AIT, and it highlights the need for further research to establish safe consumption levels.
References
- Shao Y, Mu Q, Wang R, Luo H, Song Z, et al. SLC39A10 is a key zinc transporter in T cells and its loss mitigates autoimmune disease. Sci China Life Sci. 2025. 10.1007/s11427-024-2817-y
- Chen L, Yan C, Huang C, Jiang Z, Lin R, et al. Higher dietary zinc intake increases the risk of autoimmune thyroiditis. Postgrad Med J. 2025. 10.1093/postmj/qgae202
- Wu R, Li Y, Peng H, Yang Z, Wang Y, et al. Association Between Serum Trace Elements Level and Alopecia Areata: A Systematic Review and Meta-Analysis. J Cosmet Dermatol. 2025;24:e16740. 10.1111/jocd.16740
- Bayiroglu AF, Acar G, Gulbahce-Mutlu E, Baltaci SB, Mogulkoc R, et al. Dietary zinc status is associated with ZnT3 (SLC30A3), IL-6 gene expressions and spinal cord tissue damage in spinal cord tissue in a cuprizone-induced rat Multiple Sclerosis model. J Trace Elem Med Biol. 2024;86:127540. 10.1016/j.jtemb.2024.127540
- Fang D, Jiang D, Shi G, Song Y. The association between dietary zinc intake and osteopenia, osteoporosis in patients with rheumatoid arthritis. BMC Musculoskelet Disord. 2024;25:710. 10.1186/s12891-024-07768-5
- Cheng J, Rink L, Wessels I. Zinc Supplementation Reduces the Formation of Neutrophil Extracellular Traps by Decreasing the Expression of Peptidyl Arginine Deiminase 4. Mol Nutr Food Res. 2024;68:e2400013. 10.1002/mnfr.202400013
