Source Naturals

Source Naturals OptiZinc Zinc Methionine Sulfate Complex Dietary Supplement - 240 Tablets

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$20.65

About this item

  • ZINC MONOMETHIONINE BENEFITS. Source Naturals OptiZinc is zinc monomethionine, a patented combination of zinc and the essential amino acid methionine. Research shows this formulation makes zinc more absorbable than other zinc compounds and therefore more readily available for the body’s needs
  • Suggested Use: 1 tablet daily with a meal.
  • Well Made Supplement: Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no starch, preservatives, or artificial color, flavor or fragrance.
  • Over 40 Years of Trust. Source Naturals was created in 1982 by CEO Ira Goldberg to support everyone’s potential to enjoy optimal health.
  • Manufactured in the USA. Manufactured in Scotts Valley, CA, under the Good Manufacturing Practices (cGMPs) established by the US Food and Drug Administration (FDA).
$20.65

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Product details

BrandSource Naturals
Item FormTablet
Primary Supplement TypeZinc
Unit Count240.0 Count
FlavorUnflavored

Technical specifications

is_discontinued_by_manufacturerNo
product_dimensions2 x 2.1 x 3.3 inches; 4 ounces
item_model_numberSN0176
departmentHealth and Beauty>Health and Wellness
date_first_availableApril 8, 2004
manufacturerThreshold Enterprises
best_sellers_rank#15,984 in Health & Household ( See Top 100 in Health & Household ) #64 in Zinc Mineral Supplements #1,843 in Sales & Deals

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Customer reviews

4.82,255 ratings

Customers say

Customers find this zinc supplement effective for skin health, particularly for hormonal acne and inflammation, and appreciate its excellent methionine chelated zinc content. The supplement is easy to swallow, comes in a small size, and offers good value for money. While some customers report it doesn't upset their stomach at all, others experience nausea. The taste receives mixed reactions, with several customers de

★★★★★

Great supplement

DayshaOctober 1, 2025

This zinc is the best! I ordered months ago and have repurchased. The quality of the vitamin is very good and I feel it has made such a difference. Sometimes vitamins I take don’t do anything and I really think this has helped with my oil production, acne and just overall health. Would recommend!! Read more

★★★★★

Contains 30mg (200%DV) of zinc plus 300mcg (15%DV) of copper in each tablet

Ronald M. ChavinAugust 27, 2012

Usually low in cadmium, zinc monomethionine is better absorbed and better utilized by the human body compared to all other forms of zinc including zinc picolinate (excellent absorption), zinc citrate (good absorption), zinc acetate (good absorption), zinc gluconate (good absorption, always lowest in cadmium, and gentle on the stomach), zinc carbonate, zinc oxide, and zinc sulfate (can cause stomach irritation). Both ascorbic acid (vitamin C) and methionine (monomethionine) help the human body get rid of cadmium, which on average is 20 times more plentiful in one multi-mineral tablet than one zinc tablet. [I suspect that dolomite (calcium magnesium carbonate), which is in your kid's rock collection and was once used in most multi-mineral and multi-vitamin pills, is very high in cadmium. Calcium carbonate appears to be OK with respect to cadmium. Japanese natto, which is very high in vitamin K2/MK-7, vitamin K2/MK-8, nattokinase, soy isoflavones, soy saponins, vitamin PQQ, and vitamin C, is also low in cadmium and very high in every mineral listed on your multi-mineral supplement. Wheat germ and shiitake mushrooms are both low in calcium but very rich in all other beneficial minerals]. The food in the typical daily American diet contains about 15 times the amount of cadmium contained in the average zinc tablet. Smokers inhale large amounts of cadmium. Also, chocolate, seaweed, and sea salt are high in cadmium. If taken within 24 hours of the onset of symptoms, zinc reduces the duration and severity of the common cold. Zinc is found in high concentrations in the retina and the amount declines with age so zinc supplementation may help reduce the risk of age-related macular degeneration. Zinc also helps heal acne and cold sores, improves overall immunity, and is used to treat people with an impaired ability to taste. Some people believe that together with selenium and vitamin C, zinc might help the human body to slightly more rapidly detoxify itself of mercury, lead, arsenic, and other unwanted metals. Other people believe that men, but not women, drain themselves of zinc regularly and need to replenish their supply. It's difficult to get even half of the Recommended Daily Value of zinc from eating all foods that are considered moderately high in zinc. However, oysters are an extremely, extremely rich source of zinc, containing much, much more zinc than one OptiZinc tablet. No other food contains anywhere near as much zinc as one OptiZinc tablet. Because they never have sand inclusions, small oysters are worth much more per pound (but not priced any higher) than large oysters, which frequently have sand inclusions. Swallowing more than one OptiZinc tablet per day could cause a severe copper deficiency. OptiZinc tablets were made to be swallowed, not chewed. If you accidentally chew an OptiZinc tablet, you will very likely experience an unpleasant, metallic taste in your mouth which won't go away for several hours. People who swallow zinc tablets to minimize the damage from viruses (common cold, influenza, pneumonia, HIV, HPV, herpes, shingles, hepatitis, meningitis, Epstein-Barr, dengue fever, malaria, etc.) and/or bacteria (gum disease, diarrhea, wounds, etc.) can greatly improve their results by also swallowing at least 2,000 IU of vitamin D3 daily, by drinking olive leaf tea, and by eating shiitake mushrooms. Some people also use fucoidan capsules, Korean red ginseng capsules, and/or benfotiamine capsules to improve their immune defenses. Read more

★★★★★

Taking for Acne

JTOMMay 13, 2023

I hope I don’t jinx myself. I started taking these about 3 weeks ago to try and help with acne. I’ve always had “struggled” with acne but about 6 months ago I started getting 3-6 cysts at a time around my mouth and neck area. I was popping approx 6-8 zits a day. My acne had gotten to the point to where not only was it affecting me mentally it was affecting my every day life physically. It would hurt to talk, smile, move my head, wear a scarf, put a blanket up up to my neck etc. Well I’ve been taking these for barely over 3 weeks now and my acne has calmed down. I’ve only had 1 cyst in 3 weeks. I’ve had little breakouts but NOTHING like what I was dealing with before. It’s also only been 3 weeks. When I wash my face at night there’s not 4-8 flared up zits. My skin looks calm after washing now and I just really have like “post acne inflammation” where I have some leftover red spots from previous zits but they have calmed down significantly. They also cover fairly well with makeup. My skin also looks smooth and feels smooth rather than me being able to feel bumps. The zinc was recommended to me to take by my aesthetician that I’m working with since March but I put off taking it because I hate taking pills. Now I wish I would’ve just started taking the second it was offered to me. My acne was affecting me so much that I was on my way to take accutane. I had the appointment set with my dermatologist and already had the pregnancy test done and had my primary care sign off on me to take it. My next step was to do my follow up with dermatologist and get my blood work done to get the prescription. My skin had improved so much within these 3 weeks that I canceled my accutane appointment. Knock on wood but I finally see a light at the end of the tunnel. At this moment, I’m no longer in pain. I can smile, sleep with my face touching the bed, etc etc with no pain. I am hoping to provide an update in about 1-2 months. For reference I’m 5’4” approx 140lbs. I started taking 1 tablet every day for a week. Then I started taking 1 in the morning and at night and this is what I will continue to do until everything calms down. Then I’ll return to taking once a day and then probably every other day etc. I also started taking fish oil approx 2 months ago and a probiotic approx 4 weeks ago. I’ve taken the zinc on empty stomach and have never experienced any side effects from it. I will say, the tablets do kind of smell. I try to hold my breath when taking it because they taste bad lol (but it’s not overwhelmingly bad by any means) Read more

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★★★★★

Omg!!

YessiOctober 12, 2025

You guys I hardly ever give products reviews but let me tell y’all, this supplement was recommended by my esthetician I had server inflamed adult acne ,cystic, redness just a total pain. I did not immediately take these since I had forgotten about purchasing these. My skin journey has been a long one but I can honestly say as soon I remembered and purchased these I kid you not these helped tremendously on speeding up the process with my SKIN! Health! I recommend 100 percent & they are beneficial for you in other ways as well. Please purchase. I will say I can not tolerate these on an empty stomach I’ll get nauseous so take with a little snack or something. Read more

★★★★☆

Plenty of zinc

Boss RossFebruary 21, 2023

This is an essential mineral. And this is a good brand Source Naturals. Make sure to get plenty of zinc in your diet as it is essential for good health and Longevity. Known to boost immunity good to have around in the winter. All year long really. I expect this bottle will last me for a couple of months as there is plenty in the bottle and the amount is good also. Definitely a good value for the money. From a good company Source Naturals. Read more

★★★★★

Buy real things.

LutfurAmanOctober 23, 2025

OptiZinc is the best. I always buy same brand. Read more

★★★★★

Acne help

Taylir AragonSeptember 30, 2025

Purchased to help with adult acne. This helps so much with acne plus when I feel like getting sick. Great quality. Read more

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