Douglas Laboratories Opti Zinc 30 mg. | Zinc Monomethionine Supports Immune Function and Healthy Skin | 90 Capsules
$18.60








Price: $18.60
(as of Sep 30, 2025 21:31:53 UTC – Details)
Product description
Opti-Zinc vegetarian capsules supply elemental zinc monomethionine, a chemically defined, patented organic compound which provides zinc and the amino acid methionine in a 1:1 ratio.


For 60 years, Douglas Laboratories has been dedicated to ensuring that the products we deliver are the highest quality available.

Douglas Laboratories manufactures nutritional supplements for long-term health and active lifestyles.*

Over the past 60 years, Douglas Laboratories has grown into a globally recognized leader in the development of science-based nutritional supplements.

Vitamins, minerals and amino acids form the brick-and-mortar foundation of a healthy body. The 2015 Dietary Guidelines Advisory Committee reported that many Americans fall short in obtaining sufficient quantities of these important nutrients, including vitamins A, C, D and E, folate, calcium, magnesium, potassium, and fiber. Also, the prevalence of insufficient nutrient intake tends to increase with age. 35 to 40 percent of older adults who do not take supplements have inadequate B6 intake, and older adults often have difficulty obtaining enough B12 from their diet. Supplementation with vitamins, minerals and amino acids can play a valuable role in helping to fill these gaps.*
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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Customer Reviews
4.7 out of 5 stars 1,162
4.5 out of 5 stars 96
4.7 out of 5 stars 317
4.6 out of 5 stars 554
3.8 out of 5 stars 11
4.5 out of 5 stars 28
Price
$16.20$16.20 $22.60$22.60 $23.20$23.20
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BONE HEALTH*
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OVERALL HEALTH*
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Is Discontinued By Manufacturer : No
Product Dimensions : 3.5 x 1.7 x 1.7 inches; 1.76 ounces
Item model number : 310539031483
Date First Available : August 13, 2009
Manufacturer : Douglas Laboratories
ASIN : B001VM3E5O
Best Sellers Rank: #97,781 in Health & Household (See Top 100 in Health & Household) #272 in Zinc Mineral Supplements
Customer Reviews: 4.4 4.4 out of 5 stars 112 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Antioxidant Support: As a cofactor of the antioxidant enzyme superoxide dismutase (SOD), zinc can be considered an antioxidant nutrient.*
Immune & Skin Health: Zinc has important functions in maintaining normal immune function, reproduction, healthy skin and growth. Also helps in maintaining healthy vision as we age.*
Vitamins/Minerals/Amino Acids: Our vitamins/minerals and amino acid formulas are developed to provide beneficial support in filling nutrient gaps.*
Our uncompromising operational practices at our state-of-the-art manufacturing facilities surpass GMP standards and manufacturing regulations. All of our products are GMO-free.
For 65 years, Douglas Laboratories has been dedicated to meeting the needs of healthcare professionals. As a globally recognized leader in the development of innovative, science-based nutritional supplements, we strive to help healthcare professionals and their patients push their potential for healthy living, today and in the future.*
Customers say
Customers find the zinc supplement effective, particularly noting its benefits for lowering cortisol levels before bed and supporting the immune system. The product receives positive feedback for its quality.
8 reviews for Douglas Laboratories Opti Zinc 30 mg. | Zinc Monomethionine Supports Immune Function and Healthy Skin | 90 Capsules
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$18.60


Donna M –
Seems good
I can’t tell any difference, but my doctor, who is amazing, likes this version for me.
Charles Reed- Pi –
<24h acute response in athlete.
Super responder displayed immediate benefits in endurance sets, undocumented previously, and better night vision.
Sherry –
Ok
Ok
Danny spells –
price
No dislikes will buy more
Joyce –
Good for lowering evening cortisol levels
Good stuff for lowering cortisol levels before bed. 1 capsule (30mg Zinc) with a light snack for good Zinc absorption works well for me. It lowers cortisol levels for about 4 hrs.If I wake up, I use another method for falling back to sleep, because I do t want to overdo it on the Zinc.Excellent quality. My favorite brand.
ScooterBoo –
Said a Pprayer, and now Taking a Chance.
My pet has really bad allergies the vet says. And a skin condition that I was previously (for the past 31/2 years) giving her apporquil to control the sores and dryness, itching bad. But I was reading a article about a lack of vitamin zinc in her diet could cause the condition and sometimes worse
Barbara Richardson –
One Star
I really did not feel this did anything for me.
R. J. Truitt –
Best Zinc supplement with significant personal results for me
Wonderful product, best results. Significant results and best I’ve used. I’ve taken Zinc supplements for over 20 years aiding my health and have not felt significant results until I started taking this one 6 months ago.I use this product for both stress control and reproductive health.