Customer Ratings & Reviews

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4.9

Based on 9,993 ratings

8,997

708

195

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What customers say

Customers appreciate the convenience of Dr. Mercola's Zinc Plus Selenium supplement, which combines both minerals in a single capsule. The product is praised for its high quality, strong packaging, and effectiveness in supporting immune health, thyroid function, and overall wellness. Many users report improvements in hair and nail strength. The supplement is easy to swallow with no side effects noted. Customers trust Dr. Mercola's brand for its reasonable pricing and reliable quality.

Review highlights

Top positive review

iHerbCustomer

Posted on Feb 3, 2024

United Kingdom (UK)

271

155

Great for Sports

Zinc Bisglycinate Chelate - the best form of zinc. 15 mg - a good dosage, not too little, not too much. A nutritionist prescribed it for my son of 12 y.o. who is swimming in a squad five times a week early in the morning for two hours. Dr Mercola is considered to be one of the best in the market. Indeed, my son is doing well and not have sicknesses. Small size of capsules. No taste, no smell.

(9,836)

Pharmabd

Posted on Mar 10, 2026

United States

Pharmabd

Verified purchase

I haven't noticed any negative side effects so far. ✔️ Good quality ✔️ Easily digestible ✔️ Good results ✔️ Good packaging ✔️ Good Supplement ✔️ Good Ingredient ✔️ Good Benefits ✔️ Good Composition ✔️ Good Frequency ✔️ Good Size ✔️ Good Mineral ✔️ Good Taste

Lubna

Gold

Posted on Feb 5, 2026

Qatar

541

126

Verified purchase

Great quality products with excellent ingredients. The quantity is generous for the price, and everything arrived well-packaged. Delivery was fast and smooth. Very satisfied with my order and will definitely repurc

iHerb customer

Posted on Nov 16, 2025

United Arab Emirates

High-Quality Immune Support & Excellent iHerb Service

Verified purchase

This is an excellent supplement for anyone looking to bolster their immune system. The formulation of Dr. Mercola's Zinc Plus Selenium is well-balanced, and I appreciate that it includes copper, which is essential for proper zinc absorption and balance. The capsules are easy to take, and I feel confident in the quality of the ingredients. It's a key part of my daily wellness routine. I also want to mention the great experience I had purchasing from iHerb. Their mobile application is easy to navigate, I found exactly what I needed, and the delivery was incredibly fast and efficient. It's a reliable company that I trust for my supplement needs.

iHerb-Liza

Silver

Posted on Apr 13, 2026

Netherlands

101

Verified purchase

I like the quality, buying it from time to time, because (everyone) needs zink, and selenium:) , i feel like i get less sick when taking it.

iHerb customer

Posted on Mar 31, 2026

United Kingdom (UK)

Verified purchase

like that this supplement combines both zinc and selenium in one capsule — it’s just more convenient than taking them separately. The capsules are small and easy to swallow, and I didn’t notice any unpleasant taste or side effects. I’ve been taking it with food as recommended, and it feels gentle on the stomach. I mainly got it to support my immune system and overall health. It’s hard to measure exact results, but I feel like it’s a good basic supplement to include in a routine. The dosage also seems well balanced (not too high), which I appreciate. Overall, a simple and convenient option if you’re looking for zinc + selenium together.

iHerbCustomer

Gold

Posted on Oct 3, 2025

Singapore

862

120

Nice

Verified purchase

I wanted something to support my immune system, help with occasional thinning hair, and just generally boost energy, and this combo has delivered more than I expected. Because it has copper, people with existing high copper or certain conditions might want to double check with a doctor. (Copper can interfere with zinc or have effects in certain health situations.)

IherbLover

Silver

Posted on Oct 1, 2025

United States

112

Excellent Immune Support Supplement

Verified purchase

I've been using Dr. Mercola Zinc Plus Selenium for a long time and have noticed improved immune function and overall well-being. It covers most of my deficiency. The combination of zinc, selenium, and copper in bioavailable forms like bisglycinate chelate and fermented yeast ensures optimal absorption. The capsule size is easy to swallow and ingredients are free from GMOs, gluten, and soy. I appreciate the clean formula and the added copper to balance zinc intake. This supplement has become a staple in my daily regimen, I see effect - great product with great quality!

iHerb customer

Silver

Posted on Sep 20, 2025

Singapore

181

Verified purchase

Zinc and copper supplements support immune function, energy production, and antioxidant defense by working with enzymes like superoxide dismutase. Benefits also include maintaining healthy skin, hair, nails, and bone; normal vision; and energy production through the formation of red blood cells. The balance between zinc and copper is crucial, as high zinc intake can deplete copper levels, potentially leading to negative health effects.

Akkad

Gold

Posted on Mar 23, 2026

United Arab Emirates

418

Great

Verified purchase

This is a great product with a good company brand & package was nice with fast delivery & great effect.

iulia32

Silver

Posted on Mar 6, 2026

Moldova, Republic of

157

super

Verified purchase

one of the best antioxidants. take for thyroid problems. i hope to receive results

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