---
title: "Selenium and Zinc Supplements — $482K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/selenium-and-zinc-supplements"
last_updated: "2026-08-11T11:17:30.202Z"
locale: en
meta:
description: "Niche score 55/100 · $482K/yr market · 225K searches/yr · $29.16 avg price. Soft demand (-10.3% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 55/100 · $482K/yr market · 225K searches/yr · $29.16 avg price. Soft demand (-10.3% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Selenium and Zinc Supplements — $482K/yr Amazon US Niche (2026) - Flapen"
---
# **selenium and zinc supplements**
**Worth a look**
Shows low returns (0.0%), but soft demand (-10.3% this quarter) keeps it on the watch list.
Market size 59Growth 20Conversion 76Competition 51Returns 100Price range 84Avg price 95Brand share 48Review moat 31Quality gap 25
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$29.16**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$4.99–$77.90**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****7.3%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Good****$482K**
$482K/yr · 225K searches
**Competition**
**Good****55%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****76%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****3,396.38**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-10.3%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, selenium and zinc supplements is a $482K/yr Amazon United States market (225K searches/yr). The top 5 brands hold 76% of demand. Demand peaks in Jan–Aug. Verdict: Worth a look — 55/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **selenium and zinc supplements market data**
- **Units sold / yr**
- **15K–20K**
- avg 750–1,000/product
- **Revenue / yr**
- **$437K–$583K**
- units × avg price
- **Conversion rate**
- **7.3%**
- **Avg BSR**
- **#431**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **95%**
- **Out of stock**
- **0.4%**
- **Avg brand age**
- **72 months**
- **Avg seller age**
- **150 days**
## **Competition & brand share**
The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **—flat
**Sellers**
**555**
**Top-5 brand share**
**76%**
Top 20: 93%
**Top-5 click share**
**55%**
Top 20: 99%
**Open market**
**17%**
- Dr. Mercola54% - --7% - Terry Naturally6% - Nutricost6% - New Chapter5% - SANDHUHERBALS5% - Open — no brand owns it (5 brands, 17%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -10.3% search growth over the last 90 days.
10K6KSpike '24Spike '25Black Friday '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Aug · busiest ÷ quietest = 2.1×
[**Open Trend **](https://flapen.com/research/us/health-household/selenium-and-zinc-supplements/trend)
## **Top selenium and zinc supplements search terms**
- **dr mercola**60K/yr-16.7%2.3% conv. - **zinc and selenium supplement**23K/yr+0.7%6.9% conv. - **zinc selenium**19K/yr+8.9%6.9% conv. - **mercola**18K/yr-13.3%2.8% conv. - **selenium and zinc**9K/yr-10.9%5.1% conv. - **selenio y zinc**10K/yr-11.8%2.0% conv. - **zinc selenium supplements**12K/yr-14.3%6.5% conv. - **selenium zinc**10K/yr-22.1%5.4% conv. - **selenium and zinc supplements**10K/yr-13.8%5.6% conv. - **dr. mercola**9K/yr-18.5%2.4% conv. [**All search terms **](https://flapen.com/research/us/health-household/selenium-and-zinc-supplements/search-terms)
## **Top selenium and zinc supplements products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$48K20%$96K30%$145K40%$193K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 21 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Dr. Mercola Zinc Plus Selenium - Mineral Blend Supplement - for Immune Brain & Respiratory Support - Contains Zinc Glycinate Chelate & Copper - GMO-Free & Gluten-Free - 90 Capsules (90 Servings)**Dr. Mercola**$19.56**4.7★4,500 rev](https://www.amazon.com/dp/B07KCJXK9B) [2**Zinc Picolinate 50mg with Copper & Selenium 240 Capsules | 3-in-1 High Absorption Mineral Complex | Chelated Zinc Supplement for Immune Support* | 8 Month Supply**--**$19.09**4.6★2,108 rev](https://www.amazon.com/dp/B08FXYT1RT) [3**Dr. Mercola Zinc Plus Selenium - Mineral Blend Supplement - for Immune Brain & Respiratory Support - Contains Zinc Glycinate Chelate & Copper - GMO-Free & Gluten-Free - 30 Capsules (30 Servings)**Dr. Mercola**$9.95**4.7★4,500 rev](https://www.amazon.com/dp/B079M3NDBF) [4**Terry Naturally Zinc Plus Selenium - Immune & Respiratory Health Supplement - Mineral Supplement with Zinc Bisglycinate Chelate - Formula with Selenium for Cellular Health Support - 60 Capsules**Terry Naturally**$16.21**4.5★435 rev](https://www.amazon.com/dp/B08S1RDC1Z) [5**Nutricost Zinc (50mg) with Selenium (200mcg) 240 Capsules Gluten-Free**Nutricost**$17.05**4.5★31 rev](https://www.amazon.com/dp/B0GZ883XYP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Nutricost Zinc (50mg) with Selenium (200mcg) 240 Capsules Gluten-Free**Nutricost**$17.05**31 rev2mo ago](https://www.amazon.com/dp/B0GZ883XYP) [**Zinc 30mg with Copper Selenium & Vitamin D3 | 120 Capsules | Magnesium Vitamin B6 Biotin Complex | Absorbable Chelated Zink Supplements for Men & Women | for Hair Skin Nails & Immune Support**SANDHUHERBALS**$24.60**22,002 rev10mo ago](https://www.amazon.com/dp/B0FRJKX9JX) [**Dr. Berg Zinc 30 mg (60 Capsules) High Potency 7-in-1 Immune Support Formula Chelated Zinc with Vitamin D & Selenium for Healthy Skin Hair & Daily Wellness No Fillers 4X Tested***Dr. Berg Nutritionals**$23.97**1,880 rev1y ago](https://www.amazon.com/dp/B0DDQDSQ86) [**NEW AGE Selenium Zinc Iodine L Tyrosine Ashwagandha - Supplement for Women and Men with Bladderwrack Turmeric Silica Kelp Schisandra - 120 Count**NEW AGE**$33.81**1,179 rev1y ago](https://www.amazon.com/dp/B0DCPDVXV5) [**New Chapter Magnesium + Selenium & Zinc Tablets - Bone Health & Muscle Support Supplement* - Supports Electrolyte Balance* - Vegan Gluten Free Non-GMO & Kosher - 30 Tablets**New Chapter**$16.49**475 rev2y ago](https://www.amazon.com/dp/B0CV656QBN)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Nutricost Zinc (50mg) with Selenium (200mcg) 240 Capsules Gluten-Free**Nutricost**$17.05**4.5★**▲ 336%**](https://www.amazon.com/dp/B0GZ883XYP) [**Zinc 30mg with Copper Selenium & Vitamin D3 | 120 Capsules | Magnesium Vitamin B6 Biotin Complex | Absorbable Chelated Zink Supplements for Men & Women | for Hair Skin Nails & Immune Support**SANDHUHERBALS**$24.60**4.7★**▲ 80%**](https://www.amazon.com/dp/B0FRJKX9JX) [**Dr. Mercola Complete Probiotics - 70 Billion CFU - Supports Immune Digestive & Gut Health - Features 10 Strains - Shelf Stable - GMO-Free Gluten-Free & Soy-Free - 90 Capsules (90 Servings)**Dr. Mercola**$72.36**4.6★**▲ 44%**](https://www.amazon.com/dp/B005H41FVC) [**New Chapter Magnesium + Selenium & Zinc Tablets - Bone Health & Muscle Support Supplement* - Supports Electrolyte Balance* - Vegan Gluten Free Non-GMO & Kosher - 30 Tablets**New Chapter**$16.49**4.7★**▲ 12%**](https://www.amazon.com/dp/B0CV656QBN) [**NOW Supplements Selenium (L-Selenomethionine) 100 mcg Essential Mineral* 100 Tablets**NOW Foods**$4.99**4.7★**— 9%**](https://www.amazon.com/dp/B000A2L8NQ)
**~~View all trending →~~**
## **What buyers say about selenium and zinc supplements**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**23%
*“The quality feels consistent”*
**Vitamin**12%
*“Easy to take vitamin”*
**Energy Level**4%
*“my energy level has improved significantly”*
**Value For Money**4%
*“Great value”*
**Efficiency**4%
*“Its effective”*
**Hormonal Balance**4%
*“Thyroid support”*
**Advertised Vs Actual Product**3%
*“As Advertised”*
**Dosage**3%
*“The doses are easy to take”*
**Regulates Digestion**3%
*“Easy to digest”*
**Nutritional Content**2%
*“its a pretty straightforward supplement that fits into my daily routine without fuss”*
### **What buyers complain about **
**Side Effects**9%
*“can make you nauseous”*
**Dosage**8%
*“appears to exceed safe/legal dosage limits”*
**Taste-Overall**7%
*“Has no taste”*
**Functionality-Overall**6%
*“Did not work”*
**Value For Money**6%
*“To expensive”*
**Size-Overall**5%
*“they are HUGE”*
**Acid Regulator/Stomach Ache Relief**4%
*“have had horrific stomach cramps for several hours now”*
**Vitamin**4%
*“I cannot recommend this brand nor vitamin combination”*
**Smell**3%
*“Smells weird”*
**Regulates Digestion**3%
*“May cause gastrointestinal issues”*
### **Top return reasons **
**Ingredients-Overall**20%
**Dosage**15%
**Acid Regulator/Stomach Ache Relief**15%
**Size-Overall**10%
**Functionality-Overall**10%
**Advertised Vs Actual Product**10%
**Vegan/Organic**10%
**Product Condition**5%
**Vitamin**5%
## **Common questions**
- **Is selenium and zinc supplements profitable to sell on Amazon United States?**
- The niche generates $482K/yr across 21 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -10.3%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the selenium and zinc supplements niche?**
- 11 brands and 555 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 76% of demand.
- **What do buyers complain about in selenium and zinc supplements?**
- Top complaints mined from reviews: Side Effects, Dosage, Taste-Overall. The return rate is 0.0%.
- **When does demand for selenium and zinc supplements peak?**
- Demand peaks in Jan–Aug; the busiest month runs 2.1× the quietest.
- **What does it cost to enter the selenium and zinc supplements niche?**
- Listings span $4.99–$77.90; the average listing price is $29.16 (sweet spot $15–$100). The average incumbent carries 3,396 reviews — the moat a new listing must climb.
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