Selenium 200mcg Capsules Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Selenium 200mcg Capsules sales on Amazon US totaled 80,000 units in July 2026 (▼ 15.4% vs. the prior month), generating an estimated $1,571,824 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 62.5% of unit volume and 63.5% of revenue, while a typical listing is priced at $18.69. The keyword itself pulled 23,490 Amazon queries over the same period (▲ 5.2% MoM).
Zooming out to the 12-month window ending July 2026, the selenium 200mcg capsules Top 50 moved 1,031,700 units and $20,123,164 in cumulative sales — an average of 85,975 units and $1,676,930 per month. Monthly throughput topped out at 98,100 units in March 2026 and dipped to 55,950 in May 2026, leaving the latest reading 0.2% lower than August 2025.
Selenium 200mcg Capsules Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
80K
▼ 15.4% MoM
Monthly Revenue 2026/07
$1.6M
▼ 16.6% MoM
Top 10 Market Share 2026/07
62.5%
Selenium 200mcg Capsules Market Share & Sales Concentration on Amazon US — July 2026
The most-sold selenium 200mcg capsules listing on Amazon US in July 2026 is ASIN B0013OUQ3S (Brand: NOW), which sold 10,000 units at $21.85 apiece — equal to 12.5% of every unit tracked in this report.
The Top 10 ASINs account for 50,000 units and $997,830 in July 2026 — 62.5% of unit volume and 63.5% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Selenium 200mcg Capsules' on Amazon
July 2026
Is 62.5% Top 10 share highly concentrated?
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Top 5 Volume Share breakdown
B0013OUQ3S
NOW Supplements, NAC (N-Acetyl Cysteine) 600 mg with Selenium, 250 Veg Capsules
10K
▼ 50.0%vs. prior month
$217.3K
latest month
12-month trend
B00B5N9IDQ
THORNE Selenium, 200 mcg L-Selenomethionine Supplement, 60 Capsules | Supports Healthy Thyroid Function, Immune Function, Healthy Aging & Antioxidant Defense*, NSF Contents Certified
10K
▲ 0.0%vs. prior month
$140K
latest month
12-month trend
B0BT6C8NGW
Clean Nutra Selenium 300mcg Iodine 500mcg Thyroid Support for Women & Men | L Tyrosine 500mg Ashwagandha Supplement Bladderwrack, Turmeric, Kelp, Schisandra Zinc Pills Capsule Supplements
5K
▼ 28.6%vs. prior month
$131.3K
latest month
12-month trend
B00M13NHFY
1 Body Thyroid Support for Women & Men, Iodine & Selenium Supplement | Supports healthy thyroid function, energy production, metabolism & daily wellness with essential nutrients.
5K
▼ 16.7%vs. prior month
$142.6K
latest month
12-month trend
B000H85L5Y
Pure Encapsulations Selenium, 200 mcg | For Healthy Cellular Function, Immune System and Antioxidant Defenses*, Mineral Supplement, Vegan and Gluten-Free
4K
▲ 0.0%vs. prior month
$58K
latest month
12-month trend
B079B2PDW1
Nutricost Selenium 200mcg, 240 Vegetarian Capsules, L-Selenomethionine | Gluten Free, GMO-Free
4K
▲ 0.0%vs. prior month
$55.8K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best Selenium 200mcg Capsules Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
THORNE is the best-performing selenium 200mcg capsules brand in July 2026, moving 13,000 units across 2 ASINs for 26.0% of Top 10 volume. NOW follows with 10,000 units (20.0%), ahead of Clean Nutraceuticals on 5,000 units (10.0%).
Volume is spread across 9 brands, with the top three holding 56.0% between them. No single label controls the shelf, which usually leaves room for a well-differentiated listing to take share without outspending an incumbent. Average selling prices among the leaders run from $18.87 to $27.00, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
THORNE
2 ASINs in Top 10
26.0%
Units
13K
Revenue
$260K
Avg. price
$27.00
B00B5N9IDQ
$14.00·★4.7·4.5K revsTHORNE Selenium, 200 mcg L-Selenomethionine Supplement, 60 Capsules | Supports Healthy Thyroid Function, Immune Function, Healthy Aging & Antioxidant Defense*, NSF Contents Certified
Units sold10KB004W9NGJM
$40.00·★4.6·1.2K revsTHORNE Thyroid Health Complex, Iodine, L-Tyrosine & Selenium, 120 Capsules | Supports Healthy Thyroid Function, Metabolism & Mental Clarity, Promotes Energetic Feelings*, NSF Contents Certified
Units sold3K
NOW
1 ASIN in Top 10
20.0%
Units
10K
Revenue
$217.3K
Avg. price
$21.85
B0013OUQ3S
$21.85·★4.6·21.1K revsNOW Supplements, NAC (N-Acetyl Cysteine) 600 mg with Selenium, 250 Veg Capsules
Units sold10K
Clean Nutraceuticals
1 ASIN in Top 10
10.0%
Units
5K
Revenue
$131.3K
Avg. price
$18.87
B0BT6C8NGW
$18.87·★4.5·3.4K revsClean Nutra Selenium 300mcg Iodine 500mcg Thyroid Support for Women & Men | L Tyrosine 500mg Ashwagandha Supplement Bladderwrack, Turmeric, Kelp, Schisandra Zinc Pills Capsule Supplements
Units sold5K
Trending Selenium 200mcg Capsules Products — Growth Leaders & New Top 10 Entrants
Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. On the growth side, B000F4ZVKK leads positive momentum with ▲ 200.0% MoM growth on 300 units, with B00XRPTKQA close behind at ▲ 100.0% MoM on 400 units.
The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.
B000F4ZVKK
Nature's Way Selenium - L-Selenomethionine Supplement for Antioxidant Support* - 200 mcg per Serving - Dairy, Soy & Gluten-Free - 100 Count (100 Servings)
Price
$10.99
Rating
4.6
Reviews
2.1K
Latest month sales
B00XRPTKQA
Nature's Truth Selenium Supplement | 200 mcg | Essential Mineral High Potency Tablets | Vegan, Non-GMO & Gluten Free
Price
$6.69
Rating
4.6
Reviews
410
Latest month sales
B0G5S1GMZM
Thyroid Support Drops - Selenium, Zinc, Iodine, L Tyrosine, Ashwagandha, Turmeric, Schisandra Guggu, Cayenne, Basil - Liquid Supplement Folate Copper Alcohol -Free, Vegan, Non-GMO – 4 oz
Unlock to view ASIN details and product titles
Price
$29.95
Rating
4.2
Reviews
141
Latest month sales
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