Minerals & electrolytes
Selenium
A mineral from Brazil nuts, fish and eggs. Your body needs it for the thyroid, the immune system and to protect cells from damage.
78 products from US online stores, sorted by what 100 µg of selenium costs – not by the price per pack.
2¢Lowest cost
per 100 µg selenium
- Prices checked Nov 1, 2026, US
- No paid placements
What does 100 µg mean?
- selenium per serving in most of the products we checked
- 100–200 µgselenium per serving in most of the products we checked
- 100 µg is a fixed amount to compare by: half of the 78 products we checked have up to 200 µg per serving, the other half more.
- 100 µg is more than the 55 µg recommended a day for adults (NIH (opens in a new tab)).
We compare by 100 µg only so products line up – it’s not a recommendation. Not medical advice.
Where products miss quality points
How the 78 products score
- Very good 90+: 0
- Good 75+: 78
- Fair 60+: 0
- Low under 60: 0
- have no seal from an independent testing program
- 100%have no seal from an independent testing program10 of 30 testing points for GMP, 15 for the 3 whose label says “third-party tested”
The full 30 testing points need an independent test. Every supplement sold in the US is made under the FDA’s GMP rules – the maker checks its own products, which gives 10 points. A seal from a testing program like NSF, USP or Informed Choice means a lab outside the company checks that what’s inside matches the label. Most brands don’t take part. That doesn’t make a product bad – without a seal, a clean product still gets up to 80.
We find seals on the label and in NSF’s public lists. USP and Informed Choice don’t let us search their lists automatically, so a seal that’s only in their lists can be missing. How the score works
Pack size
Compare packs of a similar size.
All sizes in one list can affect the results – big packs usually cost less per 100 µg. Pick a size above to compare packs that are alike.
78 products · cheapest per 100 µg selenium first
- Rank 1
Vitacost
Selenium, 200 mcg
Capsules
80Good qualityCountry not stated2¢per 100 µg
Lowest
- Pack
- $12.09300 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 300 daysif you take 1 capsule (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 2
Vitamatic
Selenium, 200 mcg
Tablets
80Good qualityCountry not stated2.1¢per 100 µg
3% more
- Pack
- $9.99240 tablets
- Selenium per serving
- 200 µgin 1 tablet
- Pack lasts
- 240 daysif you take 1 tablet (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 3
Best Naturals
Selenium 200 mcg
Tablets
80Good qualityMade in USA2.1¢per 100 µg
3% more
- Pack
- $9.99240 tablets
- Selenium per serving
- 200 µgin 1 tablet
- Pack lasts
- 240 daysif you take 1 tablet (200 µg) a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 4
Vitamatic
Yeast-Free Selenium 200 mcg
Tablets
80Good qualityMade in USA2.1¢per 100 µg
3% more
- Pack
- $9.99240 tablets
- Selenium per serving
- 200 µgin 1 tablet
- Pack lasts
- 240 daysif you take 1 tablet (200 µg) a day
vitamaticusa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 5
Vitacost
Selenium, 200 mcg
Capsules
80Good qualityCountry not stated2.1¢per 100 µg
5% more
- Pack
- $8.46200 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 200 daysif you take 1 capsule (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 6
Micro Ingredients
Selenium, 200 mcg
Softgels
80Good qualityCountry not stated2.4¢per 100 µg
19% more
- Pack
- $23.99500 softgels
- Selenium per serving
- 200 µgin 1 softgel
- Pack lasts
- 500 daysif you take 1 softgel (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 7
Best Naturals
Selenium, 200 mcg
Tablets
80Good qualityMade in USA2.4¢per 100 µg
21% more
- Pack
- $11.70240 tablets
- Selenium per serving
- 200 µgin 1 tablet
- Pack lasts
- 240 daysif you take 1 tablet (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 8
Micro Ingredients
Selenium Supplement 200mcg with Coconut Oil
Softgels
80Good qualityCountry not stated2.5¢per 100 µg
24% more
- Pack
- $24.95500 softgels
- Selenium per serving
- 200 µgin 1 softgel
- Pack lasts
- 500 daysif you take 1 softgel (200 µg) a day
microingredients.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 9
Futurebiotics
Selenium, 200 mcg
Capsules
80Good qualityMade in USA2.6¢per 100 µg
30% more
- Pack
- $5.22100 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 100 daysif you take 1 capsule (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 10
Futurebiotics
Selenium 200 mcg
Capsules
80Good qualityMade in USA2.6¢per 100 µg
30% more
- Pack
- $5.22100 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 100 daysif you take 1 capsule (200 µg) a day
futurebiotics.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 11
Nutricost
Selenium, 200 mcg
Capsules
85Good qualityMade in USA2.9¢per 100 µg
44% more
- Pack
- $13.95240 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 240 daysif you take 1 capsule (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 12
Futurebiotics
Selenium 200 mcg
Capsules
80Good qualityMade in USA3¢per 100 µg
49% more
- Pack
- $14.99250 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 250 daysif you take 1 capsule (200 µg) a day
futurebiotics.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 13
Vitacost
Selenium, 200 mcg
Capsules
80Good qualityCountry not stated3¢per 100 µg
50% more
- Pack
- $6.04100 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 100 daysif you take 1 capsule (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 14
Force Factor
Selenium, 200 mcg
Capsules
80Good qualityMade in USA3.1¢per 100 µg
55% more
- Pack
- $7.49120 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 15
Nutricost
Selenium Capsules
Capsules
85Good qualityCountry not stated3.3¢per 100 µg
65% more
- Pack
- $15.97240 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 240 daysif you take 1 capsule (200 µg) a day
nutricost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 16
NOW Foods
Selenium, 200 mcg
Capsules
80Good qualityMade in USA3.4¢per 100 µg
69% more
- Pack
- $12.24180 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 180 daysif you take 1 capsule (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 17
California Gold Nutrition
Selenium, Yeast-Free, 200 mcg
Capsules
80Good qualityCountry not stated3.4¢per 100 µg
70% more
- Pack
- $12.36180 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 180 daysif you take 1 capsule (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 18
NOW Foods
Selenium, 100 mcg
Tablets
80Good qualityMade in USA3.5¢per 100 µg
75% more
- Pack
- $8.81250 tablets
- Selenium per serving
- 100 µgin 1 tablet
- Pack lasts
- 250 daysif you take 1 tablet (100 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 19
Swanson Vitamins
Selenium, 200 mcg
Capsules
80Good qualityCountry not stated3.5¢per 100 µg
76% more
- Pack
- $8.49120 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 20
Swanson Vitamins
Selenium
Capsules
80Good qualityCountry not stated3.5¢per 100 µg
76% more
- Pack
- $8.49120 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (200 µg) a day
swansonvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 21
Nature's Truth
Selenium, High Potency, 200 mcg
Tablets
80Good qualityCountry not stated3.6¢per 100 µg
79% more
- Pack
- $7.23100 tablets
- Selenium per serving
- 200 µgin 1 tablet
- Pack lasts
- 100 daysif you take 1 tablet (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 22
NOW Foods
Selenium, 200 mcg
Capsules
80Good qualityMade in USA3.8¢per 100 µg
91% more
- Pack
- $6.9290 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 90 daysif you take 1 capsule (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 23
Healthy Origins
Selenium Capsules (Seleno Excell)
Capsules
80Good qualityCountry not stated3.9¢per 100 µg
93% more
- Pack
- $13.99180 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 180 daysif you take 1 capsule (200 µg) a day
healthyorigins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 24
Source Naturals
Selenium, 200 mcg
Tablets
80Good qualityCountry not stated4.2¢per 100 µg
107% more
- Pack
- $10.03120 tablets
- Selenium per serving
- 200 µgin 1 tablet
- Pack lasts
- 120 daysif you take 1 tablet (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 25
Swanson Vitamins
Selenium, 100 mcg
Capsules
80Good qualityCountry not stated4.3¢per 100 µg
112% more
- Pack
- $12.79300 capsules
- Selenium per serving
- 100 µgin 1 capsule
- Pack lasts
- 300 daysif you take 1 capsule (100 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 26
Swanson Vitamins
Selenium L-Selenomethionine
Capsules
80Good qualityCountry not stated4.3¢per 100 µg
112% more
- Pack
- $12.79300 capsules
- Selenium per serving
- 100 µgin 1 capsule
- Pack lasts
- 300 daysif you take 1 capsule (100 µg) a day
swansonvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 27
Source Naturals
Selenium
Tablets
80Good qualityCountry not stated4.3¢per 100 µg
114% more
- Pack
- $10.35120 tablets
- Selenium per serving
- 200 µgin 1 tablet
- Pack lasts
- 120 daysif you take 1 tablet (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 28
Swanson Vitamins
SelenoExcell, Selenium, 200 mcg
Capsules
80Good qualityCountry not stated4.5¢per 100 µg
123% more
- Pack
- $5.3960 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 29
Swanson Vitamins
SelenoExcell Selenium
Capsules
80Good qualityCountry not stated4.5¢per 100 µg
123% more
- Pack
- $5.3960 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (200 µg) a day
swansonvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 30
Nature's Truth
Selenium 200 mcg
Tablets
80Good qualityCountry not stated4.5¢per 100 µg
123% more
- Pack
- $8.99100 tablets
- Selenium per serving
- 200 µgin 1 tablet
- Pack lasts
- 100 daysif you take 1 tablet (200 µg) a day
naturestruth.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 31
Nature's Bounty
Selenium, 200 mcg
Tablets
80Good qualityMade in USA4.5¢per 100 µg
125% more
- Pack
- $9.08100 tablets
- Selenium per serving
- 200 µgin 1 tablet
- Pack lasts
- 100 daysif you take 1 tablet (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 32
21st Century
Selenium 200 mcg
Capsules
80Good qualityCountry not stated4.6¢per 100 µg
127% more
- Pack
- $5.4960 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (200 µg) a day
21stcenturyvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 33
Solgar
Selenium, Yeast-Free, 200 mcg
Tablets
80Good qualityCountry not stated4.7¢per 100 µg
134% more
- Pack
- $23.60250 tablets
- Selenium per serving
- 200 µgin 1 tablet
- Pack lasts
- 250 daysif you take 1 tablet (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 34
NOW Foods
Selenium, 100 mcg
Tablets
80Good qualityMade in USA4.8¢per 100 µg
138% more
- Pack
- $4.79100 tablets
- Selenium per serving
- 100 µgin 1 tablet
- Pack lasts
- 100 daysif you take 1 tablet (100 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 35
Source Naturals
Selenium, Yeast Free, 200 mcg
Tablets
80Good qualityCountry not stated4.9¢per 100 µg
144% more
- Pack
- $5.8960 tablets
- Selenium per serving
- 200 µgin 1 tablet
- Pack lasts
- 60 daysif you take 1 tablet (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 36
21st Century
Selenium, 200 mcg
Capsules
80Good qualityCountry not stated5¢per 100 µg
150% more
- Pack
- $6.0460 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 37
Sundance Vitamins
Selenium 200mcg
Tablets
78Good qualityCountry not stated5.1¢per 100 µg
154% more
- Pack
- $6.1360 tablets
- Selenium per serving
- 200 µgin 1 tablet
- Pack lasts
- 60 daysif you take 1 tablet (200 µg) a day
sundancevitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 38
Swanson Vitamins
Albion Selenium, 200 mcg
Capsules
80Good qualityCountry not stated5.2¢per 100 µg
156% more
- Pack
- $9.2990 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 90 daysif you take 1 capsule (200 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 39
Swanson Vitamins
Albion Selenium
Capsules
80Good qualityCountry not stated5.2¢per 100 µg
156% more
- Pack
- $9.2990 capsules
- Selenium per serving
- 200 µgin 1 capsule
- Pack lasts
- 90 daysif you take 1 capsule (200 µg) a day
swansonvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 40
Nutricost
Selenium, 100 mcg
Capsules
85Good qualityMade in USA5.4¢per 100 µg
168% more
- Pack
- $12.95240 capsules
- Selenium per serving
- 100 µgin 1 capsule
- Pack lasts
- 240 daysif you take 1 capsule (100 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
Good to know
- Fact
- 1,407%more per 100 µg for the most expensive product than for the cheapest.
- Fact
- 749%more per 100 µg for the cheapest liquid than for the cheapest capsules.
How we checked: one-time price for each size in the store’s US online shop, before sales tax and shipping, without subscriptions or coupons. Prices change often, so check the store before you buy. More on how we check
The amount we compare by only makes products comparable – it is not a dosage recommendation. Not medical advice.
How we calculate
Cost per dose = price ÷ (servings × amount per serving) × comparison amount. Example: $119.99 for 74 servings with 24 g of protein each is 1,776 g of protein. $119.99 ÷ 1,776 g × 30 g = $2.03 per 30 g of protein.
Found a mistake or a product we should add? Email us