Vitamins
Vitamin D
The “sunshine vitamin” – the skin makes it in sunlight. Your body needs it to take up calcium for bones and teeth, and for muscles and the immune system.
531 products from US online stores, sorted by what 25 µg of vitamin D costs – not by the price per pack.
1.2¢Lowest cost
per 25 µg vitamin D
- Prices checked Nov 1, 2026, US
- No paid placements
What does 25 µg mean?
- vitamin D per serving in most of the products we checked
- 25–250 µgvitamin D per serving in most of the products we checked
- recommended a day for adults – 600–800 IU (NIH)
- 15–20 µgrecommended a day for adults – 600–800 IU (NIH)
- upper limit a day for adults – 4,000 IU (NIH)
- 100 µgupper limit a day for adults – 4,000 IU (NIH)
- 25 µg is a fixed amount to compare by: half of the 531 products we checked have up to 55 µg per serving, the other half more.
- 25 µg is more than the 15–20 µg recommended a day for adults (NIH (opens in a new tab)).
We compare by 25 µg only so products line up – it’s not a recommendation. Not medical advice. More on amounts, with sources
Where products miss quality points
How the 531 products score
- Very good 90+: 39
- Good 75+: 488
- Fair 60+: 4
- Low under 60: 0
- have no seal from an independent testing program
- 93%have no seal from an independent testing program10 of 30 testing points for GMP, 15 for the 26 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 25 µg. Pick a size above to compare packs that are alike.
299 of 531 products · cheapest per 25 µg vitamin D (1,000 IU) first
232 products are hidden
They have more than 100 µg vitamin D in one serving – more than the official upper limit a day for adults.
- Rank 1
Bluebonnet Nutrition
Liquid Vitamin D3 Drops, Citrus, 50 mcg (2,000 IU)
D3 (cholecalciferol) · Liquid
80Good qualityMade in USA1.2¢per 25 µg
Lowest
- Pack
- $20.76900 servings
- Vitamin D per serving
- 50 µg
- Pack lasts
- 1,800 daysif you take 25 µg a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 2
NOW Foods
Liquid Vitamin D-3, 1,000 IU
D3 (cholecalciferol) · Liquid
80Good qualityMade in USA1.2¢per 25 µg
1% more
- Pack
- $8.6029.6 ml (1 fl oz)740 servings
- Vitamin D per serving
- 25 µgin 0.04 ml
- Pack lasts
- 740 daysif you take 25 µg a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 3
Source Naturals
Vitamin D-3
D3 (cholecalciferol) · Liquid
80Good qualityCountry not stated1.3¢per 25 µg
9% more
- Pack
- $17.49118.3 ml (4 fl oz)696 servings
- Vitamin D per serving
- 50 µgin 0.17 ml
- Pack lasts
- 1,391 daysif you take 25 µg a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 4
Healthy Origins
Vitamin D3 2,200 IU
D3 (cholecalciferol) · Capsules
80Good qualityCountry not stated1.3¢per 25 µg
9% more
- Pack
- $9.99360 capsules
- Vitamin D per serving
- 55 µgin 1 capsule
- Pack lasts
- 360 daysif you take 1 capsule (55 µg) a day
healthyorigins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 5
Vitacost
Vitamin D3 Mini Gels, 50 mcg (2,000 IU)
D3 (cholecalciferol) · Softgels
80Good qualityCountry not stated1.4¢per 25 µg
17% more
- Pack
- $9.89365 softgels
- Vitamin D per serving
- 50 µgin 1 softgel
- Pack lasts
- 365 daysif you take 1 softgel (50 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 6
Carlson
Super Daily D3, 100 mcg (4,000 IU)
D3 (cholecalciferol) · Liquid
80Good qualityCountry not stated1.4¢per 25 µg
20% more
- Pack
- $19.1310.4 ml (0.4 fl oz)347 servings
- Vitamin D per serving
- 100 µgin 0.03 ml
- Pack lasts
- 346 daysif you take 25 µg a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 7
Sports Research
Vitamin D3, 100 mcg (4,000 IU)
D3 (cholecalciferol) · Softgels
85Good qualityMade in USA1.4¢per 25 µg
20% more
- Pack
- $19.97360 softgels
- Vitamin D per serving
- 100 µgin 1 softgel
- Pack lasts
- 360 daysif you take 1 softgel (100 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 8
Life Extension
Liquid Vitamin D3, 50 mcg (2,000 IU)
D3 (cholecalciferol) · Liquid
80Good qualityCountry not stated1.4¢per 25 µg
23% more
- Pack
- $21.0029.6 ml (1 fl oz)740 servings
- Vitamin D per serving
- 50 µgin 0.04 ml
- Pack lasts
- 740 daysif you take 25 µg a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 9
Life Extension
Liquid Vitamin D3, Mint
D3 (cholecalciferol) · Liquid
80Good qualityCountry not stated1.4¢per 25 µg
23% more
- Pack
- $21.0029.6 ml (1 fl oz)740 servings
- Vitamin D per serving
- 50 µgin 0.04 ml
- Pack lasts
- 740 daysif you take 25 µg a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 10
Bluebonnet Nutrition
Liquid Vitamin D3 Drops 50 mcg (2000 IU)
D3 (cholecalciferol) · Liquid
80Good qualityCountry not stated1.4¢per 25 µg
25% more
- Pack
- $25.95900 servings
- Vitamin D per serving
- 50 µg
- Pack lasts
- 1,800 daysif you take 25 µg a day
bluebonnetnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 11
Micro Ingredients
Vitamin D3, 2,000 IU
D3 (cholecalciferol) · Softgels
80Good qualityCountry not stated1.5¢per 25 µg
30% more
- Pack
- $14.99500 softgels
- Vitamin D per serving
- 50 µgin 1 softgel
- Pack lasts
- 500 daysif you take 1 softgel (50 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 12
Vitacost
Everyday Essentials, Vitamin D3, 100 mcg (4000 IU)
D3 (cholecalciferol) · Capsules
80Good qualityCountry not stated1.7¢per 25 µg
43% more
- Pack
- $19.83300 capsules
- Vitamin D 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 13
Nature's Answer
Vitamin D3 - Liquid
D3 (cholecalciferol) · Liquid
80Good qualityCountry not stated1.7¢per 25 µg
44% more
- Pack
- $19.99300 servings
- Vitamin D per serving
- 100 µg
- Pack lasts
- 1,200 daysif you take 25 µg a day
naturesanswer.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 14
Metagenics
Vitamin D3 Liquid
D3 (cholecalciferol) · Liquid
80Good qualityCountry not stated1.7¢per 25 µg
45% more
- Pack
- $32.9559.1 ml (2 fl oz)1,970 servings
- Vitamin D per serving
- 25 µgin 0.03 ml
- Pack lasts
- 1,970 daysif you take 25 µg a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 15
Vitacost
Vitamin D3, 100 mcg (4,000 IU)
D3 (cholecalciferol) · Capsules
80Good qualityCountry not stated1.7¢per 25 µg
47% more
- Pack
- $6.77100 capsules
- Vitamin D per serving
- 100 µgin 1 capsule
- Pack lasts
- 100 daysif you take 1 capsule (100 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 16
Nature's Answer
Vitamin D-3 Drops, In Extra Virgin Olive Oil, 100 mcg (4,000 IU)
D3 (cholecalciferol) · Liquid
80Good qualityCountry not stated1.7¢per 25 µg
49% more
- Pack
- $16.49240 servings
- Vitamin D per serving
- 100 µg
- Pack lasts
- 960 daysif you take 25 µg a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 17
California Gold Nutrition
Vitamin D3, 50 mcg (2,000 IU)
D3 (cholecalciferol) · Softgels
80Good qualityCountry not stated1.8¢per 25 µg
52% more
- Pack
- $12.63360 softgels
- Vitamin D per serving
- 50 µgin 1 softgel
- Pack lasts
- 360 daysif you take 1 softgel (50 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 18
Source Naturals
Vitamin D-3
D3 (cholecalciferol) · Liquid
80Good qualityCountry not stated1.8¢per 25 µg
56% more
- Pack
- $24.98118.3 ml (4 fl oz)696 servings
- Vitamin D per serving
- 50 µgin 0.17 ml
- Pack lasts
- 1,391 daysif you take 25 µg a day
sourcenaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 19
Vitacost
Everyday Essentials, Vitamin D3 Mini Gels, 50 mcg (2,000 IU)
D3 (cholecalciferol) · Softgels
80Good qualityCountry not stated1.8¢per 25 µg
59% more
- Pack
- $4.39120 softgels
- Vitamin D per serving
- 50 µgin 1 softgel
- Pack lasts
- 120 daysif you take 1 softgel (50 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 20
NOW Foods
Vitamin D-3 2,000 IU
D3 (cholecalciferol) · Softgels
80Good qualityPacked in USA1.8¢per 25 µg
60% more
- Pack
- $8.83240 softgels
- Vitamin D per serving
- 50 µgin 1 softgel
- Pack lasts
- 240 daysif you take 1 softgel (50 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 21
Bluebonnet Nutrition
Liquid Vitamin D3 Drops, Citrus, 25 mcg (1,000 IU)
D3 (cholecalciferol) · Liquid
80Good qualityMade in USA1.9¢per 25 µg
61% more
- Pack
- $16.76900 servings
- Vitamin D per serving
- 25 µg
- Pack lasts
- 900 daysif you take 25 µg a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 22
Amazing Nutrition
Amazing Formulas Vitamin D3 - 2,000 IU
D3 (cholecalciferol) · Softgels
80Good qualityMade in USA1.9¢per 25 µg
62% more
- Pack
- $17.99480 softgels
- Vitamin D per serving
- 50 µgin 1 softgel
- Pack lasts
- 480 daysif you take 1 softgel (50 µg) a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 23
Vitacost
Vitamin D3, 50 mcg (2000 IU)
D3 (cholecalciferol) · Capsules
80Good qualityCountry not stated2.1¢per 25 µg
80% more
- Pack
- $12.45300 capsules
- Vitamin D per serving
- 50 µgin 1 capsule
- Pack lasts
- 300 daysif you take 1 capsule (50 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 24
Protocol for Life Balance
Liquid Vitamin D3
D3 (cholecalciferol) · Liquid
80Good qualityCountry not stated2.1¢per 25 µg
81% more
- Pack
- $15.4529.6 ml (1 fl oz)370 servings
- Vitamin D per serving
- 50 µgin 0.08 ml
- Pack lasts
- 370 daysif you take 25 µg a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 25
21st Century
Vitamin D3, 50 mcg (2,000 IU)
D3 (cholecalciferol) · Softgels
80Good qualityCountry not stated2.1¢per 25 µg
82% more
- Pack
- $10.49250 softgels
- Vitamin D per serving
- 50 µgin 1 softgel
- Pack lasts
- 250 daysif you take 1 softgel (50 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 26
21st Century
Vitamin D3 50 mcg
D3 (cholecalciferol) · Softgels
80Good qualityCountry not stated2.1¢per 25 µg
82% more
- Pack
- $10.49250 softgels
- Vitamin D per serving
- 50 µgin 1 softgel
- Pack lasts
- 250 daysif you take 1 softgel (50 µg) a day
21stcenturyvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 27
Carlson
Vitamin D3, 100 mcg (4,000 IU)
D3 (cholecalciferol) · Softgels
80Good qualityCountry not stated2.1¢per 25 µg
84% more
- Pack
- $30.60360 softgels
- Vitamin D per serving
- 100 µgin 1 softgel
- Pack lasts
- 360 daysif you take 1 softgel (100 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 28
NOW Foods
Vitamin D3, 2,000 IU
D3 (cholecalciferol) · Softgels
80Good qualityMade in USA2.2¢per 25 µg
87% more
- Pack
- $5.18120 softgels
- Vitamin D per serving
- 50 µgin 1 softgel
- Pack lasts
- 120 daysif you take 1 softgel (50 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 29
NOW Foods
Vitamin D3, 2,500 IU
D3 (cholecalciferol) · Softgels
80Good qualityMade in USA2.2¢per 25 µg
88% more
- Pack
- $9.78180 softgels
- Vitamin D per serving
- 62.5 µgin 1 softgel
- Pack lasts
- 180 daysif you take 1 softgel (62.5 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 30
21st Century
Vitamin D3
D3 (cholecalciferol) · Tablets
80Good qualityCountry not stated2.2¢per 25 µg
91% more
- Pack
- $10.99500 tablets
- Vitamin D per serving
- 25 µgin 1 tablet
- Pack lasts
- 500 daysif you take 1 tablet (25 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 31
21st Century
Vitamin D3 25 mcg
D3 (cholecalciferol) · Tablets
80Good qualityCountry not stated2.2¢per 25 µg
91% more
- Pack
- $10.99500 tablets
- Vitamin D per serving
- 25 µgin 1 tablet
- Pack lasts
- 500 daysif you take 1 tablet (25 µg) a day
21stcenturyvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 32
Vitamatic
Vegan Vitamin D2, 60 mcg (2,400 IU)
D2 (ergocalciferol) · Tablets
75Good qualityCountry not stated2.3¢per 25 µg
101% more
- Pack
- $9.99180 tablets
- Vitamin D per serving
- 60 µgin 1 tablet
- Pack lasts
- 180 daysif you take 1 tablet (60 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 33
Vitamatic
Vitamin D2 2400 IU (60 mcg)
D2 (ergocalciferol) · Tablets
75Good qualityCountry not stated2.3¢per 25 µg
101% more
- Pack
- $9.99180 tablets
- Vitamin D per serving
- 60 µgin 1 tablet
- Pack lasts
- 180 daysif you take 1 tablet (60 µg) a day
vitamaticusa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 34
Bluebonnet Nutrition
Liquid Vitamin D3 Drops 25 mcg (1000 IU)
D3 (cholecalciferol) · Liquid
80Good qualityCountry not stated2.3¢per 25 µg
102% more
- Pack
- $20.95900 servings
- Vitamin D per serving
- 25 µg
- Pack lasts
- 900 daysif you take 25 µg a day
bluebonnetnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 35
NatureWise
Vitamin D3, 50 mcg (2,000 IU)
D3 (cholecalciferol) · Softgels
80Good qualityMade in USA2.4¢per 25 µg
107% more
- Pack
- $17.22360 softgels
- Vitamin D per serving
- 50 µgin 1 softgel
- Pack lasts
- 360 daysif you take 1 softgel (50 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 36
Swanson Vitamins
Vitamin D3, Higher Potency, 50 mcg (2,000 IU)
D3 (cholecalciferol) · Capsules
80Good qualityCountry not stated2.4¢per 25 µg
108% more
- Pack
- $11.99250 capsules
- Vitamin D per serving
- 50 µgin 1 capsule
- Pack lasts
- 250 daysif you take 1 capsule (50 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 37
Swanson Vitamins
Vitamin D3 - Higher Potency
D3 (cholecalciferol) · Capsules
80Good qualityCountry not stated2.4¢per 25 µg
108% more
- Pack
- $11.99250 capsules
- Vitamin D per serving
- 50 µgin 1 capsule
- Pack lasts
- 250 daysif you take 1 capsule (50 µg) a day
swansonvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 38
Vitacost
Vitamin D3 Mini Gels, 25 mcg (1,000 IU)
D3 (cholecalciferol) · Softgels
80Good qualityCountry not stated2.4¢per 25 µg
109% more
- Pack
- $8.79365 softgels
- Vitamin D per serving
- 25 µgin 1 softgel
- Pack lasts
- 365 daysif you take 1 softgel (25 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 39
Vitacost
Vitamin D3, 50 mcg (2,000 IU)
D3 (cholecalciferol) · Capsules
80Good qualityCountry not stated2.4¢per 25 µg
110% more
- Pack
- $9.67200 capsules
- Vitamin D per serving
- 50 µgin 1 capsule
- Pack lasts
- 200 daysif you take 1 capsule (50 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 40
Nature's Bounty
D3, 50 mcg (2,000 IU)
D3 (cholecalciferol) · Softgels
80Good qualityMade in USA2.5¢per 25 µg
113% more
- Pack
- $17.17350 softgels
- Vitamin D per serving
- 50 µgin 1 softgel
- Pack lasts
- 350 daysif you take 1 softgel (50 µg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
What amount is typical?
15–20 µg
recommended a day for adults – 600–800 IU (NIH)
Source: NIH Office of Dietary Supplements (opens in a new tab)100 µg
upper limit a day for adults – 4,000 IU (NIH)
Source: NIH Office of Dietary Supplements (opens in a new tab)10–1,250 µg
vitamin D per serving in the 531 products we checked
Per serving, the 531 products we checked have 10–1,250 µg. Recommended: 15–20 µg. Upper limit: 100 µg.
- 232 of 531 have more than the upper limit of 100 µg vitamin D in one serving.
On the label: Labels show µg (also written mcg) and often IU. 1 µg is 40 IU, so 25 µg = 1,000 IU.
These are amounts from the sources above, not a recommendation for you. Not medical advice – ask a doctor or pharmacist what’s right for you.
Good to know
- Fact
- 6,761%more per 25 µg for the most expensive product than for the cheapest.
- Fact
- 369%more per 25 µg for the cheapest gummies than for the cheapest liquid.
Guide: Vitamin D: IU, mcg and what you really pay
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