Stronger bones and steadier immunity.
Supports healthy bones and teeth, everyday immune function, muscle strength and a settled mood. Most of us fall short of the sunlight we would need, and this is the same form your skin makes when it gets it.
Premium quality. Made in the USA.
Clinically researched doses.
Every batch lab-tested in the USA — view the Certificate of Analysis.
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Welcome Kit — arrives with first order
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$30.00FREE
8 WAYS TO FEEL WELL EVERYDAY (EBOOK)
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Welcome Kit — arrives with first order
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$30.00FREE
8 WAYS TO FEEL WELL EVERYDAY (EBOOK)
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Couldn't load pickup availability
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Free shipping on every order
Free shipping. Dispatched within 2 business days
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Easy returns
30 days on unopened bottles
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Free shipping on every order. Dispatched from our American fulfillment center within 2 business days.
Returns are accepted within 30 days of delivery on unopened bottles with the safety seal intact. Full details in our Refund Policy and Shipping Policy.
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Vitamin D-3 1,500 IU delivers cholecalciferol, the same form your skin makes from sunlight and the form that raises blood levels most efficiently. One small tablet a day.
Very little food carries meaningful vitamin D, and skin production falls with latitude, season, sunscreen and age. For most American adults through the winter, a daily D-3 is the practical way to hold a healthy level.
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One tablet daily, with a meal. Vitamin D is fat soluble, so it absorbs best alongside food that contains some fat. Each bottle holds 100 tablets. Suitable for daily use.
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Vitamin D supports normal immune system function, which is the reason interest in it climbs every winter. It supports the absorption and use of calcium and phosphorus, and the maintenance of normal bones and teeth. It supports the maintenance of normal muscle function, including the strength and balance that matter more with every decade. It also plays a role in the process of cell division. At 1,500 IU this is a maintenance dose, sized for daily use.
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Sourced for maximum activity and formulated for genuine synergy, never for a label. Pressed into tablets and made in the USA. Every lot is tested by an independent laboratory for identity, potency, heavy metals and microbiology before it is released. No proprietary blends and no hidden fillers.
Subscription & cancellation
3-Month Supply
Pay once for a full 3-month supply. Renews every 3 months. Cancel anytime.
1-Month Supply
Ships and bills every month. Cancel anytime.
Read full Terms of Service here.
VITAMIN D-3 1,500 IU
All American Premium Vitamins are rigorously tested in third-party US laboratories. Supplements undergo potency, microbiology and heavy metal tests.
Lab Results
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We value your trust in our product's quality and would like to provide you with access to its testing results. Below you can view the testing information specific to your batch of product.
Us vs Other Brands
Vitamin D is sold in doses that run from token to reckless. Under 1,000 IU rarely moves a blood level. Ten thousand IU is a clinical decision, not a shelf decision. We chose 1,500 IU of cholecalciferol, a maintenance dose an adult can take every day without thinking about it, and we publish the assay that proves it is in the tablet.
- 1,500 IU of cholecalciferol
- The D-3 form, not D-2
- Sized for daily maintenance
- Supports immunity, bones and muscles
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Other Brands -
Cholecalciferol (D-3) form
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Honest maintenance dose
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Potency verified by assay
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Third party lab tested
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Made in the USA
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No proprietary blends
The Dose on the Panel
Vitamin D is potent in microgram quantities, which is exactly why the assay matters more than the marketing. Identity confirms the tablet contains cholecalciferol rather than the weaker D-2 form. Assay confirms the 1,500 IU on the panel is the 1,500 IU in the tablet, neither short nor over. Heavy metals and microbiology are cleared on the same lot, and the certificate carries the number on the base of your bottle.
View Lab Results
Complete Your Routine
Common Questions
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D-3, cholecalciferol, is the form your skin makes from sunlight. D-2, ergocalciferol, comes from plant and fungal sources. Both raise vitamin D levels, but D-3 raises them further and holds them longer, which is why we use it.
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Yes. Vitamin D is fat soluble, so it absorbs considerably better when it arrives with a meal that contains some fat. Breakfast or dinner both work. An empty stomach wastes part of the dose.
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Usually, but add up your total. Many multivitamins already contain vitamin D, and the amounts stack. If you take both, check the panels, and speak with your doctor if your combined daily intake climbs well past a maintenance level.
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That depends on how much midday sun reaches bare skin, and on your latitude, your skin tone, your age and your sunscreen. Many people hold a healthy level through summer and drop through winter. A blood test is the only way to know rather than guess.