Nature Made Vitamin D3 Tablets 1000 IU
- Form: Tablet
- Supplement Type: Vitamin D3
- Diet: Gluten Free
- Allergens: Gluten Free
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A plain, gluten free D3 tablet whose main advantage is a near full year's supply in one bottle at a standard 1000 IU maintenance dose.
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ASIN: B004GJVD20Category: Vitamin D Supplements
Overview
Nature Made Vitamin D3 1000 IU (25 mcg) comes as 300 small tablets, roughly a 300-day supply at one per day. It is gluten free and formulated to support bone, teeth, muscle and immune health.
D3, or cholecalciferol, is the same form of vitamin D the body makes from sun exposure, and it is generally regarded as more effective at raising blood levels than D2. This bottle's main selling point is quantity: 300 tablets means most buyers will not need to reorder within the year.
- 1000 IU (25 mcg) D3 per tablet
- 300 tablets, 300-day supply
- Gluten free
- Supports bone, teeth, muscle and immune health
Who it's for
Fits adults who want a simple daily maintenance dose of vitamin D and prefer buying in bulk rather than restocking every month or two. Less suited to anyone whose doctor has recommended a higher dose for a diagnosed deficiency.
Pros and cons
- 300 tablets, near a year's supply
- Gluten free formula
- Standard 1000 IU maintenance dose
- Plain unflavored tablet, no extras
- 1000 IU may be low for correcting deficiency
- No review data available for this listing
Performance notes
Cholecalciferol (D3) is converted by the liver and kidneys into the active form the body uses for calcium absorption and immune function, the same pathway triggered by sunlight on skin.
Specifications
| Brand | Nature Made |
|---|---|
| Form | Tablet |
| Supplement Type | Vitamin D3 |
| Diet | Gluten Free |
| Allergens | Gluten Free |
| Count | 300 |
| Flavor | Unflavored |
| Benefits | Bone Support, Immune System Support |
Frequently asked questions
How long does one bottle of Nature Made Vitamin D3 1000 IU last?
At one tablet a day, 300 tablets covers roughly 300 days.
Is this D3 or D2?
It is D3 (cholecalciferol), listed at 1000 IU (25 mcg) per tablet.
Is Nature Made Vitamin D3 gluten free?
Yes, the listing states the formula is gluten free.