Vitamin D3 1000 IU
Life Extension · Supplements · 1000 IU · D3 softgel
4.63rd party testedstrong evidence
7.3of 10
where to buy · 2 sellersfrom S$14S$0.06 per serving
Good for: immunity, healthy aging. Weaker case for energy.
The score explained
evidence, testing and value, weighed before price
Why 7.3 of 10: Provisional: strong ingredient evidence, low-dose niche.
what’s good
- Gentle dose for maintenance or stacking
- Trusted research-focused brand
- Very cheap
worth knowing
- Too low to fix a deficiency on its own
- Most people wanting one pill prefer 2000+ IU
what the evidence says
Identical conditional evidence to the rest of the category; the only product-level question is dose. 1000 IU daily nudges levels modestly and suits people already near range or combining sources, but trials correcting deficiency generally used more. The brand's testing record is good.
Plain-language assessment of the human evidence. No cherry-picked citations.
reviews
4.6· 2,100 reviews, aggregated
Most reviewers take it for immunity and report it doing its job quietly. Ratings cluster around 4.6 stars across retailer sites, with few complaints beyond shipping.
immunityeasy to tolerategreat value
AI summary of public reviews
Stack this with
TestingMinmed Vitamin D TestBoth target immunity. Minmed Vitamin D Test gives you a baseline for immunity before you spend more on fixes.
SupplementsCalifornia Gold Nutrition Vitamin D3 2000 IUBoth target immunity. California Gold Nutrition Vitamin D3 2000 IU covers the nutrient side of immunity, a cheap daily base under everything else you do.
CoachesUFIT Personal TrainingBoth target healthy aging. UFIT Personal Training keeps the plan honest; accountability is what makes healthy aging habits stick.