Equipment Reference
NOW Foods
NOW Foods Vitamin D-3 5000 IU
NOW Foods Vitamin D-3 5,000 IU review — high-potency cholecalciferol softgels in extra-virgin olive oil for winter 25(OH)D repletion (pair with K2).
Cholecalciferol in olive oil — the winter D3 bottle after you test
NOW’s 5,000 IU D3 softgel in extra-virgin olive oil is one of the most-reviewed vitamin D listings on Amazon. Use it when 25(OH)D is low or winter sun is a rumor — not as a daily 5,000 IU forever without labs. Pair with Thorne D3+K2 if you want K2 in the same capsule; this bottle is D3-only on purpose.
Health Disclaimer
This content is for general informational and educational purposes only. It is not medical advice, diagnosis, or treatment. Consult a qualified healthcare provider before starting any supplement, peptide, or health protocol. Read our full health disclaimer.
Typical price: $8 – $16 USD / 240 softgels
How It Works
Vitamin D is a secosteroid hormone affecting calcium handling, immunity, and hundreds of genes. Deficiency is common indoors. Outcomes for megadose D in already-sufficient people are disappointing. Toxicity is real at chronic very high doses — this is why we say test.
Cholecalciferol
5,000 IU (125mcg) D3 from lanolin in olive oil. Fat-soluble — take with a meal that has fat.
Test, Then Dose
Maintenance for many is 1,000–2,000 IU. 5,000 IU is a repletion-style dose. Recheck 25(OH)D in 8–12 weeks.
K2 Is Separate
This SKU is not a D+K combo. Add Thorne D3/K2 or a standalone MK-7 if that is your protocol.
What You'll Experience
Repletion
Weeks 1–8No subjective ‘feel’ for many. The win is the next lab, not mood on day three.
Maintenance
After retestDrop to a lower IU or every-other-day if you overshoot 60–80 ng/mL.
Benefits
Cost and Count
Strong Evidence240 softgels at a NOW price — winter covered after you know your number.
Oil Delivery
Moderate EvidenceSoftgel in olive oil is a sane fat-soluble format.
Risks & Considerations
Hypercalcemia
high riskToo much D raises calcium. Kidney disease, sarcoid, and high-dose D need a clinician — not Reddit.
Skip the Blind 10k IU
medium riskMore is not a longer life. Recheck labs instead of stacking bottles.
Community Reviews
Synthesized consensus from Reddit, forums, and expert sources.
NOW 5,000 IU is a frequent ‘just buy this’ winter pick. The smart comments all say get a blood test.
- ·5,000 IU
- ·With fat
- ·Retest
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Read guideLast updated: 2026-09-21 · Informational only. Not medical advice. Health disclaimer.