NOW Foods Vitamin D3 10,000 IU (120 Softgels)
by NOW Foods
"10,000 IU D3 per softgel for severe deficiency — the ultra-high dose vitamin D3 with 120 softgels and 22,000+ reviews under $14"
Overview
NOW Vitamin D3 10,000 IU provides 250mcg of cholecalciferol per softgel — the highest commonly available D3 dose. This ultra-high dose is designed for individuals with severe vitamin D deficiency (serum 25(OH)D below 20 ng/mL) or those under medical supervision requiring aggressive repletion. The Endocrine Society's clinical practice guidelines recommend 50,000 IU weekly (equivalent to ~7,000 IU daily) for 8 weeks to treat deficiency, followed by maintenance dosing. The 10,000 IU dose should only be used under medical guidance with periodic blood testing — the Endocrine Society considers up to 10,000 IU daily safe for adults, but chronic use without monitoring can lead to hypercalcemia.
Key Ingredients
| Ingredient | Amount |
|---|---|
| Vitamin D3 (Cholecalciferol) | 10,000 IU (250 mcg) |
Pros & Cons
What We Like
- 120 softgels (4-month supply)
- 22,000+ reviews
- Under $14
- Ultra-high dose for deficiency
- 4.7 average rating
What Could Be Better
- 10,000 IU requires medical monitoring
- Risk of hypercalcemia if overused
- Not for maintenance dosing
- Must pair with K2
Who Is This For?
Best For
- Severe vitamin D deficiency
- Medical-supervised repletion
- Those with very low D levels
- Short-term high-dose protocols
Not Ideal For
- Maintenance supplementation
- Those without D testing
- Those not under medical care
- Those with normal D levels
Our Verdict
NOW D3 10,000 IU is the therapeutic D3 — ultra-high dose for severe deficiency under medical supervision. Essential to monitor blood levels and pair with K2; not for casual daily use without testing.
Alternatives to Consider
No direct alternatives listed for this product yet.