Vitamin D3
Prices shown per 2,000 IU (50 mcg) of vitamin D3, whatever the strength of each softgel.
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Vitamin D3 buying guides
- Vitamin D3: 2,000 or 5,000 IU? Dose, K2, testing and costThe US upper limit for vitamin D is 4,000 IU a day, yet 5,000 IU is the internet default. What guidelines say, whether you need K2 or a blood test, and D3 cost per 2,000 IU.