Table 1. Treatment of vitamin D deficiency.

Vitamin D status	25–hydroxyvitamin D (end of winter)	Recommended vitamin D supplementation
Mild deficiency	30–49 nmol/L	1000–2000 IU per day
Moderate deficiency	12.5–29 nmol/L	3000–5000 IU per day (for 6–12 weeks) followed by maintenance dose of 1000–2000 IU per day
Severe deficiency	<12.5 nmol/L