How much vitamin d do you need to take if you're vitamin d deficient?

2000-5000 units. Make sure you get a level pre and post supplementation after 3 months. Aim for a level of 50-70 for optimal health.
Varies. Individuals with normal intestinal absortion function will need to take 2000 to 5000 iu daily for 6-12 weeks. However, individuals with malabsorption or renal failure requires much higher dose, .