What some symptoms of vitamin d deficiency? how much vitamin d is healthy to take as a supplement?

Symptoms are inconsistent and usually are muscle and bone aches. Visit this site for info: https://my.clevelandclinic.org/health/articles/15050-vitamin-d--vitamin-d-deficiency You can safely take up to 4000 units of Vitamin D3/day. Usually 2000 units/day is sufficient.

Chronic use of sunblock appears to be a common cause of Vitamin D deficiency, and exposure to sunshine is still an excellent facilitator of stabilization. Oral daily or once weekly approaches will help raise level, and 4-5,000 IU daily of D-3 should allow reaching goal of 50-70 ng/ml within 3-4 months. Have your doctor check serum levels.