For optimal sleep take vitamin D3 2,000, to 5,000 I.U. international units, daily.
Above upon recomendation of DR. Edward Lichten. www.usdoctor.com
Taking 2,000 to 5,000 I.U. of D3daily, toxicity is rare and serum D blood samples can be followed until an adequate level is reached.
Dr. E. Lichten source---- Textbook of Bioidentical Hormones.
