Hi doses of Vitamin D3 can have side effects, headaches, nausea, lethargy, and even kidney stones. That being said I personally take 5-10 thousand IU per day. My wife takes it also and has her Vit D levels checked by her Ob-gyn who has had her take it for 20 years. He is a big believer in the Vitamin D, and says many women are low on it. Her levels have always been ok.
Hi doses of Vitamin D3 can have side effects, headaches, nausea, lethargy, and even kidney stones. That being said I personally take 5-10 thousand IU per day. My wife takes it also and has her Vit D levels checked by her Ob-gyn who has had her take it for 20 years. He is a big believer in the Vitamin D, and says many women are low on it. Her levels have always been ok.