My M.D. prescribed 50,000 IU vitamin D3 pills (1 per week for 3 weeks) when a blood test indicated vitamin D deficiency a few years back. It's safe for most adults, but check with your doctor to be sure. I regularly take 5,000 or 10,000 IUs daily during the winter now, even more if I think I've been exposed to a cold or flu. Better yet, get some sunshine on your skin!
My M.D. prescribed 50,000 IU vitamin D3 pills (1 per week for 3 weeks) when a blood test indicated vitamin D deficiency a few years back. It's safe for most adults, but check with your doctor to be sure. I regularly take 5,000 or 10,000 IUs daily during the winter now, even more if I think I've been exposed to a cold or flu. Better yet, get some sunshine on your skin!