According to integrative medicine doctor Erica Schwartz, MD, up to 400 milligrams of caffeine ... with a dosage of vitamin D3 in the range of 2,000 to 5,000 IU daily. The only way to determine ...

This bottle from Nature Made contains a 100-day supply of their vitamin C tablets, each of which contains 1000 mg of the supplement. The brand recommends that adults take one tablet per day with a ...