All medications have side effects. Hives, constipation, dry mouth, and headaches are common side effects in a lot of drugs. But in some cases certain side effect combinations can indicate an allergic reaction instead of being a side effect. Be sure to read the specific warnings on the drug to be sure.
Vitamin A. Vitamin A will help your hair and skin health. This antioxidant vitamin helps normalize cell growth, maintain healthy skin, form collagen and increase your cell renewal rate, according to the National Institutes of Health.
You can get the most Vitamin C from citrus fruits, red and green peppers, cauliflower and tomato. Vitamins B2, B5 and B12 are all essential for healthy skin and promoting skin cell growth. Another B Vitamin which is vital for hair and nail health is biotin.