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.
Vitamins and supplements and minerals for hair loss, such as Vitamin C, Biotin, Niacin, Iron, Zinc and others, can be taken to treat hair issues. Supplements are particularly important and effective if you are not getting enough of these nutrients in the food you eat.