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 C. Vitamin C is good for your hair growth and healthy skin. Vitamin C may help your skin look younger, according to the Mayo Clinic. Vitamin C plays an essential role in forming collagen. Collagen, a protein, stimulates skin production, according to the National Institutes of Health.
Silicon is present in hair and nails. Clinical trials have also found a benefit to silicon supplementation on hair brittleness. Zinc concentrations are high in the skin and deficiency of this mineral leads to dermatitis and other skin disorders. Thiamine [vitamin B1] supports normal growth and development of all tissues in the body. It is one of the best best vitamins for hair skin and nails. In addition, it appears to have an antioxidant role which is particularly effective in the skin. Oxidative damage can lead to premature aging of the skin, which can be identified by increased wrinkling, ragging and sunspots.