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.
Hair vitamins can be used to promote faster growing, healthier hair. A healthy body is the ideal environment for healthy hair to thrive; a strong metabolism and immune system are key factors for growing healthy hair fast. The following specific vitamins promote faster hair growth:1  Biotin promotes cell growth, the production of fatty acids, and the metabolism of fats and amino acids. 2  Niacin (Vitamin B3) promotes scalp circulation. 3  Pantothenic Acid (Vitamin B5) prevents hair loss. Niacin (Vitamin B3) promotes scalp circulation. 2  Pantothenic Acid (Vitamin B5) prevents hair loss. 3  Vitamin A is an antioxidant that helps produce healthy sebum in the scalp. 4  MSM lengthens the natural hair growth phase.