Question: what are the side effects of taking hair skin and nails vitamins?
Answer: Side Effects. Constipation, diarrhea, or upset stomach may occur. ...  Precautions. Before taking this product, tell your doctor or pharmacist if you are allergic to any of its ingredients; or to soy/peanut found in some brands; or if you have any other allergies. ...  Interactions. ...  Overdose.