Centrum Silver is used for preventing or treating a vitamin deficiency, according to WebMD. A vitamin deficiency can be caused by pregnancy, a poor diet or certain illnesses. Vitamins are also important for staying healthy and for body development.
Centrum Silver may cause an upset stomach, diarrhea or constipation, states WebMD. These side effects usually subside after the body becomes accustomed to the vitamins, but a physician needs to be contacted if the symptoms continue or get worse.
Some people are allergic to Centrum Silver, notes WebMD. Signs of an allergic reaction include difficulty breathing and dizziness. An allergic reaction may cause a rash or swelling, usually around the face or mouth area.