Metyrosine (Systemic)

Brand Names : Demser

Side Effects of This Medicine

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

More common

Diarrhea; drooling; trembling and shaking of hands and fingers; trouble in speaking

Less common

Anxiety; confusion; hallucinations (seeing, hearing, or feeling things that are not there); mental depression

Rare

Black, tarry stools; blood in urine or stools; unusual bleeding or bruising; muscle spasms, especially of neck and back; painful urination; pinpoint red spots on skin; restlessness; shortness of breath; shuffling walk; skin rash and itching; swelling of feet or lower legs; tic-like (jerky) movements of head, face, mouth, and neck; unusual tiredness or weakness

Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your doctor if any of the following side effects continue or are bothersome:

More common

Drowsiness

Less common

Decreased sexual ability in men; dryness of mouth; nausea, vomiting, or stomach pain; stuffy nose; swelling of breasts or unusual milk production

After you stop taking this medicine, it may still produce some side effects that need attention. During this period of time check with your doctor if you notice the following side effect:

More common

Diarrhea

Also, after you stop taking this medicine, you may have feelings of increased energy or you may have trouble sleeping. However, these effects should last only for two or three days.

Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.