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 immediately if the following side effects occur, because they may mean that you are developing a problem with blood circulation:

Less common or rare

Anxiety or confusion (severe); change in vision; chest pain; increase in blood pressure; muscle pain; pain in arms, legs, or lower back, especially if pain occurs in your calves or heels while you are walking; pale, bluish-colored, or cold hands or feet (not caused by cold temperatures and occurring together with other side effects listed in this section); red or violet-colored blisters on the skin of the hands or feet

Also check with your doctor immediately if any of the following side effects occur, because they may mean that you have taken an overdose of the medicine:

Less common or rare

Convulsions (seizures); diarrhea, nausea, vomiting, or stomach pain or bloating (severe) occurring together with other signs of overdose or of problems with blood circulation; dizziness, drowsiness, or weakness (severe), occurring together with other signs of overdose or of problems with blood circulation; fast or slow heartbeat; diarrhea; headaches, more often and/or more severe than before; problems with moving bowels, occurring together with pain or discomfort in the rectum (with rectal suppositories only); shortness of breath; unusual excitement

The following side effects may go away after a little while. Do not take any more medicine while they are present . If any of them occur together with other signs of problems with blood circulation, check with your doctor right away . Even if any of the following side effects occur without other signs of problems with blood circulation, check with your doctor if any of them continue for more than one hour :

More common

Itching of skin; coldness, numbness, or tingling in fingers, toes, or face; weakness in legs

Also, check with your doctor as soon as possible if you notice any of the following side effects:

More common

Swelling of face, fingers, feet, or lower legs

Less common or rare

Absence of pulse; blurred vision; decrease in blood pressure; lightheadedness; fainting; fever; general feeling of illness; loss of appetite; lower abdominal pain; lower back pain; pounding in the ears; rapid, weak pulse; slow or irregular heartbeat; unusual tiredness

Other side effects may occur that usually do not need medical attention. These side effects may go away after a little while. However, check with your doctor if any of the following side effects continue or are bothersome:

More common

Diarrhea, nausea, or vomiting (occurring without other signs of overdose or problems with blood circulation); dizziness or drowsiness (occurring without other signs of overdose or problems with blood circulation, especially with combinations containing dimenhydrinate, diphenhydramine, or pentobarbital); nervousness or restlessness; dryness of mouth (especially with combinations containing belladonna alkaloids, dimenhydrinate, or diphenhydramine)

Rare

Abdominal pain; difficulty in moving bowels; irregular bowel movements; rectal discomfort

After you stop taking this medicine, your body may need time to adjust. The length of time this takes depends on the amount of medicine you were taking and how long you took it. During this time check with your doctor if your headaches begin again or worsen.

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