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 any of the following side effects occur:

Rare

Dark urine; itching; light-colored stools; loss of appetite; nausea (continuing); tenderness in upper right part of abdomen; unusual drowsiness, dullness, or feeling sluggish; unusual tiredness or weakness; yellow eyes or skin

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

More common

Abdominal pain; cough; diarrhea; dizziness; dizziness or lightheadedness when getting up from a lying or sitting position; drowsiness; fainting; fever; hallucinations (seeing, hearing, or feeling things that are not there); headache; nasal congestion (stuffy nose); nausea; runny nose; sneezing; sore throat; trouble in sleeping; twitching, twisting, or other unusual body movements; vomiting

Less common

Blood in urine; chest pain; chills; confusion; falling; general feeling of discomfort or illness; hyperactivity; loss of balance control; muscle pain; troubled breathing

Rare

Agitation; bloody or cloudy urine; burning of feet; burning, prickling, or tingling sensations; chest discomfort; difficult or painful urination; difficulty in thinking or concentrating; frequent urge to urinate; irritability; joint pain, redness, or swelling; low blood pressure; muscle cramps; neck pain; stiffness

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

Constipation; dryness of mouth; excessive dreaming; increased sweating

Less common

Heartburn; gas

After you stop using this medicine, your body may need time to adjust. The length of time this takes depends on the amount of medicine you were using and how long you used it. During this period of time, check with your doctor if you notice that the following side effects occur together:

Confusion; fever; muscle rigidity

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