Side Effects

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 or nurse immediately if any of the following side effects occur:

Less common

  1. Back pain
  2. chest tightness
  3. chills
  4. fever
  5. flushing
  6. headache
  7. nausea and vomiting
  8. pale skin
  9. trouble breathing
  10. troubled breathing with exertion
  11. unusual bleeding or bruising
  12. unusual tiredness or weakness

Rare

  1. Coma
  2. confusion
  3. convulsions
  4. decreased urine output
  5. dizziness
  6. fast or irregular heartbeat
  7. increased thirst
  8. muscle pain or cramps
  9. swelling of the face, ankles, or hands

Incidence not known

  1. Bleeding gums
  2. blistering, peeling, or loosening of the skin
  3. blood in the urine or stools
  4. bloody, black, or tarry stools
  5. changes in behavior
  6. chest pain
  7. cough or hoarseness
  8. dark-colored urine
  9. decreased urine output
  10. diarrhea
  11. fainting
  12. general feeling of tiredness or weakness
  13. high fever
  14. itching
  15. joint or muscle pain
  16. light-colored stools
  17. lightheadedness
  18. lower back or side pain
  19. painful or difficult urination
  20. pinpoint red spots on the skin
  21. rapid, shallow breathing
  22. red skin lesions, often with a purple center
  23. red, irritated eyes
  24. sore throat
  25. sores, ulcers, or white spots on the lips or in the mouth
  26. stiff neck or back
  27. stomach pain, continuing
  28. swelling of the face, ankles, or hands
  29. swollen or painful glands
  30. thoughts of killing oneself
  31. tightness in the chest
  32. yellow eyes or skin

Some 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. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

  1. Sleepiness or unusual drowsiness

Less common

  1. Double vision
  2. seeing double

Incidence not known

  1. Abdominal or stomach pain
  2. burning, dry, or itching eyes
  3. diarrhea
  4. difficulty having a bowel movement (stool)
  5. discharge, excessive tearing
  6. dry mouth
  7. loss of appetite
  8. redness, pain, or swelling of the eye, eyelid, or inner lining of the eyelid
  9. redness, swelling, or soreness of the tongue
  10. swelling or inflammation of the mouth
  11. weight loss

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

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.