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 immediately if any of the following side effects occur:

More common

  1. Anxiety
  2. blurred vision
  3. chills
  4. cold sweats
  5. coma
  6. confusion
  7. cool, pale skin
  8. depression
  9. dizziness
  10. fast heartbeat
  11. headache
  12. increased hunger
  13. nausea
  14. nightmares
  15. seizures
  16. shakiness
  17. slurred speech
  18. unusual tiredness or weakness

Less common

  1. Bladder pain
  2. bloody or cloudy urine
  3. difficult, burning, or painful urination
  4. frequent urge to urinate
  5. lower back or side pain

Incidence not known

  1. Back, leg, or stomach pains
  2. bleeding gums
  3. blistering, peeling, or loosening of the skin
  4. bloating
  5. clay-colored stools
  6. constipation
  7. cough
  8. darkened urine
  9. diarrhea
  10. difficulty with breathing
  11. fever
  12. general body swelling
  13. general tiredness and weakness
  14. indigestion
  15. itching or rash
  16. joint or muscle pain
  17. light-colored stools
  18. loss of appetite
  19. nosebleeds
  20. pains in the side, or abdomen, possibly radiating to the back
  21. pale skin
  22. red skin lesions, often with a purple center
  23. red, irritated eyes
  24. sore throat
  25. sores, ulcers, or white spots in the mouth or on the lips
  26. unpleasant breath odor
  27. upper right abdominal or stomach pain
  28. vomiting
  29. vomiting of blood
  30. 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. Body aches or pain
  2. difficulty with moving
  3. ear congestion
  4. loss of voice
  5. muscle stiffness
  6. pain in the joints
  7. pain or tenderness around the eyes and cheekbones
  8. sneezing
  9. sore throat
  10. stuffy or runny nose
  11. tightness of the chest

Less common

  1. Acid or sour stomach
  2. belching
  3. burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
  4. cough producing mucus
  5. heartburn
  6. indigestion
  7. weight gain

Incidence not known

  1. Hair loss or thinning of the hair

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.