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. Bloating or swelling of the face, arms, hands, lower legs, or feet
  2. bloody urine
  3. blurred vision
  4. chest pain
  5. confusion
  6. convulsions
  7. decreased frequency or amount of urine
  8. dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  9. fast or irregular heartbeat
  10. loss of appetite
  11. lower back or side pain
  12. muscle pain or cramps
  13. muscle spasms (tetany) or twitching
  14. numbness or tingling in the hands, feet, or lips
  15. seizures
  16. severe nausea or vomiting
  17. sweating
  18. tightness in the chest
  19. tingling of the hands or feet
  20. trembling
  21. trouble breathing
  22. unusual tiredness or weakness

Less common or rare

  1. Cough or hoarseness
  2. dark urine
  3. fever with or without chills
  4. hives, itching, or rash
  5. irritation
  6. joint pain, stiffness, or swelling
  7. light-colored stools
  8. red, swollen skin
  9. sore throat
  10. sores, ulcers, or white spots on the lips or in the mouth
  11. stomach pain
  12. unusual bleeding or bruising
  13. upper right abdominal or stomach pain
  14. yellow eyes and skin

Incidence not known

  1. Blistering, peeling, or loosening of the skin
  2. chills
  3. diarrhea
  4. red skin lesions, often with a purple center
  5. red, irritated eyes

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. Acid or sour stomach
  2. anxiety
  3. back pain
  4. headache
  5. heartburn or indigestion
  6. seeing, hearing, or feeling things that are not there
  7. stomach discomfort or upset
  8. trouble sleeping
  9. unusual excitement, nervousness, or restlessness

Less common or rare

  1. Continuing ringing or buzzing or other unexplained noise in the ears
  2. decreased vision
  3. eye pain
  4. feeling of constant movement of self or surroundings
  5. hair loss or thinning of the hair
  6. hearing loss
  7. sensation of spinning

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.