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. Fever

Less common

  1. Body aches or pain
  2. chills
  3. cough
  4. diarrhea
  5. difficulty with breathing
  6. ear congestion
  7. general feeling of discomfort or illness
  8. headache
  9. joint pain
  10. loss of appetite
  11. loss of voice
  12. nasal congestion
  13. nausea
  14. runny nose
  15. shivering
  16. skin rash or itching
  17. sneezing
  18. sore throat
  19. sweating
  20. trouble with sleeping
  21. unusual tiredness or weakness
  22. upper abdominal or stomach pain
  23. vomiting


  1. Dark urine
  2. difficulty with swallowing
  3. pale skin
  4. pale stools
  5. redness, blistering, peeling, or loosening of the skin
  6. stomach pain
  7. unusual bleeding or bruising
  8. yellow skin or eyes

Incidence not known

  1. Black, tarry stools
  2. bleeding gums
  3. bloating
  4. blood in the urine or stools
  5. chest pain
  6. constipation
  7. cough or hoarseness
  8. dizziness
  9. fast heartbeat
  10. feeling of discomfort
  11. flu-like symptoms
  12. general feeling of tiredness or weakness
  13. hair loss
  14. high fever
  15. hives
  16. indigestion
  17. inflammation of the joints
  18. large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
  19. light-colored stools
  20. lower back or side pain
  21. muscle aches
  22. painful or difficult urination
  23. pains in the stomach, side, or abdomen, possibly radiating to the back
  24. persistent loss of appetite
  25. pinpoint red spots on the skin
  26. puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  27. red skin lesions, often with a purple center
  28. red, irritated eyes
  29. red, scaling, or crusted skin
  30. sores, ulcers, or white spots on the lips or in the mouth
  31. sores, welting, or blisters
  32. stomach pain, continuing
  33. swollen glands
  34. swollen lymph glands
  35. tightness in the chest
  36. troubled breathing with exertion
  37. ulcers, sores, or white spots in the mouth
  38. unexplained bleeding or bruising

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. Stomach pain (mild)

Less common

  1. Acid or sour stomach
  2. bad, unusual, or unpleasant (after) taste
  3. belching
  4. change of taste or loss of taste
  5. heartburn
  6. toothache

Incidence not known

  1. Decreased vision
  2. difficulty with moving
  3. discouragement
  4. feeling sad or empty
  5. irritability
  6. lack of appetite
  7. loss of interest or pleasure
  8. loss of sense of smell
  9. muscle cramps or spasms
  10. muscle stiffness
  11. tiredness
  12. trouble concentrating

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.

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