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:

Less common

  1. Chest pain or discomfort
  2. decreased urine output
  3. difficult or labored breathing
  4. difficulty with swallowing
  5. dilated neck veins
  6. extreme fatigue
  7. fainting
  8. fast, slow, irregular, pounding, or racing heartbeat or pulse
  9. fever
  10. heat intolerance
  11. hives or welts, skin itching, rash, or redness
  12. irregular breathing
  13. irritability
  14. menstrual changes
  15. nausea
  16. pain or discomfort in the arms, jaw, back, or neck
  17. sweating
  18. swelling of the eyes, face, lips, throat, or tongue
  19. tightness in the chest
  20. tremors

Rare

  1. Blurred or double vision
  2. dizziness
  3. eye pain
  4. lack or slowing of normal growth in children
  5. limp or walk favoring one leg
  6. pain in the hip or knee
  7. seizures
  8. severe headache

Get emergency help immediately if any of the following symptoms of overdose occur:

Symptoms of overdose

  1. Change in consciousness
  2. cold, clammy skin
  3. confusion
  4. disorientation
  5. fast or weak pulse
  6. lightheadedness
  7. loss of consciousness
  8. sudden headache
  9. sudden loss of coordination
  10. sudden slurring of speech

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:

Less common

  1. Abdominal or stomach cramps
  2. change in appetite
  3. crying
  4. diarrhea
  5. false or unusual sense of well-being
  6. fear or nervousness
  7. feeling not well or unhappy
  8. feeling of discomfort
  9. feeling of warmth
  10. feeling things are not real
  11. feelings of suspicion and distrust
  12. hair loss
  13. headache
  14. increased appetite
  15. mental depression
  16. muscle weakness
  17. quick to react or overreact emotionally
  18. rapidly changing moods
  19. redness of the face, neck, arms, and occasionally, upper chest
  20. restlessness
  21. trouble getting pregnant
  22. trouble sitting still
  23. unusual tiredness or weakness
  24. vomiting
  25. weight gain or 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.