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:

Incidence not known

  1. Blurred vision
  2. chest pain or discomfort
  3. confusion
  4. constricted, pinpoint, or small pupils (black part of the eye)
  5. difficult or painful urination
  6. difficult or troubled breathing
  7. difficulty with sleeping
  8. disorientation
  9. double vision
  10. drowsiness or sleepiness
  11. fast, pounding, or irregular heartbeat or pulse
  12. frequent urge to urinate
  13. hallucinations
  14. irregular, fast or slow, or shallow breathing
  15. noisy breathing
  16. pale or blue lips, fingernails, or skin
  17. slow or irregular heartbeat
  18. seeing double
  19. seeing, hearing, or feeling things that are not there
  20. tightness in the chest
  21. unconsciousness
  22. unusual tiredness or weakness
  23. very slow breathing

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

Symptoms of overdose

  1. Bigger, dilated, or enlarged pupils (black part of the eye)
  2. cold, clammy skin
  3. increased sensitivity of the eyes to light
  4. no muscle tone or movement
  5. unconsciousness
  6. very slow heartbeat

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:

Incidence not known

  1. Abdominal or stomach cramps or pain
  2. bloating
  3. chills
  4. cold sweats
  5. constipation
  6. cough
  7. decrease in frequency of urination
  8. decrease in urine volume
  9. diarrhea
  10. difficulty in passing urine (dribbling)
  11. dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  12. dry mouth
  13. flushing
  14. headache
  15. lethargy
  16. lightheadedness
  17. loss of appetite
  18. mood or other mental changes
  19. nausea
  20. restlessness
  21. sleepiness or unusual drowsiness
  22. skin rash, hives, itching, or redness
  23. sweating
  24. swelling or puffiness of the face
  25. unusual tiredness
  26. vomiting
  27. 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.