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. Chills
  2. cold sweats
  3. confusion
  4. dizziness
  5. dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position

Incidence not known

  1. Clay-colored stools
  2. dark urine
  3. fever
  4. headache
  5. hives, itching, rash
  6. loss of appetite
  7. nausea
  8. pinpoint red or purple spots on the skin
  9. skin blisters
  10. stomach pain
  11. unpleasant breath odor
  12. unusual tiredness or weakness
  13. vomiting of blood
  14. 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. Change or problem with discharge of semen

Less common

  1. Diarrhea
  2. muscle aches
  3. sore throat
  4. stuffy or runny nose

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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Portions of this document last updated: May 01, 2024

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