Side Effects

Drug information provided by: Merative, Micromedex®

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. Change or problem with discharge of semen
  2. decreased interest in sexual intercourse
  3. inability to have or keep an erection
  4. lack or loss of strength
  5. loss in sexual ability, desire, drive, or performance
  6. severe headache
  7. sweating

Less common

  1. Blurred vision
  2. chest pain
  3. delayed or inability to have an orgasm
  4. fast or irregular heartbeat
  5. mood or mental changes
  6. ringing or buzzing in the ears
  7. suicidal thoughts

Rare

  1. Actions that are out of control
  2. high fever
  3. irritability
  4. itching or skin rash
  5. lightheadedness or fainting, especially when getting up suddenly from a sitting or lying position
  6. menstrual changes
  7. nervousness
  8. problems with urinating or holding urine
  9. seizures
  10. severe muscle stiffness
  11. talking, feeling, and acting with excitement that you cannot control
  12. trouble breathing
  13. unusually pale skin

Incidence not known

  1. Agitation
  2. bloody, black, or tarry stools
  3. bloody stool or urine
  4. dark urine
  5. decreased frequency or amount of urine
  6. diarrhea
  7. drowsiness
  8. fever
  9. general feeling of tiredness or weakness
  10. headache
  11. increased thirst
  12. light-colored stools
  13. muscle cramps, spasms, or pain
  14. nausea or vomiting
  15. nosebleeds
  16. overactive reflexes
  17. poor coordination
  18. red or purple spots on the skin
  19. restlessness
  20. shivering
  21. stomach pain on the upper right side
  22. swelling of the face, lower legs, ankles, hands, or fingers
  23. trembling or shaking that is hard to control
  24. twitching
  25. unusual bruising
  26. unusual tiredness or weakness
  27. vomiting of blood or material that looks like coffee grounds
  28. 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. Abnormal dreams
  2. chills
  3. constipation
  4. decrease in sexual desire or ability
  5. diarrhea
  6. dry mouth
  7. heartburn
  8. increased sweating
  9. loss of appetite
  10. nausea
  11. stomach pain or gas
  12. stuffy or runny nose
  13. tingling, burning, or prickly sensations
  14. trouble sleeping
  15. vomiting
  16. weight loss

Less common

  1. Change in taste
  2. muscle tension
  3. yawning

Incidence not known

  1. Decrease in smell
  2. loss of sense of smell
  3. night sweats

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.

Portions of this document last updated: April 01, 2024

Copyright: © Merative US L.P. 1973, 2024. All rights reserved. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes.