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. Blurred vision
  2. chest pain or discomfort
  3. confusion
  4. dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  5. slow or irregular heartbeat
  6. sweating
  7. unusual tiredness or weakness

Less common

  1. Bloating or swelling of the face, arms, hands, lower legs, or feet
  2. chest tightness
  3. cough
  4. decreased urine output
  5. difficult or labored breathing
  6. difficulty with speaking
  7. dilated neck veins
  8. disturbed color perception
  9. double vision
  10. fast, pounding, or racing heartbeat or pulse
  11. halos around lights
  12. headache
  13. inability to move the arms, legs, or facial muscles
  14. inability to speak
  15. irregular breathing
  16. loss of vision
  17. night blindness
  18. noisy breathing
  19. overbright appearance of lights
  20. pain, tension, and weakness upon walking that subsides during periods of rest
  21. paleness or cold feeling in the fingertips and toes
  22. rapid weight gain
  23. seeing, hearing, or feeling things that are not there
  24. short-term memory loss
  25. slow speech
  26. swelling of the face, fingers, feet, or lower legs
  27. tingling of the hands or feet
  28. tingling or pain in the fingers or toes when exposed to cold temperatures
  29. trouble breathing
  30. tunnel vision
  31. unusual weight gain or loss


  1. Bluish color of the skin of the fingers or toes
  2. chills
  3. clay-colored stools
  4. continuing loss of appetite
  5. continuing or severe abdominal or stomach pain
  6. continuing or severe nausea and vomiting
  7. dark urine
  8. difficulty with moving
  9. fever
  10. hoarseness
  11. increased frequency of urination
  12. itching skin
  13. light-colored stools
  14. lower back or side pain
  15. muscle pain or stiffness
  16. numbness of the fingers or toes
  17. pain, swelling, or redness in the joints
  18. rash
  19. sore throat
  20. sores, ulcers, or white spots on the lips or in the mouth
  21. unpleasant breath odor
  22. unusual bleeding or bruising
  23. upper right abdominal or stomach pain
  24. vomiting of blood
  25. weakness
  26. yellow eyes and skin

Incidence not known

  1. Anxiety
  2. black, tarry stools
  3. bleeding gums
  4. blood in the urine or stools
  5. burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
  6. cold sweats
  7. coma
  8. cool, pale skin
  9. cool, sweaty skin
  10. increased hunger
  11. nausea
  12. nervousness
  13. nightmares
  14. pinpoint red spots on the skin
  15. seizures
  16. shakiness
  17. slurred speech

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

Symptoms of overdose

  1. Bluish color of the fingernails, lips, skin, palms, or nail beds
  2. change in consciousness
  3. loss of consciousness
  4. no blood pressure or pulse
  5. stopping of the heart
  6. very drowsy or sleepy

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. Belching
  2. bloated feeling
  3. decreased interest in sexual intercourse
  4. difficulty having a bowel movement
  5. discouragement
  6. dry mouth
  7. excess air or gas in stomach or bowels
  8. feeling of constant movement of self or surroundings
  9. feeling of fullness
  10. feeling of indigestion
  11. feeling sad or empty
  12. inability to have or keep an erection
  13. irritability
  14. loss in sexual ability, desire, drive, or performance
  15. loss of interest or pleasure
  16. nightmares
  17. pain in the chest below the breastbone
  18. passing gas
  19. redness or other discoloration of the skin
  20. runny or stuffy nose
  21. sensation of spinning
  22. sneezing
  23. tiredness
  24. trouble concentrating
  25. trouble sleeping


  1. Bone pain
  2. continuing ringing or buzzing or other unexplained noise in the ears
  3. dry eyes
  4. hair loss or thinning of the hair
  5. hearing loss
  6. increased sensitivity of the skin to sunlight
  7. pain in the penis on erection
  8. severe sunburn

Incidence not known

  1. Change in taste or bad, unusual, or unpleasant (after) taste
  2. fear or nervousness
  3. hives or welts

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.