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. Agitation
  2. back pain
  3. blindness
  4. blurred vision
  5. burning, numbness, tingling, or painful sensations in the hands or feet
  6. changes in speech patterns
  7. confusion
  8. decreased vision
  9. depression
  10. dizziness
  11. drowsiness
  12. eye pain
  13. fever
  14. headache
  15. irritability
  16. lack of coordination
  17. nausea
  18. seeing or hearing things that are not there
  19. seizures
  20. shakiness and unsteady walk
  21. slurred speech
  22. stiff neck or back
  23. trouble speaking
  24. unsteadiness, trembling, or other problems with muscle control or coordination
  25. unusual tiredness or weakness
  26. vomiting
  27. weakness in the arms, hands, legs, or feet

Less common

  1. Black, tarry stools
  2. blood in the urine
  3. body aches or pain
  4. burning while urinating
  5. chills
  6. clumsiness or unsteadiness
  7. difficulty with breathing
  8. ear congestion
  9. fainting
  10. feeling of pelvic pressure
  11. frequent or painful urination
  12. irregular heartbeat
  13. loss of voice
  14. nasal congestion
  15. pinpoint red spots on the skin
  16. runny nose
  17. skin rash, hives, redness, itching
  18. sneezing
  19. stomach and back pain (severe)
  20. unusual bleeding or bruising
  21. vaginal irritation, discharge, or dryness not present before taking the medicine


  1. Bleeding gums
  2. bloating
  3. chest pain
  4. constipation
  5. cough
  6. dark urine
  7. fast heartbeat
  8. indigestion
  9. loss of appetite
  10. painful or difficult urination
  11. pains in the stomach, side, or abdomen, possibly radiating to the back
  12. sore throat
  13. sores, ulcers, or white spots on the lips or in the mouth
  14. swollen glands
  15. yellow eyes or skin

Incidence not known

  1. Blistering, peeling, or loosening of the skin
  2. bloody or cloudy urine
  3. burning while urinating
  4. continuing diarrhea
  5. continuing stomach pain
  6. diarrhea
  7. feeling of warmth
  8. increased volume of pale, dilute urine
  9. joint or muscle pain
  10. loss of bladder control
  11. red skin lesions, often with a purple center
  12. red, irritated eyes
  13. redness of the face, neck, arms, and occasionally, upper chest
  14. redness of the 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. Dizziness or lightheadedness
  2. feeling of constant movement of self or surroundings
  3. heartburn
  4. sensation of spinning
  5. stomach cramps
  6. trouble sleeping
  7. weight loss


  1. Change in taste sensation
  2. congestion
  3. dry mouth
  4. pain or tenderness around the eyes and cheekbones
  5. tender, swollen glands in the neck
  6. trouble with swallowing
  7. unpleasant or sharp metallic taste
  8. voice changes

Incidence not known

  1. Decreased interest in sexual intercourse
  2. inability to have or keep an erection
  3. loss in sexual ability, desire, drive, or performance
  4. painful sexual intercourse

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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