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. Decreased coordination
  2. mental confusion
  3. nervousness
  4. slurred speech
  5. trouble with breathing, speaking, or swallowing
  6. unsteadiness, trembling, or other problems with muscle control or coordination


  1. Inability to move the eyes
  2. increased blinking or spasms of the eyelid
  3. shakiness and unsteady walk
  4. shakiness in the legs, arms, hands, or feet
  5. sticking out of the tongue
  6. trembling or shaking of the hands or feet
  7. twitching, twisting, or uncontrolled repetitive movements of the tongue, lips, face, arms, or legs
  8. uncontrolled twisting movements of the neck, trunk, arms, or legs
  9. unusual facial expressions

Incidence not known

  1. Bleeding gums
  2. blistering, peeling, or loosening of the skin
  3. blisters, hives, itching, skin rash
  4. bloating of the abdomen or stomach
  5. blood in the urine or stools
  6. bloody, black, or tarry stools
  7. chest pain or discomfort
  8. chills
  9. cough
  10. dark urine
  11. diarrhea
  12. difficulty with moving
  13. fainting spells
  14. fever with or without chills
  15. general feeling of discomfort or illness
  16. hair loss
  17. headache
  18. high fever
  19. hoarseness
  20. irritation in the mouth
  21. joint or muscle pain
  22. light-colored stools
  23. lightheadedness or dizziness
  24. lower back or side pain
  25. muscle stiffness
  26. nausea
  27. numbness, tingling, or pain in the hands or feet
  28. painful or difficult urination
  29. pale skin
  30. pinpoint red spots on the skin
  31. red skin lesions, often with a purple center
  32. red, irritated eyes
  33. redness and swelling of the gums
  34. slow or irregular heartbeat
  35. sore throat
  36. sores, ulcers, or white spots on the lips or in the mouth
  37. stomach pain
  38. swollen, painful, or tender lymph glands in the neck, armpit, or groin
  39. unusual bleeding or bruising
  40. unusual tiredness or weakness
  41. upper right abdominal or stomach pain
  42. vomiting
  43. weight loss
  44. 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. Trouble sleeping
  2. uncontrolled eye movements

Incidence not known

  1. Difficulty having a bowel movement
  2. enlarged lips
  3. feeling of constant movement of self or surroundings
  4. increased hair growth on the forehead, back, arms, or legs
  5. pain of the penis on erection
  6. sensation of spinning

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.