Side Effects

Drug information provided by: IBM 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. Cold arms or legs
  2. difficult or labored breathing
  3. shortness of breath
  4. tightness in chest
  5. wheezing

Less common

  1. Chest pain or discomfort
  2. chills
  3. cold sweats
  4. confusion
  5. dizziness, faintness, or lightheadedness when getting up from lying or sitting position
  6. leg pain
  7. lightheadedness, dizziness, or fainting
  8. slow or irregular heartbeat
  9. unusual tiredness or weakness

Incidence not determined

  1. Black, tarry stools
  2. bleeding gums
  3. blood in urine or stools
  4. feeling that others are watching you or controlling your behavior
  5. feeling that others can hear your thoughts
  6. fever
  7. general feeling of discomfort, illness, or weakness
  8. paleness or cold feeling in fingertips and toes
  9. pinpoint red spots on skin
  10. seeing, hearing, or feeling things that are not there
  11. severe mood or mental changes
  12. skin irritation or rash, including rash that looks like psoriasis
  13. tingling or pain in fingers or toes when exposed to cold
  14. unusual behavior
  15. unusual bleeding or bruising

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

Symptoms of overdose

  1. Blurred vision
  2. decreased urination
  3. dry mouth
  4. increase in heart rate
  5. muscle cramps or pain
  6. numbness, tingling, pain, or weakness in hands or feet
  7. rapid breathing
  8. seizures
  9. sunken eyes
  10. sweating
  11. thirst
  12. trembling
  13. weakness and heaviness of legs
  14. wrinkled 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. Discouragement
  2. feeling sad or empty
  3. irritability
  4. lack of appetite
  5. loss of interest or pleasure
  6. tiredness
  7. trouble concentrating
  8. trouble sleeping

Less common

  1. Diarrhea
  2. feeling of constant movement of self or surroundings
  3. nausea
  4. sensation of spinning
  5. unusual drowsiness, dullness, or feeling of sluggishness

Incidence not determined

  1. Decreased interest in sexual intercourse
  2. disturbed color perception
  3. double vision
  4. hair loss, thinning of hair
  5. halos around lights
  6. headache
  7. inability to have or keep an erection
  8. loss in sexual ability, desire, drive, or performance
  9. loss of vision
  10. night blindness
  11. overbright appearance of lights
  12. pain of penis on erection
  13. tunnel vision

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: Dec. 01, 2019

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