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:

Less common

  1. Fever or chills
  2. unusual feeling of discomfort or weakness


  1. Black, tarry stools
  2. blood in urine or stools
  3. cough or hoarseness
  4. lower back or side pain
  5. painful or difficult urination
  6. pinpoint red spots on skin
  7. unusual bleeding or bruising

Check with your doctor as soon as possible if any of the following side effects occur:

Less common

  1. Sores in mouth and on lips


  1. Blurred vision
  2. confusion
  3. convulsions (seizures)
  4. lip smacking or puffing
  5. numbness, tingling, or pain in face, hands, or feet
  6. paranoia (feelings of persecution)
  7. puffing of cheeks
  8. rapid or worm-like movements of tongue
  9. trembling or shaking
  10. trouble in walking
  11. uncontrolled movements of arms and legs

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. Diarrhea
  2. metallic taste
  3. nausea

Less common

  1. Anxiety or nervousness
  2. dizziness
  3. headache
  4. mental depression
  5. nightmares
  6. pain in joints or muscles
  7. skin rash or itching
  8. trouble in sleeping
  9. unusual tiredness or sleepiness
  10. vomiting

Levamisole may cause a temporary loss of hair in some people. After treatment has ended, normal hair growth should return.

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.