Malathion Side Effects
What should I watch for?
This medicine is used as a single application treatment. Itching may occur for several days after treatment. This does not mean that the treatment has failed. If live lice are observed in 7 to 9 days after initial application, a second treatment may be needed. Contact your doctor before applying a second treatment.
If skin irritation occurs, wash scalp and hair immediately. If the irritation clears, the lotion may be reapplied. If irritation recurs or continues, consult your doctor or health care professional. Slight stinging sensations may occur while using this lotion.
All recently worn clothing, underwear, pajamas, used sheets, pillowcases, and towels should be washed in very hot water or dry-cleaned. Close personal contact can spread the infestation. Family members and sexual contacts may also require treatment for lice.
Common and Rare Side Effects
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:
Incidence not known
Blistering and peeling of the skin
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Abdominal or stomach cramps
anxiety or restlessness
clumsiness or unsteadiness
confusion or mental depression
difficult or labored breathing
increased watering of the mouth or eyes
loss of bowel or bladder control
muscle twitching of the eyelids, face, and neck
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:
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.