Lice - Medications
Antihistamines (both prescription and nonprescription) can treat the itching that often occurs with lice. These medicines may cause drowsiness. Don't give antihistamines to your child unless you've checked with the doctor first.
If there is a serious skin infection, antibiotics may be needed.
Prescription medicines such as crotamiton or trimethoprim sulfamethoxazole (Bactrim, Septra) are sometimes used to treat head and pubic lice.4
What to Think About
It is not necessary to remove lice eggs from hair after treatment with topical medicines, but some people may wish to remove them for cosmetic reasons.
Most products used to treat lice may cause side effects if they are not used properly. Never use a product more than two times (with less than 7 days between uses) without first consulting a doctor.
There is some concern that lice are becoming resistant to (can no longer be killed by) permethrin or other medicine used to treat lice infestations. It is also possible that lice may persist after treatment because the medicine was not used properly or because the person was reinfected by someone else who was still infected with lice.
Wet combing is an option for infants who can't use lice medicines.