-chloroquine, pyrimethamine
-cyclosporine, mycophenolate mofetil, tacrolimus capsules
-isoniazid
-medicines for depression, anxiety, or psychotic disturbances
-medicines to treat alzheimer''s disease or myasthenia gravis
-meperidine
-methocarbamol
-radiopaque contrast agents
-some antibiotics like penicillins, imipenem and quinolones such as ciprofloxacin, levofloxacin, gatifloxacin
-theophylline

They need to know if you have any of these conditions:
-brain or spinal tumor
-burns, wounds or other damaged skin
-eczema or atopic dermatitis
-frequently drink alcoholic beverages
-head trauma
-HIV infection
-liver disease
-psoriasis
-seizures
-skin rash
-an unusual or allergic reaction to lindane, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

Let your doctor or health care professional know if you still see lice after 7 days of the initial application. Do not use this medicine more than 1 time to treat lice. Using more than directed may increase your risk of experiencing serious side effects including seizures. If you or a family member experience a seizure, get emergency help right away.

Do not use this medicine on damaged skin. It can penetrate through skin that is burned, cut, scraped, or covered in a rash, and cause serious side effects.

If you are applying this medicine to another person, wear plastic or disposable gloves to protect yourself from lice infestation and exposure to the medicine.

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 require treatment for lice.

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Do not freeze. Keep container tightly closed. After applying the treatment, close the bottle with the leftover shampoo and throw it away out of the reach of children. Do not keep this medicine after using it.