Nix, Elimite, Acticin
Classifications: scabicide; pediculicide; Therapeutic: scabicide; pediculicide
Pregnancy Category: B
5% cream; 1% liquid
Pediculicidal and ovicidal activity against Pediculus humanus var. capitis (head louse). Inhibits sodium ion influx through nerve cell membrane channels, resulting in delayed repolarization of the
action potential and paralysis of the pest.
It prevents burrowing into host's skin. Since lice are completely dependent on blood for survival, they die within 2448
h. Also active against ticks, mites, and fleas.
Hypersensitivity to pyrethrins, chrysanthemums, sulfites, or other preservatives or dyes; acute inflammation of the scalp;
Children <2 y (liquid), and <2 mo (lotion); asthma; pregnancy (category B).
Route & Dosage
Adult/Child (>2 y): Topical Apply sufficient volume to clean wet hair to saturate the hair and scalp; leave on 10 min, then rinse hair thoroughly
- Saturate scalp as well as hair with the lotion; this is not a shampoo.
- Hair should be washed with regular shampoo before treatment with permethrin, thoroughly rinsed and dried.
- Shake lotion well before application. One container holds enough for at least one treatment, but two containers may be necessary
if patient has long hair.
- Rinse hair and scalp thoroughly and dry with a clean towel following 10 min exposure to the medication. Head lice are usually
eliminated with one treatment.
- Store drug away from heat at 15°25° C (59°77° F) and direct light. Avoid freezing.
Adverse Effects (≥1%)Skin: Pruritus, transient tingling,
burning, stinging, numbness; erythema, edema, rash.
<2% of amount applied is absorbed through intact skin. Metabolism:
Rapidly hydrolyzed to inactive metabolites. Elimination:
Primarily in urine.
Assessment & Drug Effects
- Do not attempt therapy if patient is known to be sensitive to any pyrethrin or pyrethroid. Stop treatment if a reaction
Patient & Family Education
- When hair is dry, comb with a fine-tooth comb (furnished with medication) to remove dead lice and remaining nits or nit
- Be aware that drug remains on hair shaft up to 14 d; therefore, recurrence of infestation rarely occurs (<1%).
- Inspect hair shafts daily for at least 1 wk to determine drug effectiveness. Contact physician if live lice are observed
after 7 d. A renewed prescription for a second treatment may be ordered. Signs of inadequate treatment: Itching, redness
of skin, skin abrasion, infected scalp areas.
- Resume regular shampooing after treatment; residual deposit of drug on hair is not reduced.
- Be aware that drug is usually irritating to the eyes and mucosa. Flush well with water if medicine accidentally gets into