RID
Ingredient: Pyrethrin
Dosage Form:
Shampoo: 0.33% pyrethrin plus 4% piperonyl butoxide technical.
Spray: Permethrin 0.5%.
Lice and Egg Comb Out Spray: Contains no active ingredients.
FDA Indication/Dosages:
For treatment of head lice (Pediculus humanus capitis), body lice (Pediculus humanus corporis), and pubic lice (Pthirus pubis).
Liquid Form Only:
1. Shake bottle well. While infested areas are dry, apply liquid until entirely wet. Do not use on eyelashes or eyebrows.
2. Allow to remain on the area for 10 minutes but no longer.
3. Rinse with warm water and wash hair with regular shampoo.
4. Remove nits (eggs) with comb provided. Start at the top of the scalp to avoid reinfestation.
5. Disinfect comb by soaking in very hot water for 10 minutes.
6. Repeat treatment in 7-10 days to kill any hatched eggs.
For disinfection of inanimate objects contaminated with the above lice:
Spray – Do not use on humans or animals.
1. Shake can well. Test in a hidden area for staining or discoloration.
2. Spray infested area from a distance of 8-10 inches for 3 seconds. Be sure to spray away from you. Spray only objects that cannot be washed and dried or dry-cleaned.
3. Let object dry before use.
Pharmacology: Pyrethrins are pediculicides that act on the nervous system of the louse to cause paralysis and death. They are active on lice but less so on their unhatched eggs. Piperonyl butoxide prevents the louse from detoxifying the active ingredients. The petrolatum distillates included will cause irritation to the eyes and mucous membranes. The active ingredient in the spray is toxic to humans and animals.
Evaluation: Lice are small parasites that infect hairy parts of the human body, especially the scalp. Although they can be seen with the naked eye, diagnosis is usually by visualization of the eggs (nits) they lay. The eggs are white and are connected to a hair shaft close to the skin. As the hair grows, the egg moves away from the skin. They usually hatch in 5-10 days. The easiest area to observe the lice and eggs is behind the ear and on the back of the neck. Lice bite the host and feed off of their blood. A louse bite may cause a local reaction including itching.
Contraindications/Precautions: For external use only – do not use near the eyes or mucous membranes. Do not inhale fumes directly. If contact with the eyes occurs, immediately flush with water. Do not use on infants less than 2 months of age. Active ingredients come from the chrysanthemum flower – use caution in individuals with ragweed allergies. DO NOT USE THE SPRAY ON HUMAN OR ANIMALS. Do not spray into eyes. Cover fishbowls while spraying. Use only in well ventilated areas – do not breathe the mist. Vacate the room after treatment and ventilate before returning. Flush with water if contact with skin occurs.
Adverse Effects: Itching, redness, or swelling of the skin may occur. Rare hypersensitivity reactions have occurred, including bronchospasm.
Patient Consultation:
Follow application directions closely.
If infestation of the eyebrows occurs, apply petrolatum ophthalmic ointment to the eyebrows for 8 days and remove nits during treatment. If this fails, consult a physician.
Lice can live on clothes and linen. Disinfect clothing and linen including bed sheets by dry cleaning or washing in hot water and drying in a clothes’ drier. Disinfect combs by soaking in hot water for 10 minutes.
Inspect family members daily for 2 weeks for infestations.
DO NOT USE THE SPRAY ON HUMANS OR ANIMALS.