Pyrethrum Extract, Piperonyl Butoxide
FDA Drug Information • Also known as: Liendrex
- Brand Names
- Liendrex
- Route
- TOPICAL
- Dosage Form
- SHAMPOO
- Product Type
- HUMAN OTC DRUG
What Is Pyrethrum Extract, Piperonyl Butoxide Used For?
USES: FOR THE TREATMENT OF HEAD, BODY, PUBIC (CRAB) LICE.
Dosage and Administration
DIRECTIONS IMPORTANT: READ WARNINGS AND OTHER INFORMATION BEFORE USING. SHAKE WELL BEFORE USING. USE ON DRY HAIR. APPLY TO AFFECTED AREA UNTIL ALL HAIR IS THOROUGHLY WET WITH PRODUCT. ALLOW PRODUCT TO REMAIN ON FOR 10 MINUTES BUT NO LONGER. ADD SUFFICIENT WARM WATER TO FORM A LATHER AND SHAMPOO AS USUAL. RINSE THOROUGHLY. A FINE TOOTH COMB OR SPECIAL LICE/NIT-REMOVAL COMB MAY BE USED TO HELP REMOVE DEAD LICE AND THEIR EGGS (NITS) FROM HAIR. A SECOND TREATMENT MUST BE DONE IN 7 TO 10 DAYS TO KILL ANY NEWLY HATCHED LICE.
Warnings and Precautions
WARNINGS FOR EXTERNAL USE ONLY.
Contraindications
ALLERGY ALERT: USE WITH CAUTION ON PERSONS WITH ALLERGIC TO RAGWEED.
About This Information
This drug information is sourced from FDA-approved labeling via the openFDA database. It is intended for educational and reference purposes only. This is not medical advice. Always consult your healthcare provider before making decisions about medication. Drug information may be updated by the FDA; check with your pharmacist for the most current information.
What are side effects?
Side effects are unwanted reactions that can occur when taking a medication. They range from mild (headache, nausea) to severe (allergic reactions, organ damage). Not everyone experiences side effects, and severity varies. Report any concerning side effects to your doctor.
What are drug interactions?
Drug interactions occur when a medication is affected by another drug, food, or supplement. Interactions can make medications less effective or cause dangerous side effects. Always tell your doctor about all medications and supplements you take.