Reading a lice-treatment label starts with identifying the exact product. For LIENDREX, the shampoo name, net contents and NDC help distinguish it from other products in the brand.
Formula and format
LIENDREX is a topical shampoo for treating head, body and pubic (crab) lice. Its label lists pyrethrins 0.30% and piperonyl butoxide 4%. The 4 fl oz (120 mL) bottle includes a fine-tooth comb. Menper Distributors, Inc. is listed as distributor. NDC 53145-308-04.
Active and inactive ingredients have different roles
The percentages in Drug Facts identify the active ingredients. Other ingredients are listed separately; they should not be interpreted as a dose or as additional benefits.
Listed inactive ingredients: Water, PEG-80 Sorbitan Laurate, Cocamidopropyl Betaine, Polysorbate 80, Sodium Trideceth Sulfate, Sodium Lauroamphoacetate, Sodium Laureth-13 Carboxylate, Citric Acid, Tetrasodium EDTA.
Read the label as a whole
Check the uses, directions and warnings before opening the bottle. LIENDREX II conditioner directions do not replace the shampoo's directions. Keep the carton for the complete information. Ask a healthcare professional about age, allergies or use if you have questions.
Directions from Drug Facts
- Read all warnings and package information. Shake well before use.
- Apply to dry hair or the affected area until all hair is thoroughly wet with the product.
- Leave on for 10 minutes, but no longer.
- Add enough warm water to form a lather and shampoo as usual. Rinse thoroughly.
- Use a fine-tooth or lice/nit-removal comb to help remove dead lice and nits.
- Apply a second treatment 7 to 10 days later to kill newly hatched lice.
Warnings and storage
For external use only. Use with caution in people allergic to ragweed. Do not use near the eyes or allow contact with mucous membranes, including inside the nose, mouth or vagina, because irritation may occur.
Keep eyes tightly closed until the product is rinsed out and protect them with a towel or other suitable material. If it enters the eyes, flush with water immediately. Stop use and ask a doctor if skin irritation or infection is present or develops, or if lice affect eyebrows or eyelashes.
Keep out of reach of children. If swallowed, get medical help or contact a Poison Control Center immediately. Protect from freezing and excessive heat. Do not reuse the original container.
Explore LIENDREX
- View shampoo and current availability
- LIENDREX brand page
- LIENDREX: combing, second treatment and warnings
- LIENDREX: shampoo, conditioner and product formats
Source
Menper LIENDREX labeling in DailyMed. Reviewed October 1, 2026. Read the complete package label before use.
