United States· US:11383-001_372819f1-0818-2cd5-e063-6294a90ac5bf
Lice No More Lice Killing
A medicinal product containing piperonyl butoxide; pyrethrum extract, registered in United States by Weeks & Leo Co., Inc.
Checked against FDA National Drug Code directory (United States) on
Informational only — not a medical device.
The record
At a glance
FDA National Drug Code directory (United States)- Active substance
- PIPERONYL BUTOXIDE; PYRETHRUM EXTRACT
- Manufacturer
- Weeks & Leo Co., Inc
- Country
- United States (US)
- ATC code
- —
- Reimbursed
- Not published by this register
- Source register
- FDA National Drug Code directory (United States)
- Last checked
- September 27, 2026
Packs & prices · 2
- ndc1111383-001-04
- ndc1111383001041 BOTTLE in 1 CARTON (11383-001-04) / 118 mL in 1 BOTTLE
Regulatory notes
No shortage, Orange Book or US label notes for this record.
Same medicine, other countries
Piperonyl butoxide; pyrethrum extract in 2 other countries
What each register calls a product with the same active substance — salts and hydrates count as the same.
Sourced from a public register and reproduced with attribution. Drug Database is not affiliated with, endorsed by, or a partner of FDA National Drug Code directory (United States). This is an informational data service and not a medical device — verify against the official source of record before any clinical decision.
For developers
The same record over the API, and the raw payload
GET /v1/drugs/6164fff6-adad-463a-a70f-bd294ed8870b GET /v1/drugs/6164fff6-adad-463a-a70f-bd294ed8870b?format=fhir
Every response carries last_synced_at, so freshness is a field rather than a promise. Below is exactly what the ingestion wrote, before any presentation — the same JSON the API returns under payload.
{
"route": "TOPICAL",
"source": "ndc",
"strength": "4; .33",
"substance": "PIPERONYL BUTOXIDE; PYRETHRUM EXTRACT",
"productndc": "11383-001",
"dosage_form": "SHAMPOO",
"dea_schedule": null,
"strength_unit": "g/100mL; g/100mL",
"application_number": "M031",
"marketing_category": "OTC MONOGRAPH DRUG"
}See everything about piperonyl butoxide; pyrethrum extract.
This page is the registration. A free account adds the label text as the regulator wrote it, what it costs per daily dose across the markets that publish a price, a feed of what changes in the registers, and an assistant that answers with its sources. Interaction severity is free; mechanism and management are on the Growth plan. No card, nothing to install.