Is Lonsurf a Controlled Substance? No

No. Lonsurf (trifluridine and tipiracil) is not a federally controlled substance. None of its FDA NDC listings carries a DEA schedule, and trifluridine and tipiracil is not on the DEA controlled substances list.

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Schedule check

Schedule sources for Lonsurf
Source	What it lists
FDA NDC directory	2 prescription listings from 1 labelers, none with a DEA schedule
DEA controlled substances list	trifluridine and tipiracil is not on the list

Lonsurf NDC listings

NDC listings for Lonsurf
NDC	Product	Form	Strength	Labeler	DEA schedule
64842-1025	LONSURF	tablet, film coated	15 mg/1; 6.14 mg/1	Taiho Pharmaceutical Co., Ltd.	None
64842-1020	LONSURF	tablet, film coated	20 mg/1; 8.19 mg/1	Taiho Pharmaceutical Co., Ltd.	None

Questions

Is Lonsurf a controlled substance?

No. Lonsurf (trifluridine and tipiracil) is not a federally controlled substance. None of its FDA NDC listings carries a DEA schedule, and trifluridine and tipiracil is not on the DEA controlled substances list.

Is Lonsurf a narcotic?

No. Lonsurf (trifluridine and tipiracil) is not on the DEA controlled substances list, so the DEA does not classify it as a narcotic. Its FDA established pharmacologic class is Nucleoside Analog Antiviral and Nucleoside Metabolic Inhibitor and Thymidine Phosphorylase Inhibitor.

Does this page cover state schedules?

No. This page reports the federal schedule only. Some states schedule drugs on their own; check your state board of pharmacy.