DEA schedule

Is Cartia Xt a controlled substance?

Cartia Xt contains diltiazem. Federal schedule from the FDA NDC directory, checked against the DEA controlled substances list.

Source: FDA NDC Directory file dated 2026-10-22. Publisher page

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

Run it in Rivvi

Which 2027 plans near you dropped or restricted Cartia Xt?

Tier changes and new prior auth, step therapy or quantity limits, plan by plan.

Free to start. Opens Rivvi, the AI workspace for healthcare teams.

Schedule check

Schedule sources for Cartia Xt
Source	What it lists
FDA NDC directory	1 prescription listings from 1 labelers, none with a DEA schedule
DEA controlled substances list	diltiazem is not on the list

Cartia Xt NDC listings

NDC listings for Cartia Xt
NDC	Product	Form	Strength	Labeler	DEA schedule
72189-344	CARTIA XT	capsule, extended release	300 mg/1	DirectRx	None

Questions

Is Cartia Xt a controlled substance?

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

Is Cartia Xt a narcotic?

No. Cartia Xt (diltiazem) is not on the DEA controlled substances list, so the DEA does not classify it as a narcotic. Its FDA established pharmacologic class is Calcium Channel Blocker.

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.

Is Cartia Xt a controlled substance?

Which 2027 plans near you dropped or restricted Cartia Xt?

Schedule check

Cartia Xt NDC listings

Questions

More on Cartia Xt

Try it on your own data today.