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Glossary / REMS

REMS

Definition

A REMS (Risk Evaluation and Mitigation Strategy) is an FDA-required safety program attached to certain drugs whose risks demand more than labeling — extra requirements on prescribers, pharmacies, and sometimes patients before the drug can be dispensed.

By Lithos Staff · Updated July 2026

At a glance
  • FDA-mandated safety programs for higher-risk drugs
  • ETASU tiers can require certified prescribers and pharmacies
  • iPLEDGE (isotretinoin) is the best-known example
  • A REMS drug imports its program requirements into your catalog

How REMS programs work

REMS requirements scale with risk. The lightest are medication guides and communication plans; the heaviest — called elements to assure safe use (ETASU) — require certified prescribers, certified pharmacies, patient enrollment, lab monitoring, or restricted distribution. Isotretinoin’s iPLEDGE program and clozapine’s monitoring requirements are the classic examples: the drug simply cannot be dispensed outside the program’s rails.

Why REMS matters to telehealth catalogs

A REMS drug in your treatment catalog imports the program’s requirements into your operation: prescriber certification, pharmacy network participation, documented patient counseling or enrollment, and auditable compliance with each element. Most DTC categories avoid heavy-ETASU drugs for exactly this reason — but dermatology programs meet iPLEDGE the moment isotretinoin is on the menu, and any expansion into specialty medications starts with a REMS check as part of catalog diligence.

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Frequently asked questions

How do I know if a drug has a REMS?

The FDA maintains a public REMS database listing every active program and its requirements — checking it is a standard step in catalog diligence.

Can telehealth programs prescribe REMS drugs?

Often yes, if prescribers and pharmacies meet the program requirements — some REMS integrate smoothly with telehealth, others effectively require in-person infrastructure.

Do GLP-1s have REMS programs?

The major GLP-1 weight-loss drugs do not currently carry REMS programs; their operational complexity comes from supply, coverage, and compounding rules instead.

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