# MLR Review (Medical, Legal, Regulatory)

> MLR review is the internal medical, legal, and regulatory examination every piece of pharmaceutical promotional or medical material must pass before use — verifying claim substantiation, safety balance, and label consistency.

> **MLR review** (medical-legal-regulatory review) is the mandatory internal process by which pharmaceutical companies examine promotional and medical materials before use. Medical reviewers verify that every claim is accurately substantiated by evidence; legal reviewers assess liability and IP; regulatory reviewers check consistency with the approved label and applicable rules (in the US, FDA/OPDP requirements). Nothing customer-facing ships without it.

Materials in scope include sales aids, slide decks, leave-behinds, e-details, websites, congress panels, and — depending on company SOPs — medical-affairs materials. Typical deliverables pass through **two to three or more review rounds**, each adding calendar weeks, which is why MLR cycle time is one of the most-attacked bottlenecks in medical communications.

Synonyms and regional variants: *promotional review*, *PRC review* (after the [Promotional Review Committee](/glossary/promotional-review-committee/)), and in the UK, [*copy approval* and *certification*](/glossary/copy-approval/) under the ABPI Code. The acronym also collides with non-pharma meanings ("medical loss ratio" in US insurance) — context matters when searching.

The review's center of gravity is [substantiation](/glossary/substantiation/): can each claim be traced to evidence that actually supports it, at the page/column/paragraph level? Most findings — and therefore most review rounds — are substantiation findings, which is why pre-review tooling focuses there.

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Source: https://medcom.claims/glossary/mlr-review/ · Updated 2026-07-13 · © Mantir, Inc.