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Retatrutide FDA Approval Tracker

Tracking retatrutide — Eli Lilly's investigational triple GLP-1/GIP/glucagon receptor agonist — on its path to FDA approval. As of mid-2026 it remains in Phase 3 development and is not approved for any use.

Last verified Sep 21, 2026·Status Not approved — Phase 3·All trackers
4
Points tracked
3
Points current
2h
Since last verification
0
Points expired
Point statusCurrent — confirmed within its check windowChanged — the underlying fact movedPending — re-check queuedExpired — past its window, treat as unverified

Inside a tracker

Not approved — Phase 3 · 4 points
Tracked statementStatusSourceLast confirmed
FDA approval statusNot approved (investigational) — Retatrutide is still in clinical development as of September 2026.Retatrutide is still in clinical development as of July 2026.CurrentSep 5, 2026
Trial phasePhase 3 (multiple readouts through 2026) — The Phase 3 program showed ~24–29% mean weight loss in earlier readouts; Eli Lilly has several Phase 3 readouts expected across 2026.The Phase 3 program showed ~24–29% mean weight loss in earlier readouts; Eli Lilly has several Phase 3 readouts expected across 2026.CurrentSep 5, 2026
Earliest possible approval2026–2027 (projected) — No updates on approval status as of September 2026.PendingSep 5, 2026
Compounding legalityNot permitted — Retatrutide is not a component of an FDA-approved drug and cannot be legally compounded.Retatrutide is not a component of an FDA-approved drug and cannot be legally compounded.CurrentSep 5, 2026

Expired does not mean false — it means nobody has confirmed it recently enough for us to stand behind it. Nothing on this tracker is past its window right now.

How we keep this current

Our AI Librarian periodically re-checks each line against primary sources — FDA notices, manufacturer announcements, and clinical-trial registries — and re-stamps the "last verified" date above. Fast-moving regulatory facts can still change between checks; always confirm against the linked primary source before relying on any single line.