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Survodutide

Dual agonist

Also known as: BI 456906

Tier 2, Investigational, human data

Studied in registered human trials with published pharmacokinetic data, but not approved. Dosing outside a trial protocol has no established safety margin.

Half-life
Not established · human data · subcutaneous

FLAG: A half-life of ~6-7 days is widely cited but I could NOT trace it to an allowed primary source (it appears in the Journal of Hepatology cirrhosis PK paper, a non-permitted host). Reported null. C18 fatty-acid acylation and >99% albumin binding support once-weekly dosing. MW 4232 from PubChem name lookup.

Dosing
No established dose

Phase 2 programs (obesity, MASH) titrate once-weekly SC toward maintenance doses up to ~4.8 mg. Investigational; exact per-administration range depends on trial arm.

Titration
Investigational; stepwise weekly up-titration to target (up to ~4.8 mg) over several weeks.
Frequency
Once weekly (investigational)
Regulatory status
Investigational (Boehringer Ingelheim / Zealand Pharma), GCGR/GLP-1R dual agonist in phase 3 (obesity, MASH). Not approved.
Evidence base
human clinical · confidence: medium

Preclinical pharmacology (PMC9679702) plus phase 2 clinical trials; no regulatory label. Half-life not traceable to an allowed primary source.

Safety

Investigational; no boxed warning. Trial adverse events predominantly gastrointestinal; glucagon-agonist activity may increase heart rate. Not for clinical dosing decisions.