Drug reference
251-nbome
5HT2A receptor agonist · Hallucinogen
5HT2A receptor agonistHallucinogen
CDSCO approved
EXCRETION
—
not curated
INTERACTIONS
—
none in our sources
PREGNANCY
—
not curated
Mechanism
251-NBOMe is a synthetic, highly potent 5HT2A receptor agonist.
Side effects
Common
TachycardiaHypertensionAgitationAggressionHallucinationsSeizures
Serious
- Overdose deaths
- Injury-related deaths
Ask House about 251-nbome
Continue into a citation-backed clinical answer with the drug context already attached.
Sources: Goodman & Gilman 14e·Verified: 2026-05-10 · House clinical team