SHEET /m/ephedrine · PubChem CID 9294 · CAS 299-42-3 · REV 2026.07
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Ephedrine from source
C10H15NO · 165.23 g/mol
l-Ephedrine · (-)-Ephedrine · Ephedrin · Mandrin
Also sold as Bronkaid, Primatene from source
chemical compound
CategoryOTC medicine
Fig. 1 · 2D structure RDKit
C[C@@H]([C@@H](C1=CC=CC=C1)O)NC
Where you'll find it
Not yet mapped to everyday foods or products.
The dose makes the poison inferred
A reported rat oral LD50 for Ephedrine is 600 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:
42.0 g
a median lethal dose scaled to 154 lb (42,000 mg)
“The dose makes the poison” is a cross-species estimate shown as neutral science, not a threshold anyone should act on. Real toxicity depends on the person, not body mass alone.
Toxicity & hazards
Toxicity · LD50
600 mg/kg · low toxicity · LD50 rat oral from source
The dose lens above scales this to a body weight.
3 more reported values
- 812 mg/kgLD50 · oral · mouse
- 1,072 mg/kgLD50 · oral · mouse
- 300 mg/kgLD50 · other · rat
DangerCorrosiveIrritantHealth hazardH302, H314, H317, H318, H360, H362, H371, H373from source
Keep roaming
Where Ephedrine leads
Relatedcomputed