Reference notes
About Calamus (Sweet Flag)
Where it comes from
Acorus calamus rhizome — diploid North American chemotype (Acorus americanus) is the safer source with lower beta-asarone content. India and Eastern Europe are major commercial sources but tend to higher beta-asarone.
Appearance & scent
Pale yellow to amber; warm, spicy, slightly leathery and rooty, with a sweet undertone
Key chemistry
These are the natural compounds in Calamus (Sweet Flag) that do the work. You don't need to memorize them — but knowing what's in an oil helps you pick the right one for a specific use.
- Beta-asarone (variable by chemotype)
- Profile entry pending.
- alpha-asarone
- Profile entry pending.
- calamendiol
- Profile entry pending.
- acorone
- Profile entry pending.
Safety
CRITICAL: Beta-asarone in some chemotypes is considered potentially carcinogenic; the EU restricts internal use. External, low-dilution use only. Avoid in pregnancy and nursing. Not for children. Source from suppliers who specify low-beta-asarone chemotypes. Use sparingly even externally.
Pregnancy cautionNursing cautionChildren / infantsAvoid in
Pet safety — Not safe
Toxic to pets — keep away.
Type Essential Oil Availability Tier 4 Usage Aromatherapy, External only