Herb
Calamus (Sweet Flag)
Historical claim, not recommended: an old source listed calamus as a bitter appetite stimulant, but it can contain a liver-toxic compound and appetite problems need professional care.
🛑 RemedyRank warns against this
Calamus can contain beta-asarone, which is toxic to the liver.
This page exists so the reasons are written down plainly, not because the practice is recommended. Nothing is sold here. If a doctor has prescribed something for a diagnosed condition, follow their guidance — that is a decision between you and them, and it is a different thing from trying this at home.
📊 How it ranks (our editor score) — 25/100Tap to see the breakdown
👶 Safe for children?
This remedy carries age-related cautions. Please read them before giving it to a child, and check with your pediatrician or pharmacist first.
- It should be avoided entirely in pregnancy, breastfeeding, and in children.
🌱 What it is
Calamus, also called sweet flag, is a marsh plant historically used as a bitter herb taken before meals to stimulate appetite.
📜 Where it comes from
An old remedy book listed sweet flag, or calamus, alongside gentian, buckbean, and marsh trefoil as bitter herbs to take before meals to perk up a poor appetite. Bitter herbs before meals were a common European folk and Greco-Roman digestive tradition, but calamus in particular carried a hidden toxicity that later testing revealed.
🥄 How to use it
RemedyRank does not recommend taking calamus internally. For a poor appetite or an eating disorder such as anorexia, seek compassionate, professional support rather than a stimulant herbA plant, or part of one, used for flavor, food, or gentle health support. More →.
How much: None. Not recommended at any dose.
Why it works: The old claim supposed the bitter taste would stimulate digestive juices and appetite, but calamus can contain beta-asarone, a compound that is toxic to the liver and has caused tumors in animal studies, which is why the United States has long banned it as a food additive.
⚠️ Cautions
- Calamus can contain beta-asarone, which is toxic to the liver.
- Beta-asarone has caused tumors in animal studies.
- The United States has long banned calamus as a food additive for these reasons.
- Loss of appetite, and especially an eating disorder such as anorexia, needs compassionate, professional support rather than a stimulant herb.
📚 Learn more
🌿 Deeper natural detail
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🩺 The conventional view
💬 Ask Remy about Calamus (Sweet Flag)
📚 Resource confidence
Based on mentions in health references
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