Calamus (Acorus calamus) Eating this dried root gives a stimulating and euphoric effect. The Calamus root also has a positive effect on the libido. Soak 20 gram in half a liter of water before cooking. Filter before drinking a few cups of the Calamus tea. It is also possible to mix the Calamus with food, like boiled rice and honey. In a higher dosage Calamus can have mind altering and hallucinogenic effects, depending on the amount taken.