There are many words used to describe herbs and their actions on
the body. The following is a guide to understanding these unique
terms. a substance that invigorates or strengthens the system
(also called a tonic). a substance that produces a gradual,
beneficial change in the body. heterogeneous group of alkaline,
organic, compounds containing nitrogen and usually oxygen;
generally colorless and bitter-tasting; especially found in seed
plants. a substance that reduces or relieves pain. a pain
relieving agent, less potent than an anesthetic or narcotic. a
substance that expels or destroys intestinal worms (also called
a vermifuge). a substance that reduces or suppresses
perspiration. an agent that reduces or prevents fever (also
called a febrifuge). an agent that relieves spasms or cramps. a
mild and gentle-acting laxative. an agent that stimulates the
appetite. a substance that increases sexual desire or potency. a
substance with a strong, volatile, fragrant aroma; often with
stimulant properties. an agent th