Source: roots.
Actions: immune booster, tonic, stimulant, adaptogenic (improves tolerance to physical, mental and environmental stresses). Siberian ginseng isn't technically a member of the ginseng family, but it has very similar properties and is widely used.
Therapeutic uses: stress, nervous exhaustion, insomnia, depression, poor memory and concentration, chronic fatigue syndrome, jet lag.
Typical preparation: decoction, tablets/capsules, liquid tincture. Best taken early in the day.
Contraindications: not to be taken with coffee or for more than six weeks at a time. Avoid if pregnant or have high blood pressure. Unsuitable for children.