Just know that different types of ginseng have different effects. There are 13 identifiable types of ginseng, generally falling into two major categories. Because of its higher yang composition, Asian ginseng is often reserved for men and older people who are seriously lacking in energy. Side effects may include insomnia and irritability. It generally takes a few weeks to notice a difference.
Continuous use is the key.
Ginseng is on the market in its natural root form, in tinctures, as tea and in capsules. Ginsenoside'' is often considered one of the root's more active components, though there is little research to support this claim. Ginsenoside comes in 30 different types, varying from plant to plant. It's not the only active ingredient, though. Asian ginseng contains only 1 or 2 per cent ginsenoside but is recognized as more potent.