Herb Addiction

Addiction is a nasty side effect of most herbs. Anytime a character takes an herb, she should make a Willpower + Resisting Poisons check (adding in the Addiction Modifier) or become addicted to the herb. Addicts suffer cravings and are subject to periodic Willpower + Resisting Urges to prevent themselves from taking another dose (or going through considerably trouble to locate one if none is available). Those unable to get the herb start to suffer withdrawal symptoms defined by the type of herb (see Herb Addiction Symptoms).

Bungling the Resisting Poisons check generally means that the character instantly has an adverse reaction to the herb, causing instant withdrawal symptoms and resistance to all further uses of the herb. It may also mean that the herb has some unexpected or highly exaggerated effect, such as a higher level of symptoms or more of them. Characters who use a particular type of herb habitually may be subject to increased penalties.