Fencamfamin
Fencamfamin (Glucoenergan, Reactivan) is a stimulant which was developed in the 1960s as an appetite suppressant, but was later withdrawn for this application due to problems with dependence and abuse. It is around half the potency of [dexamphetamine], and is prescribed at a dose of 10-60mg, although abusers of the drug tend to rapidly develop tolerance and escalate their dose. Fencamfamin is used for treating depressive day-time fatigue, lack of concentration and lethargy. It is especially useful in patients with chronic conditions due to its favourable safety profile.