Nomifensine (Merital, Alival) is a norepinephrine-dopamine reuptake inhibitor developed by a team at Hoechst AG in the 1960s.. The drug was test marketed in the United States by Hoechst AG (now Sanofi-Aventis), i.e. a drug that increases the amount of synaptic norepinephrine and dopamine available to receptors by blocking the dopamine and norepinephrine reuptake transporters. This is a mechanism of action shared by some recreational drugs like cocaine (see DRI), and currently-available antidepressants (e.g. Bupropion).[citation needed]
Nomifensine was investigated for use as an antidepressant in the 1970s, and was found to be a useful antidepressant at doses of 50-225 mg per day, both motivating and anxiolytic. There were relatively few adverse effects (mainly dry mouth, headache, nausea), the drug was not sedating, did not interact significantly with alcohol and lacked anticholinergic effects. No withdrawal symptoms were seen after 6 months treatment. The drug was however considered not suitable for agitated patients as it presumably made agitation worse.