Antidyskinetic agents

Amantadine, sold under the brand name Gocovri among others, is a medication used to treat dyskinesia associated with parkinsonism and influenza caused by type A influenzavirus, though its use for the latter is no longer recommended because of widespread drug resistance. It is also used for a variety of other conditions. The drug is taken by mouth.

Levetiracetam, sold under the brand name Keppra among others, is an antiepileptic drug (medication) used to treat epilepsy. It is used for partial-onset, myoclonic, or tonic–clonic seizures, and is taken either by mouth as an immediate or extended release formulation or by injection into a vein.

Tetrabenazine is a drug for the symptomatic treatment of hyperkinetic movement disorders. It is sold under the brand names Nitoman and Xenazine among others. On August 15, 2008, the US Food and Drug Administration (FDA) approved the use of tetrabenazine to treat chorea associated with Huntington's disease. Although other drugs had been used "off-label", tetrabenazine was the first approved treatment for Huntington's disease in the United States. The compound has been known since the 1950s.

Safinamide, sold under the brand name Xadago among others, is a medication used as treatment for Parkinson's disease with "off" episodes; it has multiple modes of action, including the inhibition of monoamine oxidase B.

Valbenazine, sold under the brand name Ingrezza, is a medication used to treat tardive dyskinesia. It acts as a vesicular monoamine transporter 2 (VMAT2) inhibitor.

3-Methylmethcathinone (3-MMC), also known as metaphedrone, is a designer drug from the substituted cathinone family. 3-MMC is a monoamine transporter substrate (a substance acted upon by monoamine transporters in the brain) that potently releases and inhibits the reuptake of dopamine and norepinephrine, as well as displaying moderate serotonin releasing activity.

Deutetrabenazine, sold under the brand name Austedo, is a vesicular monoamine transporter 2 inhibitor which is used for the treatment of chorea associated with Huntington's disease and tardive dyskinesia.

Befiradol (F-13,640; NLX-112) is an experimental drug being studied for the treatment of levodopa-induced dyskinesia. It is a potent and selective 5-HT1A receptor full agonist.

Eltoprazine (; developmental code name DU-28,853) is a non-selective serotonin receptor modulator of the phenylpiperazine family which was under development for the treatment of aggression, attention deficit hyperactivity disorder (ADHD), cognition disorders, drug-induced dyskinesia, and psychotic disorders but was never marketed. It has been described as a "serenic" or antiaggressive agent. The drug is taken orally.