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. 2021 Jun 1;51(3):72–78.

Table 1. Pharmacological Options for Akathisia2,7.

Class Drug Mechanism of
action
Dose (mg/d) Clinical
Recommendations
for antipsychotic-
induced akathisia
Beta-Blockers Propranolol non-selective beta blockade 20–120 First-line adjunctive medication treatment
Benzodiazepine Clonazepam agonist action at GABA-A receptors 0.5–2 Consider for short term treatment
Anti-cholinergics Benztropine/Biperiden antagonizes acetylcholine Benztropine
(1.5–8)
Biperiden
(2–6)
May help mild subjective symptoms with concurrent parkinsonian symptoms; not routinely recommended
Central alpha agonist Clonidine stimulates alpha-2 adrenergic receptors 0.2–0.8 Limited evidence supports treatment
Tricycyclic/Tetracyclic antidepressant Mirtazapine antagonizes alpha-2 adrenergic and serotonin 5HT2A receptors 15 Considered as first-line treatment when propranolol is contraindicated, ineffective, intolerable

Other pharmacological options2: Mianserin, trazodone, cyproheptadine, Vit B6, amantadine, gabapentin, and pregabalin have been examined with insufficient evidence.