<prompt> Akathisia is treated by all exceptTrihexyphenidylPropanololHaloperidolPromethazine  <response>: Haloperidol can cause extrapyramidal effects dystonias, akathisia, parkinsonian features For akathisia and dystonic reactions, many clinicians prefer to use a sedative antihistamine with anticholinergic propeies, which can be given either parenterally or orally. Conventional antiparkinson drugs too can be used. Propranolol. Benzodiazepines are useful. Ref: KD Tripati 8th ed. 