“May all be happy, may all be healed, may all be at peace and may no one ever suffer."
Prochlorperazine is a dopamine & histamine antagonist. The mechanism of antiemetic activity is due to the blockade of histamine H, & dopamine D2 neurotransmitter receptors in the chemoreceptor trigger zone and vomiting centre. It also has a weak anticholinergic effect and prevents acid reflux by increasing the tone of the lower oesophageal sphincter.