Settles vertigo and nausea quickly — but taking it for more than a few days actively slows recovery.
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Prochlorperazine is a phenothiazine that blocks dopamine receptors in the brain's vomiting centre and in the vestibular pathways. It reduces nausea, vomiting and the spinning sensation of vertigo.
It is a sedating, symptom-suppressing medicine. It does not treat the cause of vertigo — it makes the symptom tolerable while the cause settles or is identified.
That distinction drives the most important point on this page: used briefly it is genuinely helpful, and used for weeks it holds back the brain's own compensation and makes recovery slower.
It is not the treatment for BPPV, the commonest cause of vertigo, which is triggered by head position and treated with a repositioning manoeuvre. Suppressing BPPV with medication instead of doing the manoeuvre is a genuinely common mistake.
Use it for the shortest time possible — generally no more than three days for vertigo.
The brain compensates for a damaged balance organ by recalibrating, and that process only happens if it experiences the imbalance. Vestibular sedatives block exactly that. Taking prochlorperazine for weeks is one of the commonest reasons vertigo becomes chronic.
Once you can keep fluids down, stop it and start moving.
Extrapyramidal effects — involuntary movements, muscle stiffness, restlessness, and abnormal postures of the neck, jaw or eyes. These are more common in younger people and can appear after a single dose. They are frightening, frequently mistaken for something neurological, and reversible on stopping.
Tardive dyskinesia — persistent involuntary movements, a risk with prolonged use, and one reason short courses matter.
Rarely: neuroleptic malignant syndrome, jaundice, blood disorders, QT prolongation.
Seek urgent help for high fever with muscle rigidity and confusion, or for any sustained abnormal posturing.
Caution in epilepsy, heart rhythm disorders, glaucoma, prostate enlargement and pregnancy.
Vertigo with new deafness, double vision, weakness, slurred speech, severe headache or unsteadiness on walking is not vestibular until proven otherwise — that needs urgent assessment, not an antiemetic.
No routine bloods for a short course.
What matters is review rather than monitoring: if it is still being taken after a week for vertigo, that is the thing to question.
Yes, for short-term use where the picture is clearly vestibular and the red flags are absent.
The consultation matters more than the prescription, because the label "vertigo" covers several quite different conditions with different treatments.
What we will not do is supply repeat prochlorperazine for ongoing dizziness. Prolonged use is actively counterproductive, and persistent vertigo needs a diagnosis rather than continued suppression.
Where we will send you elsewhere: any red flag above, sudden hearing loss, or vertigo with neurological signs — those need urgent in-person assessment.
A prescription is never guaranteed. This page is information, not an offer to supply.
Prochlorperazine is an inexpensive generic. On a private prescription the cost is broadly comparable to the England NHS prescription charge. NHS prescriptions are free in Wales.
Buccal prochlorperazine (Buccastem M) is available from pharmacies without a prescription for nausea and dizziness in adults, after a pharmacist consultation — often the quickest route for a short episode.
Stop as soon as you can keep fluids down and the worst has passed — usually within three days.
There is no tapering needed after a short course.
Vestibular compensation — the brain relearning balance — requires exposure to the imbalance. Prochlorperazine suppresses that signal. Continuing it beyond the acute phase measurably delays recovery, and is a recognised cause of vertigo becoming persistent.
The moment you can, start moving and begin vestibular exercises, even while still somewhat unsteady.
As briefly as possible — generally no more than three days for vertigo. Longer use holds back the brain's own recovery and can turn a short illness into a lasting problem.
Often because the medicine has been preventing recovery rather than allowing it. Vestibular compensation needs the brain to experience the imbalance. The answer is usually exercises, not more tablets.
Not really, and it is the wrong treatment. BPPV — brief spinning on rolling over or looking up — is treated with the Epley repositioning manoeuvre, which is free and often works immediately.
No. It is significantly sedating, and vertigo itself makes driving unsafe.
Muscle stiffness, restlessness, or abnormal posturing of the neck, jaw or eyes. More common in younger people, can follow a single dose, and reversible on stopping — but seek advice promptly.
No. It blocks dopamine and can substantially worsen Parkinson's. Tell us about any movement disorder.
With sudden deafness, double vision, slurred speech, weakness, severe headache, or inability to walk. That is not ordinary vertigo and needs urgent assessment.
Clinically reviewed by Dr Mohammad Zubair Khan, GMC 7563469
Last reviewed
September 8, 2026
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