Why only five days?
Because of movement disorders. Metoclopramide blocks dopamine in the brain, and with longer use that can cause tardive dyskinesia — involuntary repetitive movements of the face and tongue — which may be permanent.
A Europe-wide safety review in 2013 restricted it to five days at lower doses. It is a hard limit, not a cautious suggestion.
My face went into spasm. What happened?
An acute dystonic reaction. It is more common in young people, especially young women, and usually starts within the first day or two.
Stop the drug and seek advice the same day. It is treatable and it resolves — but it should be recorded, because it means avoiding this class of drug in future.
Can I take it for morning sickness?
It is used in pregnancy where needed, but usually not first. Cyclizine and promethazine are generally preferred initially. Persistent vomiting in pregnancy needs proper assessment rather than self-treatment.
Can I take it with migraine painkillers?
Yes — that is one of its best uses. Migraine slows the stomach, so painkillers sit there unabsorbed. Metoclopramide gets things moving and settles the sickness at the same time.
Is it addictive?
No. There is no dependence. The restriction is about movement disorders, which is a completely different concern.
Can I have it on repeat for my ongoing nausea?
No, and any service offering that is not prescribing safely. Ongoing nausea needs a cause established. If long-term treatment is genuinely required — gastroparesis, for instance — that is a specialist decision with specialist monitoring.
Can I drink alcohol?
Better not to. Both cause drowsiness, and alcohol will worsen whatever is making you sick.