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Due to its action on the gut, metoclopramide may affect the absorption of various medicines that are taken by mouth. A positive application of this is for relieving migraine, where metoclopramide speeds the absorption into the bloodstream of painkillers such as paracetamol and aspirin.
The following medicines may oppose the effect of metoclopramide on the gut:
- antimuscarinic medicines, eg atropine, hyoscine, procyclidine
- opioid painkillers, eg morphine, codeine.
Metoclopramide may decrease the blood level of atovaquone.
Metoclopramide may increase the blood level of ciclosporin.
Metoclopramide may increase the drowsiness and sedation that are side effects of opioid painkillers such as morphine.
There may be an increased risk of side effects known as extrapyramidal effects if metoclopramide is used with tetrabenazine or with antipsychotic medicines, eg chlorpromazine. Extrapyramidal side effects involve abnormal movements of the hands, legs, face and tongue, for example tremor or twitching.
Metoclopramide may oppose the effect of medicines for Parkinson's disease that work by stimulating dopamine receptors in the brain, for example ropinirole, pergolide, bromocriptine.
There may be an increased risk of a side effect called the serotonin syndrome if this medicine is used in combination with the following medicines:
- selective serotonin reuptake inhibitor antidepressants (SSRIs), such as citalopram, escitalopram, fluoxetine, fluvoxamine, paroxetine or sertraline
- the herbal remedy St John's wort (Hypericum perforatum)
- triptans for migraine, eg sumatriptan
- tryptophan.
Other medicines containing the same active ingredient
| Maxolon high dose | Maxolon paediatric liquid | Maxolon SR |
| Maxolon tablets/syrup |