Metoclopramida Kern Pharma (Metoclopramide)

Metoclopramide is used in several gastrointestinal and central nervous system pathways to control nausea and improve motility.

• Nausea and vomiting: Reduces episodes of acute and chemotherapy‑induced nausea and vomiting.
• Gastroparesis: Enhances gastric emptying and alleviates symptoms of delayed stomach emptying.
• Gastro‑oesophageal reflux disease: Improves lower esophageal sphincter tone and reduces reflux episodes.
• Migraine‑associated nausea: Controls nausea accompanying migraine attacks.

• Metoclopramide antagonizes dopamine D2 receptors in the chemoreceptor trigger zone and throughout the gastrointestinal tract, decreasing nausea signaling. It also blocks 5‑HT3 receptors and stimulates 5‑HT4 receptors, which together promote coordinated gastric contractions and accelerate gastric emptying. The combined dopaminergic and serotonergic actions result in antiemetic and gastro‑prokinetic effects.

Metoclopramide may cause a range of adverse reactions, which are grouped by frequency and severity.

Common Side Effects

• Drowsiness: mild sedation or fatigue.
• Fatigue: general feeling of tiredness.
• Diarrhea: loose stools or increased bowel movements.
• Restlessness: feeling of inner tension or inability to stay still.
• Dystonia: involuntary muscle contractions, especially in the neck or face.
• Dry mouth: reduced salivation.

Serious or Rare Side Effects

• Tardive dyskinesia: persistent involuntary movements after prolonged use.
• Neuroleptic malignant syndrome: life‑threatening reaction with fever and muscle rigidity.
• Seizures: occasional convulsive episodes.
• Severe depression or suicidal thoughts: marked mood changes.
• Allergic reactions: rash, itching, swelling, or anaphylaxis.

Before prescribing Metoclopramide, clinicians should consider several safety precautions.

• Contraindication: Avoid use in patients with known hypersensitivity to metoclopramide or other dopamine antagonists.
• Pregnancy: Use only if the potential benefit justifies the potential risk; category B.
• Breastfeeding: Caution advised as the drug is excreted in breast milk.
• Neurological disorders: Monitor closely in patients with Parkinson’s disease, seizure disorders, or a history of extrapyramidal reactions.
• Elderly patients: Start with the lowest effective dose and watch for confusion or falls.
• Store at ambient temperature: Keep below 25 °C in the original packaging, protected from moisture and light.

Metoclopramide can interact with several medicines, altering efficacy or increasing toxicity.

Major Interactions (Avoid)

• Anticholinergic agents: May reduce pro‑kinetic effect and increase anticholinergic side effects.
• CNS depressants (e.g., opioids, benzodiazepines): Heightened sedation and respiratory depression risk.
• MAO inhibitors: Potential for hypertensive crisis or severe serotonin syndrome.

Moderate Interactions (Monitor Closely)

• CYP2D6 substrates (e.g., codeine, tramadol): Metoclopramide may inhibit metabolism, raising plasma levels.
• Serotonergic drugs (e.g., SSRIs, triptans): Increased risk of serotonin syndrome.
• Antipsychotics (e.g., haloperidol): Additive extrapyramidal side effects.