1. Clinical Overview
A fixed-dose combination (FDC) of Levosulpiride, a prokinetic and atypical antipsychotic (benzamide derivative), and Esomeprazole, a proton pump inhibitor (PPI). This combination is primarily used for the management of gastroesophageal reflux disease (GERD), non-ulcer dyspepsia, and other acid-peptic disorders where impaired gastric motility and hypersecretion of acid are concurrent issues. Levosulpiride enhances gastric emptying and motility, while Esomeprazole provides potent and prolonged suppression of gastric acid secretion.
| Onset | Duration | Bioavailability |
|---|---|---|
| Levosulpiride: Prokinetic effects begin within 1-2 hours. Esomeprazole: Acid suppression begins within 1 hour, with maximal effect after 5 days of repeated dosing. | Levosulpiride: 8-12 hours. Esomeprazole: Up to 24 hours (due to irreversible inhibition of H+/K+ ATPase). | Levosulpiride: Approximately 25-30% (due to significant first-pass metabolism). Esomeprazole: 64-90% (increased to 89-90% with repeated dosing). |
2. Mechanism of Action
The combination works synergistically. Levosulpiride acts as a selective antagonist at presynaptic dopamine D2 receptors in the chemoreceptor trigger zone (CTZ) and gastrointestinal tract, leading to antiemetic and prokinetic effects. It also has mild anxiolytic properties. Esomeprazole is the S-isomer of omeprazole and provides irreversible inhibition of the H+/K+ ATPase enzyme system (proton pump) at the secretory surface of gastric parietal cells, thus inhibiting the final step of acid production.
3. Indications & Uses
- Gastroesophageal Reflux Disease (GERD) with associated dysmotility
- Non-ulcer (Functional) Dyspepsia
- Acid-peptic disorders with delayed gastric emptying
4. Dosage & Administration
Adult Dosage: One tablet (Levosulpiride 75mg + Esomeprazole 40mg) twice daily, 30-60 minutes before meals. For maintenance in GERD, once daily may be used.
Administration: Swallow the tablet whole with a glass of water. Do not crush, chew, or break. Take on an empty stomach, at least 1 hour before a meal for optimal acid suppression by esomeprazole. Maintain a consistent timing.
5. Side Effects
Common side effects may include:
- Headache
- Dizziness
- Diarrhea or constipation
- Abdominal pain
- Flatulence
- Dry mouth
- Increased serum prolactin (leading to galactorrhea, gynecomastia, menstrual irregularities)
6. Drug Interactions
| Drug | Effect | Severity |
|---|---|---|
| Ketoconazole, Itraconazole, Posaconazole | Esomeprazole reduces gastric acidity, decreasing absorption of these azole antifungals. Efficacy may be reduced. | Major |
| Digoxin | Increased gastric pH may increase bioavailability of digoxin, potentially leading to toxicity. | Moderate |
| Clopidogrel | Esomeprazole (a CYP2C19 inhibitor) may reduce the antiplatelet effect of clopidogrel (a prodrug activated by CYP2C19), increasing cardiovascular risk. | Major |
| Diazepam, Phenytoin, Warfarin | Esomeprazole may inhibit CYP2C19, increasing plasma levels of these drugs. Monitor and adjust dose. | Moderate |
| Methotrexate | Concomitant PPI use may decrease renal clearance of methotrexate, increasing toxicity risk. | Major |
| Levodopa, Bromocriptine | Levosulpiride antagonizes dopamine receptors, directly opposing the effect of these anti-Parkinson drugs. | Major |
| Other CNS depressants (Alcohol, Benzodiazepines) | Additive sedative effects with levosulpiride. | Moderate |
| Drugs prolonging QT interval (e.g., Erythromycin, Fluoroquinolones, TCAs) | Additive risk of QT prolongation and torsades de pointes with levosulpiride. | Major |
7. Patient Counselling
- DO take the tablet on an empty stomach, at least 1 hour before a meal.
- DO swallow the tablet whole with water; do not crush or chew.
- DO inform your doctor if you are pregnant, planning pregnancy, or breastfeeding.
- DO report any involuntary muscle movements, restlessness, or tremors immediately.
- DONT take with other antacids or sucralfate; if needed, take at least 2 hours apart.
- DONT stop the medication abruptly if taken for a long time; taper under doctor's advice to avoid rebound acid hypersecretion.
- DONT take a double dose to make up for a missed dose.
8. Toxicology & Storage
Overdose: Levosulpiride: Severe extrapyramidal reactions (dystonia, oculogyric crisis), sedation, coma, hypotension, QT prolongation. Esomeprazole: At very high doses, blurred vision, confusion, drowsiness, dry mouth, flushing, headache, nausea, tachycardia.
Storage: Store below 30°C, in a cool, dry place. Protect from light and moisture. Keep out of reach of children. Do not use after the expiry date printed on the pack.