Reglan Should Be Taken 30 Minutes Before Each Meal and at Bedtime
According to the FDA-approved prescribing information, Reglan (metoclopramide) must be administered 30 minutes before each meal and at bedtime, regardless of whether you're treating gastroesophageal reflux or diabetic gastroparesis 1. This is not a morning-versus-bedtime question—it's a four-times-daily medication with specific timing requirements.
Dosing Schedule for Reglan
For Gastroesophageal Reflux (GERD)
- Standard dosing: 10-15 mg four times daily
- Timing: 30 minutes before breakfast, lunch, dinner, AND at bedtime
- Maximum daily dose: 60 mg
- Duration: 4-12 weeks maximum 1
For Diabetic Gastroparesis
- Standard dosing: 10 mg four times daily
- Timing: 30 minutes before breakfast, lunch, dinner, AND at bedtime
- Maximum daily dose: 40 mg
- Duration: Shortest duration possible, avoid exceeding 12 weeks 1
Why This Timing Matters
Reglan works by stimulating gastrointestinal motility, so it must be taken before meals to be present in your system when food arrives. The bedtime dose addresses nighttime reflux or gastroparesis symptoms. This is fundamentally different from blood pressure medications where morning versus bedtime timing affects cardiovascular outcomes.
Critical Safety Warnings
The most important consideration with Reglan is not when you take it, but how long you take it. The FDA mandates:
- Maximum treatment duration: 12 weeks for GERD 1
- Avoid use beyond 12 weeks for gastroparesis unless unavoidable 1
- Risk of tardive dyskinesia (TD) increases with duration of use and total cumulative dose 1
- Contraindicated in patients with history of TD or dystonic reactions 1
Dosage Adjustments Required
You must reduce the dose if you have:
- Moderate/severe liver impairment: 5 mg four times daily (max 30 mg/day for GERD, 20 mg/day for gastroparesis) 1
- Kidney impairment (CrCl ≤60 mL/min): 5 mg four times daily or 10 mg twice daily (max 20 mg/day) 1
- End-stage renal disease: 5 mg twice daily (max 10 mg/day for gastroparesis) 1
- Elderly patients: Start with 5 mg four times daily, titrate based on response 1
Common Pitfall to Avoid
Do not confuse Reglan timing with antihypertensive chronotherapy. The research evidence you may have seen about morning versus bedtime dosing applies to blood pressure medications like telmisartan, olmesartan, and ramipril 2, 3, 4, 5, 6—not to prokinetic agents like Reglan. These are completely different drug classes with different mechanisms and timing requirements.
The bedtime dose of Reglan is mandatory as part of the four-times-daily regimen, not an alternative to morning dosing. Missing the bedtime dose means inadequate 24-hour symptom control.