What Is Prucalopride (Motegrity)? Uses, Dosage, and What You Need to Know in 2026

Prucalopride (brand name Motegrity) is a prescription medication approved by the FDA in December 2018 to treat chronic idiopathic constipation (CIC) in adults. It belongs to a class of drugs called serotonin-4 (5-HT4) receptor agonists and works by stimulating muscle contractions in the colon to produce bowel movements. In January 2025, the first generic version became available, making it significantly more affordable.

What Is Prucalopride Used For?

Prucalopride is FDA-approved for one indication:

• Chronic idiopathic constipation (CIC) in adults — constipation with no known underlying cause that has lasted at least 3 months

In clinical trials of 2,484 patients, prucalopride significantly increased the proportion of patients achieving the treatment goal of 3 or more spontaneous complete bowel movements per week — an outcome that typically signals relief from the symptoms of CIC.

Prucalopride is also sometimes used off-label for:

• Gastroparesis: Delayed stomach emptying — the prokinetic effect may help when other options have failed
• IBS with constipation (IBS-C): Not FDA-approved for this use but sometimes prescribed when other options haven't worked
• Opioid-induced constipation: Off-label; small clinical trials have shown modest benefit

Prucalopride Dosage: How Much Should You Take?

Prucalopride comes in two tablet strengths: 1 mg (white) and 2 mg (pink). Here's the standard dosing:

• Adults under 65: 2 mg orally once daily
• Adults 65 and older: Start at 1 mg once daily; may increase to 2 mg if tolerated and needed
• Severe renal impairment (CrCl < 30 mL/min): 1 mg once daily
• End-stage renal disease requiring dialysis: Do not use (contraindicated)

How to Take Prucalopride

Prucalopride can be taken with or without food. Unlike some other GI medications, you don't need to time your dose relative to meals. Take it at the same time each day to maintain consistent blood levels.

If you miss a dose, take it as soon as you remember. If it's close to your next dose, skip the missed dose and resume your regular schedule. Don't double up.

Prucalopride has a half-life of 24–30 hours, meaning it stays in your system about a day after each dose. Steady-state levels are reached within 3–4 days of starting treatment.

Who Should NOT Take Prucalopride?

Prucalopride is contraindicated in patients with:

• A known allergy to prucalopride or any of its ingredients
• Intestinal perforation or obstruction
• Crohn's disease or ulcerative colitis (severe active inflammatory bowel disease)
• Toxic megacolon or megarectum
• End-stage renal disease requiring dialysis

Prucalopride is not approved for use in children under 18. It should be used with caution in pregnancy (discuss risks and benefits with your doctor) and is excreted in breast milk.

How Long Does It Take for Prucalopride to Work?

Many patients notice increased bowel activity within the first day or two of starting prucalopride. Clinical trials measured efficacy at 12 weeks, and studies show that improvement in bowel habits and patient satisfaction was maintained for up to 24 months of treatment. If you don't see improvement within 4 weeks, contact your doctor to discuss whether the dose or treatment plan should be adjusted.

What Drug Class Is Prucalopride?

Prucalopride is classified as a selective, high-affinity serotonin-4 (5-HT4) receptor agonist and a serotoninergic neuroenteric modulator. It differs from older 5-HT4 agonists like cisapride and tegaserod because it has over 150-fold higher selectivity for the 5-HT4 receptor compared to other receptors. This selectivity is believed to be responsible for its favorable cardiovascular safety profile, unlike cisapride (which caused cardiac arrhythmias) or tegaserod (which was withdrawn due to cardiovascular risks).

Want to understand exactly how prucalopride works in your body? See our detailed guide: How Does Prucalopride Work? Mechanism of Action Explained in Plain English