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RELISTOR vs SYMPROIC

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated June 7, 2026·How we rate

Possible drug interaction. RELISTOR and SYMPROIC are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Rating

New
New

Pharmacy pays

Type

RX
RX

Active ingredient

METHYLNALTREXONE BROMIDE
NALDEMEDINE TOSYLATE

Manufacturer

Dosage forms

Injectable, Tablet
Tablet

Drug class

Opioid Antagonist
Opioid Antagonist

Boxed warning

None
None

Treats

Constipation
Constipation

Frequently asked questions

What is the difference between Relistor and Symproic?

Relistor contains Methylnaltrexone Bromide, while Symproic contains Naldemedine Tosylate — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.