MIRALAX vs POTASSIUM CHLORIDE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 18, 2026·How we rate

Possible drug interaction. MIRALAX and POTASSIUM CHLORIDE 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.

Attribute	MIRALAX	POTASSIUM CHLORIDE
Rating	New	72/100
Pharmacy pays	$1.11 /g	$0.04 /mL
Type	RX	RX
Active ingredient	POLYETHYLENE GLYCOL 3350	POTASSIUM CHLORIDE
Manufacturer	Braintree	Granules
Dosage forms	Powder	Injectable, Capsule, extended release, Solution, Powder, Tablet, Tablet, extended release
Drug class	Osmotic Laxative	Osmotic Laxative
Boxed warning	None	None
Treats	Constipation	Hypokalemia

miralax potassium chloride

Rating

New

72/100

Pharmacy pays

$1.11 /g

$0.04 /mL

Type

Active ingredient

POLYETHYLENE GLYCOL 3350

POTASSIUM CHLORIDE

Manufacturer

Braintree

Granules

Dosage forms

Powder

Injectable, Capsule, extended release, Solution, Powder, Tablet, Tablet, extended release

Drug class

Osmotic Laxative

Boxed warning

None

Treats

Constipation

Hypokalemia

Frequently asked questions

What is the difference between Miralax and Potassium Chloride?

Miralax contains Polyethylene Glycol 3350, while Potassium Chloride contains Potassium Chloride — 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.