MIRALAX vs SODIUM BICARBONATE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 22, 2026·How we rate

Possible drug interaction. MIRALAX and SODIUM BICARBONATE 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	SODIUM BICARBONATE
Rating	New	60/100
Pharmacy pays	$1.11 /g	$0.15 /mL
Type	RX	RX
Active ingredient	POLYETHYLENE GLYCOL 3350	SODIUM BICARBONATE
Manufacturer	Braintree	Hospira
Dosage forms	Powder	Injectable, Solution, Powder, Tablet
Drug class	Osmotic Laxative	Osmotic Laxative
Boxed warning	None	None
Treats	Constipation	Renal Tubular Acidosis, Dyspepsia, Gastroesophageal Reflux

miralax sodium bicarbonate

Rating

New

60/100

Pharmacy pays

$1.11 /g

$0.15 /mL

Type

Active ingredient

POLYETHYLENE GLYCOL 3350

SODIUM BICARBONATE

Manufacturer

Braintree

Hospira

Dosage forms

Powder

Injectable, Solution, Powder, Tablet

Drug class

Osmotic Laxative

Boxed warning

None

Treats

Constipation

Renal Tubular Acidosis, Dyspepsia, Gastroesophageal Reflux

Frequently asked questions

What is the difference between Miralax and Sodium Bicarbonate?

Miralax contains Polyethylene Glycol 3350, while Sodium Bicarbonate contains Sodium Bicarbonate — 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.