BENTYL PRESERVATIVE FREE vs ISOPTO ATROPINE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 21, 2026·How we rate

Possible drug interaction. BENTYL PRESERVATIVE FREE and ISOPTO ATROPINE 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	BENTYL PRESERVATIVE FREE	ISOPTO ATROPINE
Rating	72/100	New
Pharmacy pays	~$2.26 /30	$6.87 /mL
Type	RX	RX
Active ingredient	DICYCLOMINE HYDROCHLORIDE	ATROPINE SULFATE
Manufacturer	Abbvie	Alcon
Dosage forms	Injectable	Solution
Drug class	Anticholinergic	Anticholinergic
Boxed warning	None	None
Treats	Irritable Bowel Syndrome	Bradycardia, Heart Arrest, Poisoning

bentyl preservative free isopto atropine

Rating

72/100

New

Pharmacy pays

~$2.26 /30

$6.87 /mL

Type

Active ingredient

DICYCLOMINE HYDROCHLORIDE

ATROPINE SULFATE

Manufacturer

Abbvie

Alcon

Dosage forms

Injectable

Solution

Drug class

Anticholinergic

Boxed warning

None

Treats

Irritable Bowel Syndrome

Bradycardia, Heart Arrest, Poisoning

Frequently asked questions

What is the difference between Bentyl Preservative Free and Isopto Atropine?

Bentyl Preservative Free contains Dicyclomine Hydrochloride, while Isopto Atropine contains Atropine Sulfate — 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.