BENTYL vs SPIRIVA RESPIMAT

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 19, 2026·How we rate

Possible drug interaction. BENTYL and SPIRIVA RESPIMAT 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	SPIRIVA RESPIMAT
Rating	72/100	72/100
Pharmacy pays	~$2.26 /30	~$353.74 /30
Type	RX	RX
Active ingredient	DICYCLOMINE HYDROCHLORIDE	TIOTROPIUM BROMIDE
Manufacturer	Allergan	Boehringer Ingelheim
Dosage forms	Capsule, Tablet, Syrup, Injectable	Spray/Inhaler, metered
Drug class	Anticholinergic	Anticholinergic
Boxed warning	None	None
Treats	Irritable Bowel Syndrome	Pulmonary Emphysema, Chronic Bronchitis

bentyl spiriva respimat

Rating

72/100

Pharmacy pays

~$2.26 /30

~$353.74 /30

Type

Active ingredient

DICYCLOMINE HYDROCHLORIDE

TIOTROPIUM BROMIDE

Manufacturer

Allergan

Boehringer Ingelheim

Dosage forms

Capsule, Tablet, Syrup, Injectable

Spray/Inhaler, metered

Drug class

Anticholinergic

Boxed warning

None

Treats

Irritable Bowel Syndrome

Pulmonary Emphysema, Chronic Bronchitis

Frequently asked questions

Which is better-rated, Bentyl or Spiriva Respimat?

Bentyl and Spiriva Respimat are tied at 3.6 out of 5 by our independent rating.

Which is cheaper, Bentyl or Spiriva Respimat?

Bentyl costs pharmacies less to acquire — about $2.26 vs $353.74 for a 30-count supply, per the CMS NADAC survey. That gap is in the pharmacy's cost of goods, not necessarily in what you pay: your price is set afterwards by your insurer and the pharmacy.

What is the difference between Bentyl and Spiriva Respimat?

Bentyl contains Dicyclomine Hydrochloride, while Spiriva Respimat contains Tiotropium Bromide — 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.