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BENTYL PRESERVATIVE FREE vs SPIRIVA RESPIMAT

Independent side-by-side comparison.

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

Possible drug interaction. BENTYL PRESERVATIVE FREE 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.

bentyl preservative freespiriva respimat

Rating

72/100
72/100

Pharmacy pays

~$2.26 /30
~$353.74 /30

Type

RX
RX

Active ingredient

DICYCLOMINE HYDROCHLORIDE
TIOTROPIUM BROMIDE

Manufacturer

Abbvie
Boehringer Ingelheim

Dosage forms

Injectable
Spray/Inhaler, metered

Drug class

Anticholinergic
Anticholinergic

Boxed warning

None
None

Treats

Irritable Bowel Syndrome
Pulmonary Emphysema, Chronic Bronchitis

Frequently asked questions

Which is better-rated, Bentyl Preservative Free or Spiriva Respimat?

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

Which is cheaper, Bentyl Preservative Free or Spiriva Respimat?

Bentyl Preservative Free 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 Preservative Free and Spiriva Respimat?

Bentyl Preservative Free 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.