Medical Information Only: This medication is not sold on this site. The information provided is for reference purposes only. Please consult your local physician or pharmacist for treatment.

Bentyl Side Effects Center

Medically reviewed by Min Clinic Staff | Updated: January 2026

Bentyl (Dicyclomine) side effects drug center

 

PROFESSIONAL

CONSUMER

SIDE EFFECTS

 

Bentyl Side Effects Center

What Is Bentyl?

Bentyl (dicyclomine) is an anticholinergics prescribed for irritable bowel syndrome (IBS). Bentyl is available as a generic drug.

What Are Side Effects of Bentyl?

Common side effects of Bentyl include

Cases of thrombosis, thrombophlebitis and injection site reactions such as local pain, edema, skin color change and even reflex sympathetic dystrophy syndrome have been reported following inadverent IV injection of BENTYL.

Adverse Reactions Reported With Similar Drugs With Anticholinergic/Antispasmodic Action

Gastrointestinal: anorexia,

Central Nervous System: tingling, numbness, dyskinesia, speech disturbance, insomnia

Peripheral Nervous System: With overdosage, a curare-like action may occur (i.e., neuromuscular blockade leading to muscular weakness and possible paralysis).

Ophthalmologic: diplopia, increased ocular tension

Dermatologic/Allergic: urticaria, itching, and other dermal manifestations;

Genitourinary: urinary hesitancy, urinary retention in patients with prostatic hypertrophy

Cardiovascular: hypertension

Respiratory: apnea

Other: decreased sweating, sneezing, throat congestion, impotence. With the injectable form, there may be temporary sensation of light-headedness. Some local irritation and focal coagulation necrosis may occur following the intramuscular injection of BENTYL.

Read the entire FDA prescribing information for Bentyl (Dicyclomine)

© Bentyl Patient Information is supplied by Cerner Multum, Inc. and Bentyl Consumer information is supplied by First Databank, Inc., used under license and subject to their respective copyrights.