May 28, 2017
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(difenoxin and atropine sulfate) Tablets


Each five-sided dye free MOTOFEN® tablet contains: 1 mg of difenoxin (equivalent to 1.09 mg of difenoxin hydrochloride) and 0.025 mg of atropine sulfate (equivalent to 0.01 mg of atropine).

Difenoxin hydrochloride, 1-(3-cyano-3,3-diphenylpropyl)-4-phenyl-4-piperidinecarboxylic acid monohydrochloride, is an orally administered antidiarrheal agent which is chemically related to the narcotic meperidine. The structural formula is:

Difenoxin hydrochloride - Structural Formula Illustration

Atropine sulfate is present to discourage deliberate overdose.

Atropine sulfate, an anticholinergic, is benzeneacetic acid, α-(hydroxymethyl)-, 8-methyl-8-azabicyclo[3.2.1]oct-3-yl ester, endo-(±)-, (2:1) (salt), monohydrate and has the following structural formula:

Atropine sulfate - Structural Formula Illustration

Inactive Ingredients: calcium stearate, cellulose, lactose, corn starch.

What are the precautions when taking difenoxin and atropine (Motofen)?

Before taking difenoxin with atropine, tell your doctor or pharmacist if you are allergic to either drug; or to hyoscyamine; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: liver disease (e.g., obstructive jaundice, cirrhosis), diarrhea caused by certain types of infections (Clostridium difficile-associated diarrhea following recent antibiotic therapy, bacterial infection of the gut caused by E. coli, Salmonella, Shigella).

Before using this medication, tell your doctor or pharmacist your medical...

Read All Potential Precautions of Motofen »

Last reviewed on RxList: 4/5/2017
This monograph has been modified to include the generic and brand name in many instances.

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