*Prices reflect U.S. average retail price

Loperamide, sold under the brand name Imodium among others, is a medication used to decrease the frequency of diarrhea. It is often used for this purpose in gastroenteritis, inflammatory bowel disease, and short bowel syndrome. It is not recommended for those with blood in the stool... Wikipedia

Manufacturer's Website: Imodium                                                                                                                                Average retail cost: $25/month

Crofelemer (USAN, trade name Mytesi) is a botanical drug for the treatment of diarrhoea associated with anti-HIV drugs such as nucleoside analog reverse transcriptase inhibitors and protease inhibitors. Other possible uses include diarrhoea in children, acute infectious diarrhoea, and diarrhoea in patients with irritable bowel syndrome... Wikipedia

Manufacturer's Website: Mytesi                                                                                                                   Average retail cost: $2.900/month

Diphenoxylate is a centrally active opioid drug of the phenylpiperidine series that is used in a combination drug with atropine for the treatment of diarrhea. Diphenoxylate is an opioid and acts by slowing intestinal contractions; the atropine is present to prevent drug abuse and overdose. It should not be given to children due to the risk that they will stop breathing and should not be used in people with Clostridium difficile infection... Wikipedia

Manufacturer's Website: Not Available                                                                                                     Average retail cost: $128/month