Leslie! I know what Amforol® is!!?
Kanamycin/Bismuth/Aluminum Magnesium Silicate (Amforol®)
Kanamycin is an antibiotic in the aminoglycoside class. Bismuth subcarbonate and aluminum magnesium silicate are antidiarrheals. The combination of these ingredients in Amforol is used for the treatment of susceptible intestinal bacterial infections and the associated diarrhea. Use caution when treating very young animals or those under 5 pounds, as the recommended dosage may produce kidney or hearing damage. Contact your veterinarian if your pet experiences hearing loss, loss of balance, increase or decrease in drinking, lack of appetite, vomiting, depression, or muscle twitching while being treated with the combination of kanamycin, bismuth, and aluminum magnesium silicate.
Keep this and all other medications out of the reach of children and pets.
http://www.peteducation.com/article.cfm?cls=0&cat=1459&articleid=3260