evidence: Tablets or capsules of activated carbon are used in many countries as an over-the-counter drug to treat diarrhea, indigestion, and flatulence.[10] There is some evidence of its effectiveness to prevent diarrhea in cancer patients who have received irinotecan.[11] It can interfere with the absorption of some medications, and lead to unreliable readings in medical tests such as the guaiac card test.[12] Activated carbon is also used for bowel preparation by reducing intestinal gas content before abdominal radiography to visualize bile and pancreatic and renal stones.[13] A type of charcoal biscuit has also been marketed as a pet care product.[14] [...] References [edit]- ^ a b c d e f g h "Charcoal, Activated". The American Society of Health-System Pharmacists. Archived from the original on 21 December 2016. Retrieved 8 December 2016. [...] - ^ a b c "Charcoal, Activated". The American Society of Health-System Pharmacists. Archived from the original on 22 May 2014. Retrieved 23 April 2014.