IMPORTANT .....my cat drank medicated fish water!! 01/26/2008 NEED INFO: <<Hello, Andrew here>> I turned my back for one second, and my cat was drinking the medicated fish water I'd just prepared! It was Furan (1/2 tablet in a 5 gallons of water) for 1 sick fish. He couldn't have gotten more than a few licks......will this hurt him?? I've searched the net, and can't find any info Thanks so much Carol Herard. <<This medication is classed as not harmful by ingestion/swallowing. I would not be overly concerned. Just keep fresh drinking water available for the cat. <<Thanks for the question. A Nixon>>