My cats both used to use this formula to try to tame their hairball problems (both being long haired cats we had plenty of them!). It worked pretty well, although they still had furballs and general vomit attacks (sometimes of just food). Once one of the cats was diagnosed with a sensitive stomach, we switched them both to the Science Diet Sensitive Stomach food and neither gets sick as often (including furballs!). Overall, I have enjoyed feeding them the Science Diet brand (and they seem to enjoy it!)