Popular Arthritis Drug For Dogs May Have Severe Side Effects, F.D.A. Says NYT | Top Stories By: Emily Anthes 19 December 2024 at 22:36 The agency recommended that the maker of Librela update its label to reflect the possibility of more serious adverse reactions. © Octavio Jones for The New York TimesSince Librela became widely available last year, some pet owners have reported that their dogs became seriously ill, lost the ability to walk or stand or even died shortly after receiving the drug.