Common equine painkiller disrupts assisted reproduction technique efficiency in mares

Researchers at the Texas A&M School of Veterinary Medicine & Biomedical Sciences (VMBS) have discovered that phenylbutazone, a non-steroidal anti-inflammatory drug (NSAID) commonly prescribed in horses, can affect the ability of a mare's egg cells—called "oocytes"—to become viable embryos, which is a crucial step in assisted reproduction in horses.