UPDATE March 10, 2015:
Attention Veterinarians, ACC&D, and naysayers of megestrol acetate as used for feline birth control:
A Google search of Feralstat or megestrol acetate as used for feline birth control always turns up the same old negative statements by the ACC&D for adverse side effects. In 2003 a French study was done on the adverse side effects of MA for birth control. Their findings will indeed surprise you! Any naysayer of MA as a feline birth control needs to read this report. Keep in mind that we are using VERY SMALL amounts of MA than what was used in the study. I have translated the entire report from French to English. You can download a PDF copy of the study HERE. Read it and see for yourself that the adverse side effects of MA is miniscule. Regarding both cats & dogs, the study analyzed medical reports, going back to 1994,
which rendered .074 cases of adverse reactions per
100,000 MA tablets administered. That is less than one
case in a million tablets used!