Hey all, got a question. My 15 month old was given a rabies vaccine two days ago and ever since she has not been the same. ALOT less energetic. Also, we cant get rid of fleas Frontline doesn't work at all and the Rx something worked for two weeks and they come back. Started feeding here a tablespoon of natural yeast and them have vanished. Wondered if the yeast might have something to do with it. Thanks in advace