I'm not familiar with Beano. It is my understanding that it is for prevention, not treatment of gas. Give penicillin in the mouth only if you think she might have entero. I haven't read the entire thread, but if her tummy feels tight, give the penicillin orally. Otherwise, don't. Gas X and entero antitoxin are two things all goat owners should have in their medicine cabinets at all times
