I dose with less than that--I use only 1 tablet (25mg) at night with our
dog. He takes it at night, and no
vomiting at night any more. I can usually catch him before he pukes in the daytime, so I don't give it in the daytime.
Hopefully, someone else can give you (and me) more ideas. But wanted you to know about the Benadryl, particularly. You can buy that over the counter. We also tried Pepcid and Reglan, without any luck.