[YorkieSue]

I have a friend whose dog has been on Tylan for years but now she is having difficulty affording it_it is prohibitively expensive. Does anyone know where it can be purchased on line? Also, when one buys on line how does one KNOW and TRUST that it will be the exact same potency and strain as that of the vet? I Know that sometimes trying to buy other meds on line will NOT GET YOU WHAT THE VET would give you. Thanks for any help anyone can give me. YorkieSue