For over 10 yrs now Pet Smart has been my only source of Antibiotics without an RX. Fish meds are the exact same thing as human grade-they are imperfect and broken pills re-tabbed and packaged for pet use-so no FDA approval is needed and they cost about 70% less than RX ones. Amoxycillin, Cephlexin, Pennicillin-all are readily available in the aquarium section of most pet stores. Of course they are labled "not for human use" but then again, so does a bottle of Equipoise. And don't expect your Dr to give you the green light on this. Every year Drs receive $$$ kickbacks from RX cos for pushing their products. Imagine how much $$$ the RX industry would lose if everybody bought pet meds instead of human grade? Last time I checked 1 500 mg Amoxycillin tab costed about $2.00 $2.50. The same 500 mg pills cost $4.00 for 8 of them for the fish tabs making them about .50 each. And before anyone accuses me of bullshitting, I'm not. I'm serious.