Your vet is a HSUS-funded dumbass who just wants to spay dogs (pit bulls).

Does your bitch really have an infection, or is your vet just trying to use "scare tactics" on you to force a panicked c-section? Also, for him to say that mastitis will "spread" to the uterus is an outright lie (or quackery at best), so I agree with your decision never to go to this POS again.

If your bitch doesn't actually have an infection, then I wouldn't give her anything. If she does have an infection, then penicillin is a low-budget solution, and even amoxicillin isn't the best choice.

If you have The Pit Bull Bible, there is a discussion in Chapter 10 (Animal Husbandry & Raising Pups) on what to give bitches for mastitis ... and the 3 best choices are TMZ, Clavamox, or Cephalexin.

As for getting the milk to go away, there are a lot of alleged herbal remedies & such (dandelion, etc.), but all I have ever done is cut their feed back a bit and exercise them, and that seems to do the trick.

I have hear people mention other tricks, though none of them comes to mind at the moment, but I think antibiotics and reduced feed intake are all you really need with the rest of it being a waste of time.

Jack