Looking for a reliable online formulary or pharmacy. My vet and I are not doing well together.

I live in a small town. We have one vet. He insist on prescribing pills to animals that cannot be pilled. He refuses to consider the use of any antibiotic except amoxicillin. He will not prescribe anti-inflammatories to an animal without an antibiotic. He will not allow animal owners to administer injectables, even if they have an animal health background. I'm tired of this. I'm tired of fighting this guy to keep my animals healthy. I like him as a person, but his methods are really wearing on me. So, I will take over the treament of my animals. If anyone knows of a reliable place to buy injectable antibiotics and ant-inflammatories, I'd appreciate it. Edit: I need one that does not need a scrip. Next nearest vet is 100 miles away.