I happened across a story, which I cannot seem to be able to find again for blood or money, that mentioned a lot of veterinary medicines like Fish Mox and Ivermectin will no longer be available without a vet's prescription starting mid-June. I know Amazon stopped selling Fish Mox a while ago, but now the feds are stepping in and making some new regulation making it illegal to buy them over the counter anywhere.
If you normally keep a supply of common antibiotics on hand, now might be a good time to stock up.