If you are in the US, you should be able to order Tylosin online, but if you have a Vet that can prescribe it, you may get it sooner.Lastly, do I need a prescription for the tylosin? I am thinking I might. I could ask my vet
https://jedds.com/products/tylosin-powder?_pos=1&_sid=6ce744e8b&_ss=r