I buy antibiotics annually (check expiration dates) at my feed store. It's my understanding that many antibiotics are available through Amazon in the States. I store them in a sealed jar, and store that in my animal first aid kit (a rubbermaid tote). The tote itself ensures that the contents are not exposed to direct sunlight which can damage the medicines. I always have a couple different types of antibiotics on hand but what is available changes year to year (I live in a third-world nation, Panama); Enroflox (Baytril) is almost always available. Their first aid kit also contains two different types of wormer, amprolium for cocci, sports tape for injuries, non-stick gauze pads, a bag of cotton balls, a jumbo box of q-tips, iodine, blu-kote spray, a plastic container with a tight fitting lid to store a few pounds of epsom salt, a tube of k-y jelly, a box of nitrile disposable gloves, individually wrapped one-use scalpels, blood-stop (powder to do just that, stops external wounds from bleeding), a couple of tubes of super glue, a pair of sharp kitchen scissors (used mostly to trim fluffy butts, but also to effortlessly cut that sport tape that I mentioned), a feather duster (to comfort just hatched chicks before the rest of their clutch hatches), liquid and powdered vitamin/mineral supplements & enrovet, individually wrapped syringes to administer vaccinations or some types of antibiotics, and vacuum sealed jars of flaked fish food (incredibly high in protein that I use with a sick bird to boost their protein intake dramatically; was the best quick protein supplement I could get here, and I try to pack as much nutrition as I can in as little volume as possible with a sick bird). I'm sure there's other stuff in their kit as well, but I'd have to unpack the box full of boxes, full of stuff for my feathered family to give a full accounting ;p
I'm sure that my first aid kit sounds like overkill but I don't drive and I live out in the countryside. For me to get to the store to buy these supplies requires me to either catch a bus or call a cab, and depends upon the store actually having what I need in stock (often, that is not the case). Sometimes, time is of the essence with a sick or injured bird. I prefer to be prepared for a bad situation than be sorry for a lack of forethought.
I'm sure that my first aid kit sounds like overkill but I don't drive and I live out in the countryside. For me to get to the store to buy these supplies requires me to either catch a bus or call a cab, and depends upon the store actually having what I need in stock (often, that is not the case). Sometimes, time is of the essence with a sick or injured bird. I prefer to be prepared for a bad situation than be sorry for a lack of forethought.