Sorry to imply this was an improper post. I reacted to the quantities of drugs on the website, and the (I think) implication that they'd provide the MD approval (?Prescription). Perhaps I jumped to conclusions... my only exercise lately.
However, I share the concerns medical professionals have expressed here regarding the inclusion of antibiotics (and many other drugs) in a PSK, BOB, or larger medical kit. IMHO the safe way to approach this is:
1) Discuss with your own doctor, or one familiar with your health history (and, ideally, that of anyone else you may medicate). Have him/her write a series of prescriptions. I use a "custom pharmacy" or "formulating pharmacy" which will dispense in atypical containers and label those: mine are in tiny ziploc plastic bags with labels. They are then, with the Instructions mentioned below, vacuum packed into one 4"x6" bag.
2) Include a list of INDICATIONS, CONTRAINDICATIONS, and adverse reactions / side effects for each drug in the kit. You may know them.. but someone else may be the one doing the pill passing. I am not uneducated in this area, but I sat down with an MD for several hours designing the proper pharmacy and being educated (and taking notes)on proper (and foolish) use. Cost me a liter of Irish Wiskey, but worth it.
3) Quantities?? I'm not preparing for an Survivalist scenario, so I pack to treat ONE EPISODE for 2 people. Buying at discount or in quantity isn't relevant to me. In fact, often I can get samples.
I guess what I'm saying is that I don't see this as a decision to take lightly. Spend as much time educating yourself about your BOB pharmacy as you spend learning to use a fire bow or other piece of gear.