I think the bottom line is knowing which medications work for you, and how the effect you individually before you take them into the field.
I prefer ibuprofen for anti inflammatory effects (think headaches or muscle pain), but I know for personal experience that high doses (like 800mg, which is technically prescription strength, whether its in one 800mg pill or 4x 200mg) give me an upset stomach.
Tylenol (for me) works better for bone and joint pain, so its my go to if my old fracture bothers me packing heavy loads.
We carry hydrocodone/acetaminophen (Vicodin) because oxycodone (Percocet) makes me puke. It's for last resort, someone is badly injured use only. Either to help someone with a minor enough injury walk out, or to provide some measure of comfort while waiting for help.
We carry antibiotic ointment for small cuts and scrapes, but I purposely don't carry any oral antibiotics. Unless you are prone to recurrent infections (like the bladder infections that plague some unlucky folks), and know exactly what antibiotic you need, most folks won't know when to take antibiotics and what kind. Even doctors dont typically know with certainty whether an infection is viral or bacterial without lab testing, and if it is bacterial, it requires a culture to ensure you have the right drug for a particular infection. With the nasty potential side effects of antibiotics (nausea, vomiting and diarrhea, and well as anaphylaxis if you develop an allergy) combined with the prevalence of antibiotic resistance in the world today, I don't bring antibiotics into the field with me. Considering that I haven't needed and prescription for antibiotics in the last 10 years, it seems like a no brainer to leave them (and their risks) behind...