Retired for 39 years and I had no idea that such a program exists.
The AF uses a SICK (Self-Initiated Care Kit) Program questionaire for each member and eligible dependent. At Nellis AFB it says 3 meds per month per person.
Stuff like Tylenol, Ibuprofen, Flonase, Alegra, Mucinex, Robitussin DM, eye drops, and Nicotine patch, among a few.
Download the form and drop it off next time you go to pick up a prescription.
I got this information from Military Pharmacies May Change List of Free Over-the-Counter Drugs Offered and it indicates policies will change for each service and installation.
