A 14 day supply of these antibiotics is available without charge at the Publix grocery store pharmacies:
•Cephalexin (capsules and suspension only)
•Ciprofloxacin (excluding Ciprofloxacin XR)
•Doxycycline Hyclate (capsules only)
Wegman's grocery stores have pharmacies with an even wider range of free antibiotics. (Here's Wegman's press release on its program.)
Walmart has a $4 prescription program.