Antibiotics will become an important commodity in the P.A.W. They can mean the difference between life and death in a world where 1st World medicine isn’t readily available. Carrying around a full tube of antibiotics can be unwieldy and cumbersome. Also, if antibiotics are scare/valuable enough, you won’t want to be seen carrying around a large tube of it by anyone else. There are single use antibiotics commercially available but they are more expensive than it’s worth. Brian Green, from Brian’s Backpacking Blog, writes a post on how to make your own single use antibiotic packs.