Long ago on reddit, probably in r/collapse or r/postcollapse in one of those pants-on-head retarded threads where everyone thinks they're Rambo and talking about how they'd rush with their bugout bags to Grandpa's cabins in the Californian woods (10 yards away from 50 other cabins, I suppose), I started talking to someone about insulin. If I remember correctly, he was a grad student in some microbiology department, and he speculated that if he wanted to produce human insulin it wouldn't take him longer than a few weeks to transplant the correct genes into E. coli (which is what the big pharmaceutical companies are doing) in something called a plasmid (a little loop of DNA). He said it didn't require outrageously expensive equipment, perhaps a few grand, and most of it would only be needed once. He didn't answer all my questions, you know how it is. But the important ones he had positive answers for. Yes, he could make significant quantities with modest gear (enough for several people). It wouldn't occupy every hour of his day. The E. coli could be cultivated indefinitely without problems, provided no one sabotaged it by dumping broad-spectrum antibioitics into the vat. Etc. The stumbling block for 99.9% of people was the expertise, not the equipment or anything else most of us would run into.
Hell, probably the most important thing would be learning sterile technique, so you didn't contaminate your product. This is a learned skill but not a superpower. Everyone on this board could learn it if they were willing to put the effort in.
You know, supposing the medication KoD needs is insulin. There are others that truly look like they're impossible if industrial civilization does a nose dive. The trannies and their AIDS medicine are out of luck.