 I mean, it's not a complex formula. It's sterile water, propylene glycol, ethyl alcohol, and penobarbital. He did the work during normal business hours, but most of the staff had no idea what he was doing. Making and testing the drugs took a few weeks. Then they would pick up finished product and take it back to Huntsville. Huntsville is where Texas executes its prisoners. The pharmacist said right away didn't make much money from the deal.