To be honest, homemade medicine doesn't sound like a very safe or logical treatment for anyone. Basic college text books aren't going to contain the information you need for this sort of thing, and a quick google search on cluster headaches reveals that any common treatment for symptoms are not going to be able to be made in your garage.
I'm going to have to back the other guys on this one, as it sounds extremely misguided, if not outright shady.
If prescription costs are causing you problems, you may want to look into finding a job (or second job). At least that way you could support your loved one safely, if that is indeed your goal.