Hey- do you have a rice, corn, or barley heat pad? I've used both rice and feed-corn (the really dry stuff) in bags that you can nuke. It's like a heating pad, but heavy and it wraps nicely around you. You can buy them in various places, but mine were all homemade. I don't know that it'll be better than drugs, but it might be another thought for you.
Those recipes look awesome! Another favorite on my work computer because I'm, like, so focused.