For bystanders, I previously recommended kratom, which is probably one of the most interesting drugs that is legal in the United States, to gwern as a way to enter a highly motivated state. For me it seems to act as an ugh field off switch. You can buy kratom from an online store run by a Less Wrong user.

To answer your question, it's not something you want to be using more than a couple times a week, and recently I've been experiencing some digestive problems (unrelated to kratom) which have made me reluctant to consume anything that isn't food.