once upon a time
When I was a college student, a very long time ago, I dropped some acid with a classmate, and then, I guess, partly out of a sense of dedication and partly out of a sense of adventure, I went to aikido practice. My classmate went elsewhere.
About half way through the practice the drug began to take effect. Although I didn't want anyone to know what was going on, especially my teacher, I found myself becoming extra-ordinarilly careful with my uke. I was a brown belt at the time and among the highest ranking students in the class. I felt such an overwhelming sense of responsibility for the welfare of my partner that I almost became petrified with fear.
Although I learned something spiritually from the experience, I also vowed to never practice aikido in an altered state again, because to do so, I feel, would be very self centered.
If my partner were ever to become injured while I was on drugs or even medication, I think that the level of the sense of guilt would be very high.
I would also find it difficult to respect a teacher that used any kind of drug during class. I think that it would be an expression of self centeredness that indicates that the teacher is not giving the students the attention that they deserve. It demonstrates a lack of a sense of responsibility to him or her self, the students and the art.
There's a time and place for everything. I recommend habitually keeping the aikido dojo a place that remains basically pure.