The bottle in the middle is Franzbranntwein, rubbing alcohol. I use it when it's too late already, when the muscles are overstretched. I don't know if it helps, but the psyche likes it when something can be done.
Magnesium is preventive. It prevents the muscles from cramping. Calcium is good for the bones.
I don't take Aspirin before practicing, as I want to feel my body. Awareness substitutes this pill in my case.