Jabberwocky
Frumious Bandersnatch
I am predominately a meth user now, but upon reflection I would say that a ‘bell ringer’ IV shot of coke is a better rush than the rush from meth. However, the problem is you only get one a night but keep pointlessly trying every 20 minutes to replicate it with further shots. With the OP’s heart condition I wouldn’t be banging any stims thogh.