Way back when I was a college lad and these were all those crazy "art majors" talked about. They, and everyone else simply loved the stuff and my lab partner just happened to have it in good supply. His kid was prescribed the stuff and didn't take it, so bottles upon bottles of it were just there for us to use whenever those big tests came up or we had to stay up all night working on whatever project we were in the middle of. As a bonus, we didn't have to buy our smoke back then because we could just trade a few of these to those art kids for some of the best smoke on campus.
Anyway...I did IRs and XRs. Its nothing like cocaine so if you're thinking it is get that out of your head and just accept this stuff for what it does. I didn't really enjoy it that much tbh, but it helped you get through when you were running on no sleep. I once worked for 4 days in a row (hard labor) on no sleep. I didn't intend to go that long, the first day I took one XR to help me through and couldn't sleep, so I ended up having to re-dose the next morning, and the morning after...and so on. ><
Sorry for the long intro, just wanted to comment about my past use. I don't use these anymore, but here was my method for getting the most out of the XRs:
1. Pour beads into shot glass.
2. Crush beads with handle of small screw driver, or anything you have laying around about that size.
3. Fill shot glass with water, beads, powder, and all.
4. Drink shot, if you're worried about losing something lick crushing device and add some more water to the glass to get whatever is left over.
That's the best I could get out of them. For IRs I would break the capsule open and take about 1/4th - 1/2 of the power inside and save the rest for a "booster" later in the day. It didn't take much for me to get what I needed out of them and no matter how little I took there was always a "crash" at the end so I was really careful about not over doing it.
I hope that helps you out.