I know someone who has to take something like this for the heart. You put a glycerin tablet under your tongue and let it dissolve, and the chest pains go away.

What I'm assuming they've done is used a press like how they make aspirin. A mixture of sugar and THC extract are blended together in precise amounts and put through a machine that exerts a few tons of pressure on the powder, forcing it in to a mold and compacting it to a block. Seriously, watch "How It's Made". That show is amazing when you're high.

YouTube - ‪How It's Made Pills‬‏

Watch. Learn. Enjoy.