Yeah, it'll work fine. If they're little beads (I have no idea what pills you're using) the you might wanna grind them up, but if it's already a powder then just pour it underneath your tongue. Swirl a bit of spit around with it and kept it underneath you tongue for like 15-30 minute (which can be trickier than it sounds) and swallow it when you're bored of that.
It only takes about an hour for the stomach to empty, as far as I know, even just holding it under your tongue for 10 minutes and then swallowing will probably be fine. I'v never noticed to be especially weak after eating anyway.