Does anyone here have a chemistry background? I was wondering what the process is to get polysorbate 80 to bind to loperamide. You can get loperamide from any drug store OTC and polysorbate 80 is sold online as Tween80 for like $50 a gallon. If you mixed the lopermide and spun it in a centrifuge (used ones are available for under $250), the very heavy loperamide (based on molar mass) should separate to the bottom of both the water, and the filler/binder in the loperamide, leaving you with pure loperamide. Polysorbate 80 is highly soluble in water. Lopermide is somewhat soluble. Both are very soluble in alcohol. Mixing the pure loperamide and polysorbate 80 in alcohol would allow them to interact, but this might not necessarily mean that they will bind, allowing the polysorbate 80 to coat the loperamide molecules. Would they bind at all on their own, and if not, what else needs to happen to get them to stick?