Caffeine powder is pretty interesting. In college, my roommates and I stored half a kilo of anhydrous white powder in a closet. It&#x27;s incredibly versatile: you can mix it into drinks or food, put it under your tongue, and even insufflate it (higher bioavailability, shorter duration).<p>You have to be careful with it though, because like the article says, it doesn&#x27;t take much to kill a person. Usually when you order caffeine powder it comes with a little 50mg scoop so you can track consumption.