answer:Straight caffeine is easier on your stomach than caffeine with all the other stuff we use to get it in our bodies. For example, coffee + milk + sugar is a lot harder on your stomach than just caffeine, same with energy drinks, same with 5 hour energy, same with chocolate, things like that. You can get straight caffeine at most vitamin shops, or herbs that have caffeine in them (guarana) if you’d rather try that. You can get something like No Doze (straight caffeine) at just about any drug store or large grocery store. Be careful with doses, 200 mg at a time really is a lot. You still want to make sure you get fluids so caffeine and a glass of water is a lot easier on your stomach than the alternatives.