Hey Lainey,
OOh i am with Mirjam, I have no trouble knocking mine back.. I look forward to mine SO much that I even double the water to make them twice as big so I ca savour the flavour! Choc is the way to go, in a blender.. have you tried using a sweetener to make it a bit nicer if thats your thing?? if you dont use a blender then deffo invest in one, a straw helps too as you can avoid the taste... if you need to make them thicker so its less to knoc back then do that but make sure you then have some water afterwards...
have u tried em hot/cold/mixed with coffee etc? Whats your fave flavour?? xxx