1. Lactation potion is when a character is shown COMPLETELY flat as they’re using a bra of holding you also have to use it when they’re gonna fight a skeleton but if there weapon glows white/yellow don’t give it to them
2. Main part for butt potion is if they’re a thief or they wear dark clothes aka the main part of their outfit is black or grey, also if a thigh potion is used a butt potion (unless skeleton) needs to be used, I also believe that if a jiggle potion is used that it’s preferred you also use a butt potion if no skeleton.
3. If you hold left click on the potions they give you the rules for the potion it also gives you info on your items on the right. (Except on the bimbofied day where they’re given silly text because your character themself can’t remember the rule for it)