I am in favor of all drugs for Companions. If you have any concerns about PvE/PvP balance, then do it, spice up the game a bit, and we'll see. I bet we'd see some chaos and that sounds fun.
But first can we get Rot Gut added to food options? And tv dinner, and cheezy poofs, etc all food items should be delicious to a companion.
Additionally, I'd like to see some perk options for Companions too. Maybe you cannot choose any perks until comp is level 24. Then you pick them all. Whatever, but comps are too weak now as it is.