I've tried again now - with the html5 version - and well it works :-| - to be exact you have to go to the Storage Room and
[SPOILTER]
not just Use the R pills but also (or just) look at the R pills - if you already checked naphthalene it should say that their similar to something he's already seen - after that if you got his room and interact with blankets in the wardrobe he should take them
Is this exactly what you did?