Thanks. I had fun with that detail.

Charlemagne and Cordelia couldn't know the Ministry would decide to set up a committee- they could have decided to just ban the potion outright- so they haven't anticipated everything. Harry and Draco will have to try really hard, though, and present the research on Desire clearly.

It's not just lactose intolerance. Lactose intolerance does not generally last for hour after agonizing hour.