Of course not. Homosexuality is not a disease and "curing" it it's like "curing" black skin, because we all know that white is so much better.

Besides that, if it's a maintenance drug, then definitely no to parents forcing their children to take it. Adults, maybe, -if they make a concious decision to do it and only with strict supervisions of doctors and psychologists.

Sadly, if someone invented something like that, it would probably be made legal without much discussion - I'm afraid that even forcing the children would not be a big controversy. Most of the politicians are homophobic like whoa here.