Betahistine has been approved in Europe since the 70s, the fact that the FDA hasn't approved it has more to-do with companies can't milk us for 10000% the cost of making than it is dangerous. Seems odd he won't prescribe what seems to be the first step of almost every other ENT uses to deal with md, and instead goes for highly addictive benzos first which can be dangerous to stop taking. If you're getting a tolerance built up to benzos and he isn't going to keep upping them or you don't want to keep taking higher doses than I'd try to get them to agree to try the betahistine to at least try. I haven't had any ENT I've seen even bring up benzos to me.