I switched over to 450mg of buproprion in three 150mg tablets. Before I was taking one 300mg and one 150mg. Both are generics made by Watson, but I swear the 150's aren't working. They look different, and I even called Watson to ask about the imprint. They confirmed it was correct, but it's like the bottom dropped out. Have an apt with the pdoc on Monday. We'll see what he says.