I've tried both and had an unacceptable reaction so cannot take. But FYI the reason you need a higher dose is because they can make RLS worse, so it's probably become worse, and you need a higher dose. When I first read about some medications that can make it worse, I asked my doctor and he said yes, but they don't really know what dose starts making it worse, so they start you on a low dose. Didn't matter for me as could not take it but found it worrisome that the medication that helps can makes it worse to where you will always have to take and at higher dosage. I've tried so many things that I'm hoping someone has something new to try....LOl