I’m on a dose of 6 mg, which I understand from my doctor is one of the higher doses, but she has some patients who are successful on an even higher dose. I think I only read one report with patients on 6 mg, so that’s as high as I decided to go because I don’t really notice a difference over 4.5 (but nothing worse either so I’m finishing the 90-day supply).

You might consider if you want to try a higher dose and if not, for most medications if there’s not an improvement in 3-6 months (I’m thinking of my rheumatology medication), it’s a no-go. For me the difference was slight; I only noticed improvement in fatigue. When I stopped taking it, I noticed. That’s a possibility too. If you take a medication “holiday” and you still feel the same, maybe that tells you it’s not the right fit?