I'm on 10mgs right now. I've only been on it for about a week so I can't say if it's working or not, but I think the dosage is too high for me because I'm having WICKED side effects, to the point where I pretty much hate this drug. I'm going to cut back to 5mgs and see what happens. 10mgs I think is the standard dosage and I believe you can go up to 15mgs or 20mgs.