I usually take 800mg just at bedtime. My pdoc writes my Rx though for up to 1200mg per day. He said I can take 400mg during the day if I need it. Or 1200mg at night. He gives me a lot of control as to how much I take and when. I wouldn't say my anxiety is completely under control all the time, but this works well enough for me. I'm **** about not being on meds that are going to mess me up congnitively. I like the gabapentin because it doesn't mess me up but takes enough of the edge off when needed.