My doctor prescribed ketamine nasal spray as an abortive a few weeks ago. It didn't work well for me, so this week he prescribed an oral version to take 3 times a day. He's starting me on a low dose and says we can gradually increase it. I have a constant migraine that gets acute 2 or 3 times a week. I've tried researching the drug online and have found info (including an article on this site) about the IV and intranasal forms, but does anyone have any experience with the oral version?