I'm new to this site. I have had MS for about 6 years and took my first Ampyra dose tonight to see if it will help my walking. I've only taken one of the two per day and read that others have done the same. I was wondering how long people took one pill vs. both. I see my neuro in a couple weeks and he only said, "Take one instead of two at first and then come see me." Thank you for your thoughts.