Since a couple of weeks my mother is having a problem. While walking or getting up to walk (after sitting on the couch watching TV) or a few times after getting up from bed, her knees buckle as she tries to walk and she collapses like a house of cards in a heap on to the floor. During that moment, she does not respond to any verbal signals (like me asking her to stand straight, I am holding her while she walks or gets up - all the time) and seems lost staring into space. I then let her lie on the floor and after a few minutes carry her to her bed or the couch depending on her location. She is then fine in less than an hour or sometimes within a few minutes. Other than these episodes ( a couple of them per day at least), she is fine and can walk for 25 to 30 minutes during her daily routine etc.
She is on Levodopa ( totally 5 tablets a day - 1, 1, 1.5,1.5 ; and I give her NAC - 1000 mg daily and also she is on 1 tablet a day of 100 mg zofloft ( in addition to a few supplements).
Thanks in advance for all your suggestions / input.