I have had heavy severe brain fog for about 5 years from I think sleep apnea. I suddenly improved after taking NAC, phosphitadyl choline with amino acids. but my short term memory and learning still seem disabled, struggling math but still 4.0. I've had a lot of improvement since getting a new ventilator for sleep. I've been trying sam-E, acetyl carnitine, alpha gpc, methyl folate. is there anything I can take to improve learning like magnesium citicoline? http://en.wikipedia.org/wiki/Citicoline#Memory_disorders http://www.magneceutical.com/ thanks very much!