I've taken Glantamine for roughly a year or so now and i've never had any problems or side effects. It's been a great tool i've learned to utilize for my LD's and has boosted my LD's from a couple a month to roughly 2 or more per week now. It's commonly used for treating Alzhaimer's like mentioned above and there is a good deal of research done on it, you need to look a little better and you will find more information about it.