Has anyone tried magnesium L-threonate…

…either for themselves or for a loved one with dementia? After reading a lot of good things about them, I started using magnesium taurate and magnesium glycinate to help with stress and sleep, and it seems to help. But then I read that magnesium L-threonate is beneficial for brain health and helps with focus, etc. I just ordered a reliable brand and plan to take it myself, but I wonder about giving it to my husband with vascular dementia.