I found that mag l-threonate helps me fall asleep after an anxious afternoon/night but I'm groggy in the morning. Also, I've read anecdotal reports that after a couple of weeks of regular use, the effect flattens out (sorry, too lazy to search for those reports) and one has to take a break for the effect to return. Have you noticed anything along those lines?

For me, the effect is less (or possibly just less noticable) after a few weeks. But some coffee or tea gets me going pretty quickly and the effects wear off.

I've always been a slow morning person, so 30-60 minutes to start feeling normal is on par for me, so it doesn't really affect my timetable, but you may have a different schedule in mind.

My morning bowel movements when I take magnesium l-threonate are amazing, however, which used to slow me down even more on a typical morning.