Best magnesium supplements?

Does anyone actually know if there are any real consequences to overdoing it on magnesium citrate supplements? (And please, I'm already well aware of the laxative effect...) Also, does it do anything to your teeth?
Thnx

Here’s the link if you want to dig into the details: Hypermagnesemia.
Believe it or not, things like laxatives or even certain antacids can actually trigger hypermagnesemia!

so, what exactly is hypermagnesemia?

So, basically we're talking about having way too much magnesium in your system—like, high levels in the bloodstream.