Doctors recommended "raising bed", what's the best approach? Several doctors that I had seen over the past month have recommended "raising the head of my bed", and I've resisted for a while but finally coming around to it.

Problem is, there seem to be a bunch of different things, ranging from bed risers that go under the feet of the bed, to things that go under the mattress, to wedge pillows that look extremely uncomfortable. To make things worse, everything I see online seems to be third-party crap.

What have people used successfully? What should I stay away from?