Inversion table, Glucosamine, and whatever else, will only help you keep height you already have.
So for me, I am 5'8 if I deadlift, watch my posture, and stretch. (all of which I would do anyway)
I am closer to 5'7 if I squat heavy, or get lazy with my posture.
I used an inversion table when I had Sciatica from a car wreck. Don't go beyond a 60 degree tilt, and no more than 30-60 seconds at a time, could hurt your back otherwise.