Becky, RMS is just the brand name for some safety rails that go around a toilet, something to grab on to for stability. I’ve looked at reviews for several but not all seem stable for someone with dementia who might not grab both at once, approaching from directly in front of the toilet but rather from one side or the other, transferring from a walker or just another grab bar on a bathroom wall. Someone with a knee or hip problem, not dementia, would be more likely to put weight on both sides at once.
I’m hoping to find someone here who has actually used one that would work without tipping if a person grabbed it more haphazardly. We do have an installed grab bar on one side, on the wall, but there is a vanity on the other side that doesn’t come out far enough to put a grab bar on it. He grabs the wall side with both hands.