If your elderly friends or family have started taking supplements,it may be useful to figure out exactly what they're taking. A multivitamin plus another supplement might be too much of some vitamins or minerals.
Also, some folks are taking too much of things on purpose and may need an intervention.
In related news, my dads vitamin D results came back and I don't fucking understand how to read or interpret them. They're out of normal range so this means what exactly?