What are some of the supplements and vitamins you all give to your parents on a regular basis? More for maintenance purposes?
Probiotics will help with constipation and digestive system. That's important
There is no specific general set of vitamins and supplement, best to go to a doctor and or nutritionist to seek specific recommendation.
But for me -
For Bones: Vit D and Calcium
For Digestive Health: Probiotics
For memory health: Ginkgo extracts
Some others give multi-vit for ease.