There’s not really any way to say universally what supplements people should take since it depends on the specifics of your diet, lifestyle, age, genetics, etc.

There’s not really any way to say universally what supplements people should take since it depends on the specifics of your diet, lifestyle, age, genetics, etc. Vitamin D is probably the most broadly useful supplement (it’s also the only supplement pediatricians recommend across the board for children). Best way is to just get a basic blood test, that will show your specific levels of the various vitamins and tell you what you need to increase, either through supplements or dietary changes.