Hi Barbara - I say keep doing what you're doing. I don't believe it can hurt. I will share that my late mother took all manner of supplements, never smoked or drank, ate very healthy, yet she got lung cancer and a horrid neuropathological illness which caused her tremendous pain (I won't go into details to spare myself and everyone else). I often wonder why someone as healthy as her had to experience this.

I take 1000 mg Ester C in the morning and 450 mg Magnesium Citrate at night. Sometimes in the winter I'll take D3 and B12. There are no scientific studies that demonstrate benefits. It is a crap shoot like Jean says. Most of us take them because we know we can't get them all through diet alone.