People use all kinds of supplements that are not FDA approved

[wnylib]

29. Supplements are ok IF you know

what you are doing and what is in them. I don't remember which group did the study, but they found that several supplements did not have even a trace of what they claimed to provide.

About 10 years ago, I had a severe vitamin D deficiency that led to TIAs (mini strokes). A neurologist put me on a megadose of prescription vitamin D until it got back to normal levels. Subsequent monitoring showed that my levels dropped again if I did not take a daily maintenance dose of 2000 units. That's units, not milligrams.

Vitamin D is fat soluble so I take it with meals that have some fat content, preferably the "good fat" that comes with fish, pecans, walnuts, etc.

Vitamin D, fats, calcium, and vitamin A work together so I make sure that I get the rest in my foods. It's easy to look up the vitamin and mineral content of foods.

Some supplements are harmful, like calcium. Taken in supplements, it forms deposits in arteries instead of being absorbed. This is why most vitamin D producers stopped mixing them in one pill. Food sources of calcium are far superior, safer, and plentiful in plants and dairy.

So careful research from credible sources is necessary if taking supplenents, and food sources are preferable.