[RayChuang88]

Doctors and nutritionists have told us for decades that doses of vitamins above the RDA are unnecessary and even harmful.

That is still true if you're talking fat-soluable vitamins such as A and D--high doses are actually poisonous. But water-soluable vitamins such as the B series, C, and a few others are relatively safe even at 500-700% RDA on a daily basis.

[RVN Airplane Driver]

ping

[wideminded]

Doctors and nutritionists have told us for decades that doses of vitamins above the RDA are unnecessary and even harmful.

That is still true if you're talking fat-soluble vitamins such as A and D--high doses are actually poisonous.

In the case of vitamin D, the Reference Daily Intake is 200 IU. As the article in this thread points out, 20 minutes in the sun will cause the skin to produce 100 times as much.

But water-soluble vitamins such as the B series, C, and a few others are relatively safe even at 500-700% RDA on a daily basis.

I have been taking much higher doses of some these vitamins for many years with no apparent ill effects.