Interesting post about the vitamins Plat
The B vitamins, and vitamin C are water soluble vitamins, so one doesn't have to worry about toxicities when taken as directed on the package.
Vitamin A is fat soluble, so if one takes in more than one's body needs, it will accumulate, and eventually can cause toxicities. More than 10,000 units of vitamin A daily on a chronic basis would be a toxic dose.
As a supplement, potassium is only available as a prescription in Canada (probably is the same in the U.S.?) because it can easily lead to toxic reactions if one takes too much.

The B vitamins, and vitamin C are water soluble vitamins, so one doesn't have to worry about toxicities when taken as directed on the package.
Vitamin A is fat soluble, so if one takes in more than one's body needs, it will accumulate, and eventually can cause toxicities. More than 10,000 units of vitamin A daily on a chronic basis would be a toxic dose.
As a supplement, potassium is only available as a prescription in Canada (probably is the same in the U.S.?) because it can easily lead to toxic reactions if one takes too much.

My bad... you're right... you can get it over the counter in small amounts. For higher doses though, you need a prescription.
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