Tag: Vitamin b9 toxicity

A 2008 study found that the synthetic form, folic acid, has a tolerable upper intake limit of 1,000 mcg per day due to potential risks. This raises a critical question: can you take too much active folate, also known as L-methylfolate?

While it is extremely rare to get an overdose of naturally occurring folate from food, consuming excessive synthetic folic acid supplements, especially above 1mg daily, poses significant health risks. So, what happens if you have too much folate B9, particularly from supplemental sources, and what are the concerning side effects to be aware of?