can Folic Acid cause anxiety/anemia-like symptoms?

[snitbit]

The other day I learned that I’m heterozygous for MTHFR A1298C and MTHFR C677T. What I want to know is whether synthetic Folic Acid can trigger symptoms in people like me? I understand that maybe I can’t methylate it, but could that possibly trigger symptoms similar to anxiety or anemia?

Last year, I had decided to switch to a multivitamin. After about a month, I began to exhibit classic anemia or anxiety symptoms. so I stopped taking it. magnesium, vitamin c, and methylcobalamin eased the symptoms, but not totally. then I tried adding a low dose a b-complex that had folic acid. even though it had been only 3 days, it seemed like my anxiety started ramping up again.

I had been able to tolerate supplements including folic acid when I was younger, but maybe I’ve reached an age that perhaps I just can’t anymore?

for the record, I am now just beginning to go low and slow with methylcobalamin 1000 mcg and L-methylfolate 400 mcg. it's only been three days, but so far I seem to be tolerating it.