New here. Looking for some advice regarding Slow/Fast COMT and low B12 (should I take methylated or not)

Hello,

I learned several years ago I have the MTHFR mutation, I am “heterozygous for the C677T polymorphism in the MTHFR gene”. So I know I only have one mutated copy..

I’ve never had my vitamin levels checked before, so I recently did. I suffer severe OCD, and anxiety, and have physical symptoms too. My iron, ferritin, vitamin D are all optimal but my B12 is rather low (296). My doctor wants me to start a 1000 supplement every other day. My question is, do I get methylated or just regular?

And how do I know if I’m slow COMT or fast? I do have my raw data from 23andme.. is genetic genie reputable? I will note in my early 20s I tried to take SSRIs and had HORRIBLE reactions after a week trial (leads me to believe I am slow COMT and things don’t process quick enough through my system).

I’m just scared of supplement and medicine and don’t want to take anything that will amplify my anxiety!

TIA