There are SEVERAL key nutrients you need to look at if you have MTHFR or POTS. There’s a lot of crossover, but your main ones to see are the B Vitamins, Iron, Lysine, and Folate. Don’t just look at serum blood levels, look at the deficiencies that are IN YOUR CELLS! These are what cause all your symptoms, and what you can EASILY ADDRESS! Reach to my practice and let’s get you tested.