Vitamin C
Notes from DrKF:
I tend to use l-ascorbic acid because there’s not a lot of data that the much more expensive forms are that much more effective. That said, if taking vitamin C tends to upset your stomach, look for a buffered form, and if you want a few extra methylation adaptogens, many vitamin C products come with extra flavonoids.Â
Dosage: 500–1000 mg a day as a baseline, more if you need extra antioxidant or immune support.