Looks similar to Thorne Children’s Basic Nutrients, which I just ordered but did not receive yet (https://smile.amazon.com/gp/product/B000FGZG0S/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1). People’s reviews look positive for it, and it’s significantly cheaper, if the price I saw on the Hardy Nutritionals website is the retail price. Start with the smallest dosage you can, because a too high dose of methylfolate can give its own reactions in susceptible people. I take the Thorne grown-up B vitamin once a week and the methylated compounds do make a difference.
If you want to go down the MTHFR rabbit hole (lots of complexity here), take a look at http://mthfr.net/. If you ever tried to go vegan and failed miserably, or if the child’s behaviour is at its best on animal protein (2 eggs every morning made a difference for mine in school behaviour and focus), chances are MTHFR is involved.