So for example this b12 methylcobalamin 5000mcg and this b12 l-methyl folate 15mg+1000mcg methylcobalamin should cover what you’re saying I should take?

Do you recommend a specific brand that is the two in one dosage you recommend, or should I be searching for two separate pills? With there being what feels like 100s of brands/products out there I want to get something good.