Eight key nutrients fall into the category of those that are hard to obtain: B12, D3, K2, DHA/EPA, iodine, zinc, selenium, and magnesium.
Amino Acids
Antioxidants
EFAs – Essential Fatty Acids
Minerals
Peptides
Phytonutrients
Vitamins
A
B9
Methylfolate
B12
Cobalamin
Methylcobalamin