Compare vitamin D strength only between products whose labels actually list vitamin D. The calcium-magnesium-zinc combination is one relevant formula to inspect. Read the vitamin D amount for the full labeled serving and compare consistent units, while noting the other nutrients included. A prominent strength number on a biotin or vitamin K product does not establish an equivalent vitamin D amount or a directly comparable formula.View Calcium-Magnesium-Zinc with Vitamin D (300 Tablets).
