Vitamin D supplements for bone health and immunity
Based on our analysis of 4,418 vitamin d products, Oyster Shell Calcium 250 mg with Vitamin D Tablets 125 IU ranks #1 with a SupplementScore of 46/100. Scores are based on label quality — dosage transparency, formulation cleanliness, and ingredient disclosure.
Every product is scored algorithmically using data from the NIH Dietary Supplement Label Database. The SupplementScore evaluates dosage transparency (35 pts), label completeness (25 pts), formulation cleanliness (25 pts), and ingredient profile (15 pts).
No. The score reflects label quality — how transparent and clean the product label is — not clinical efficacy, bioavailability, or safety. A higher score means better label practices, not guaranteed results.