VitaminDB Data · October 2026
The supplement cost-per-dose index
What a single serving of each popular supplement actually costs, computed live from 5,075 tracked products. The cheapest to dose is Vitamin D3 at a median $0.110/serving; among these, Collagen Peptides is the priciest at $0.358.
| Nutrient | Products | Cheap quartile | Median / serving | |
|---|---|---|---|---|
| Vitamin D3 | 364 | $0.057 | $0.110 | best |
| Calcium | 134 | $0.083 | $0.147 | best |
| Vitamin B6 (Pyridoxine) | 122 | $0.076 | $0.147 | best |
| Zinc | 127 | $0.082 | $0.150 | best |
| Vitamin B1 (Thiamine) | 83 | $0.092 | $0.150 | best |
| Vitamin B3 (Niacin) | 134 | $0.093 | $0.151 | best |
| Biotin (Vitamin B7) | 143 | $0.080 | $0.153 | best |
| Folate (Vitamin B9) | 163 | $0.077 | $0.160 | best |
| Vitamin B12 (Cobalamin) | 197 | $0.090 | $0.167 | best |
| B-Complex | 88 | $0.122 | $0.171 | best |
| Vitamin C | 196 | $0.103 | $0.183 | best |
| Vitamin K2 | 90 | $0.083 | $0.183 | best |
| Magnesium | 180 | $0.094 | $0.197 | best |
| Omega-3 EPA/DHA | 91 | $0.103 | $0.222 | best |
| Collagen Peptides | 124 | $0.208 | $0.358 | best |
Sorted cheapest-to-dose first. Live from the curated Amazon US catalog, recomputed hourly.
How we calculated it
Cost per serving = price ÷ servings per container. We report the median (p50) plus the 25th and 75th percentiles per nutrient, across all active products with ≥5 tracked items.
For powders (protein, creatine, collagen) a “serving” is one scoop, which varies in grams — compare those on the per-gram price-spread study instead. This is a value comparison, not dosing advice.
Free to cite
Suggested citation: VitaminDB, “Supplement Cost-Per-Dose Index” (October 2026). https://www.vitamindbc.com/research/cost-per-dose-index · Media: [email protected]