How it's calculated
Price per 100 мкг — the cost of 100 мкг of the substance in a single product, calculated based on the ingredients listed on the label. The “Form” column indicates how well the substance’s form is absorbed. In the “By Price (Adjusted for Form)” sort, the price is divided by a form coefficient (ranging from 0.5 to 1): the poorer the form, the higher the final cost; “Best Forms” lists only the optimal forms. The table includes products with a listed price; discontinued products are excluded.
Vitamin D (data on 13 October 2026)
| № | Product | Price | For 100 мкг | Form |
|---|---|---|---|---|
| 1 | Futurebiotics, Vitamin D3, 250 mcg (10,000 IU), 360 Tablets | $10.29 | $0.011 | Optimal FormD3 |
| 2 | Vitacost, Vitamin D3, 250 mcg (10,000 IU), 365 Capsules | $15.06 | $0.017 | Optimal FormD3 |
| 3 | Futurebiotics, Vitamin D3, 250 mcg (10,000 IU), 120 Tablets | $5.14 | $0.017 | Optimal FormD3 |
| 4 | Healthy Origins, Vitamin D3, 250 mcg (10,000 IU), 360 Softgels | $18.99 | $0.021 | Optimal FormD3 (from lanolin) |
| 5 | Vitamatic, Vitamin D3, 125 mcg (5,000 IU), 500 Softgels | $13.99 | $0.022 | Optimal FormD3 |
| 6 | Bluebonnet Nutrition, Liquid Vitamin D3 Drops, Citrus, 125 mcg (5,000 IU), 1 fl oz (30 ml) | $25.56 | $0.023 | Optimal FormD3 (from lanolin) |
| 7 | Viva Naturals, Vitamin D3 with Organic Liquid Coconut Oil, 125 mcg (5,000 IU), 360 Softgels | $10.99 | $0.024 | Optimal FormD3 |
| 8 | NOW Foods, Vitamin D-3, High Potency, 240 Softgels (250 mcg per Softgel) | $14.84 | $0.025 | Optimal FormD3 (from lanolin) |
| 9 | Doctor's Best, Vitamin D3, 125 mcg (5,000 IU), 720 Softgels | $22.65 | $0.025 | Optimal FormD3 |
| 10 | Micro Ingredients, Vitamin D3 , 5,000 IU, 500 Softgels | $16.99 | $0.027 | Optimal FormD3 |
Vitamin D3 + K2 (data on 13 October 2026)
| № | Product | Price | For 100 мкг | Form |
|---|---|---|---|---|
| 1 | Micro Ingredients, Vitamin D3 & K2, 300 Softgels | $34.95 | $0.047 | Complex with Optimal Forms
|
| 2 | Vitamatic, Vitamin K2 + D3, 120 Tablets | $15.74 | $0.052 | Complex with Optimal Forms
|
| 3 | Micro Ingredients, Vitamin D3 & K2, 180 Softgels | $24.95 | $0.055 | Complex with Optimal Forms
|
| 4 | Metabolic Nutrition, Vitamin D3 + K2, 180 Capsules | $19.99 | $0.063 | Complex with Optimal Forms
|
| 5 | 21st Century, D3 + K2, 120 Capsules | $9.99 | $0.067 | Complex with Optimal Forms
|
| 6 | Metabolic Nutrition, Vitamin D3 + K2, 90 Capsules | $10.99 | $0.070 | Complex with Optimal Forms
|
| 7 | California Gold Nutrition, Vitamin D3 + K2 as MK-7, 180 Veggie Capsules | $16.20 | $0.072 | Complex with Optimal Forms
|
| 8 | Micro Ingredients, Vitamin D3 + K2, 300 Softgels | $29.99 | $0.080 | Complex with Optimal Forms
|
| 9 | Doctor's Best, Vitamin D3 + K2 MK-7, 180 Softgels | $18.99 | $0.084 | Complex with Optimal Forms
|
| 10 | Micro Ingredients, Vitamin D3 & K2, 90 Softgels | $18.99 | $0.084 | Complex with Optimal Forms
|
Children's (data on 13 October 2026)
Prices are in U.S. dollars; shipping to U.S.. Items that are not available in the country, as well as items that are out of stock or for which no restock date is available, are not included in the table.