Ergocalciferol (Vitamin D2)
Ergocalciferol (Vitamin D2) is a tier 2 form of Vitamin D, used in 135 on-market products .
135
on-market products
tier 2
quality tier
n/a
elemental fraction
Why this tier: FDA/label convention treats D2 as bioequivalent to D3, but pooled RCTs found D2 less effective at raising serum 25(OH)D, especially with bolus dosing; the difference was not significant with daily dosing (Tripkovic 2012).
Source: Tripkovic L et al. 2012, PMID 22552031
Trend
Brands using this form
| Brand | Products |
|---|---|
| Vitanica | 12 |
| DEVA | 9 |
| NOW | 7 |
| Bronson Laboratories | 6 |
| The Vitamin Shoppe | 6 |
| Amazon Elements | 4 |
| Naturade | 4 |
| Sequel Vega | 4 |
| Source Naturals | 4 |
| FitLine | 3 |
| Goli Nutrition | 3 |
| Higher Nature | 3 |
| Higher Nature Kids | 3 |
| Hypernaturals | 3 |
| BIOVEA | 2 |
| California Gold Nutrition Ultamins | 2 |
| Futurebiotics | 2 |
| Inner Armour Sports Nutrition | 2 |
| MRM | 2 |
| Premama | 2 |
| Sunrider | 2 |
| AN Amazing Nutrition Amazing Formulas | 1 |
| Abbott | 1 |
| Amazing Herbs | 1 |
| Axis Pharmaceutics Inc. | 1 |