D-Alpha-Tocopheryl Succinate (natural, esterified) vs. Mixed Tocopherols
Among 4,796 on-market vitamin e products with an identifiable primary form, 56.8% use D-Alpha-Tocopheryl Succinate (natural, esterified) (2,726 products) and 7.1% use Mixed Tocopherols (341).
| D-Alpha-Tocopheryl Succinate (natural, esterified) | Mixed Tocopherols | |
|---|---|---|
| Quality tier | Tier 1 | Unrated |
| Vitamin E by weight | — | — |
| Share of market | 56.8% | 7.1% |
| On-market products | 2,726 | 341 |
| Median declared dose | 34 mg middle half: 20–90 | 40 mg middle half: 11.5–118.42 |
| Most common brands | DC, Douglas Laboratories, Source Naturals | Perque, Futurebiotics, Allergy Research Group |
Doses are declared per serving in mg. “By weight” is the share of the ingredient that is the nutrient itself (e.g. elemental magnesium in a magnesium salt).
Why D-Alpha-Tocopheryl Succinate (natural, esterified) is tier 1
Same rationale as the acetate ester -- esterification does not meaningfully change post-hydrolysis bioavailability; natural-form advantage over synthetic still applies.
Source: Burton GW et al. 1998, PMID 9537614
Why Mixed Tocopherols is unrated
A mixed alpha/beta/gamma/delta blend has different overall biological activity than isolated alpha-tocopherol (RDA/label math counts only the alpha fraction), but no comparative-potency study for this specific commercial blend was verified.
Source: uncertain -- needs review