Vegan Supplement Boosts Omega-3 and Vitamin D Levels in 4 Months
This clinical trial followed 72 healthy vegan adults who took either a placebo or a multinutrient supplement combining vitamins/minerals with omega-3 (EPA and DHA) for four months. The supplement was tested at a standard dose and a double dose.
Without supplementation, the placebo group actually saw their omega-3 index and vitamin D blood levels decline over the four months—a common pattern in vegan diets, which typically lack these nutrients. In contrast, both supplement groups showed significant increases in both markers.
Interestingly, doubling the dose produced slightly bigger improvements in omega-3 index and vitamin D status, but the difference between the standard and double dose wasn’t statistically meaningful. Vitamin E levels stayed the same in all groups, which was expected since it was included only to protect the omega-3 oils from oxidation, not as a nutrient target.
What this means for you
For vegans, this study suggests that a combined omega-3 and vitamin D supplement can meaningfully raise these often-low nutrient levels within a few months, and that a standard dose appears sufficient without needing to double up. The study measured nutrient blood levels only, not specific health outcomes.
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Prostaglandins, leukotrienes, and essential fatty acids · 2026-07-12 · DOI: 10.1016/j.plefa.2026.102759
Read the original source ↗This summary is for educational purposes only and is not medical advice. Always talk to your healthcare provider before making changes to your supplement routine.