Supplement × Supplement·Evidence index
PubMed indexes 8 records that name Fish Oil and Vitamin D3 together, either in the title or in an interaction, co-administration, or pharmacokinetic context. Each one is listed below with its study design and, where the abstract states one, the authors’ own conclusion, quoted and linked. This page reports that literature. It does not tell you whether to combine them.
Every statement below is attributed to a named, dated, linked source.
This page lists published research relevant to Fish Oil and Vitamin D3. It deliberately does not state whether the combination is safe, whether it interacts, in which direction, at what dose, or how far apart to take them.
Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.
“In this 3-year prevention trial among largely vitamin D replete adults age 70 and older, SHEP alone or in combination with omega-3s reduced serum sclerostin levels, while vitamin D3 and omega-3s alone did not affect serum sclerostin levels.”
Names both Fish Oil and Vitamin D3 in its title.
“Among generally healthy, active, and largely vitamin D3 replete adults aged 70 years and older, vitamin D3, omega-3s and SHEP, individually and in combination had no benefits on self-reported PA and objectively measured physical function. The detrimental effect of vitamin D supplementation on PA change needs further examination.”
Names both Fish Oil and Vitamin D3 in its title.
“Neither supplemental vitamin D3 nor marine omega-3 fatty acids for 2 years improved physical performance in this generally healthy adult population.”
Names both Fish Oil and Vitamin D3 in its title.
“Furthermore, the current study identified a vitamin D response element in the cyp19a1a promoter and demonstrated that 1.25(OH)2D3-vitamin D response directly activated cyp19a1a production through activating the vitamin D response element. In conclusion, this study shows that an appropriate concentration of vitamin D3 can promote zebrafish ovarian development and affect vitellogenin synthesis through the vdr/cyp19a1a/er/vtg gene axis.”
Names both Fish Oil and Vitamin D3 in its title.
“The use of omega-3 PUFA together with vitamin D3 might have beneficial influences on fracture union. In the future, the combination of omega-3 PUFA and vitamin D3 might be used as an encouraging treatment choice that contributes to fracture healing.”
Names both Fish Oil and Vitamin D3 in its title.
“Studies of individual components for improving pregnancy outcomes and several uncontrolled preconception to infancy medical practices suggest that multiple interventions might improve the outcomes of pregnancies where there is risk for developing ASD.”
Names Fish Oil and Vitamin D3 together in an interaction, co-administration, or pharmacokinetic context.
“In contrast, participants receiving daily vitamin D supplements experienced a benefit at the hip. However, it should be noted that the effect across 3 years was very small.”
Names Fish Oil and Vitamin D3 together in an interaction, co-administration, or pharmacokinetic context.
“In older adults not selected for vitamin D deficiency, supplemental vitamin D did not lower URI risk overall. Whether effects differ in subgroups requires further study. Clinical Trials Registration. NCT01169259.”
Names Fish Oil and Vitamin D3 together in an interaction, co-administration, or pharmacokinetic context.
Search-based evidence indexes have real limits, and it is worth being explicit about them:
NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers Fish Oil, Vitamin D3, and several hundred other substances.
The checker is a research and organisation tool, not a clinical decision aid, and its per-pair assessments are excluded from search until they pass claim-level review.
NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.
