NSTK · 01.2026Independent supplement reference
NutriStack
Edition 1.0Updated August 1, 2026

Supplement × Supplement·Evidence index

Fish Oil Triple Strength and Vitamin D3: what the published research says

PubMed indexes 5 records that name Fish Oil Triple Strength 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.

Read this first

An evidence index, not guidance.

Every statement below is attributed to a named, dated, linked source.

This page lists published research relevant to Fish Oil Triple Strength 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.

The research

5 studies naming Fish Oil Triple Strength and Vitamin D3.

Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.

Factors significantly increasing or inhibiting early stages of malignant melanoma (M.M.) and non-invasive evaluation of new treatment by ingestion and external application of optimal doses of the most effective anti-M.M. substances: haritaki, cilantro, vitamin D3, nori, EPA with DHA, & application of special (+) solar energy stored paper, which reduced the M.M. active area & asbestos rapidly.

Acupuncture & electro-therapeutics research · 2013 · PMID 23724697

Human subjects

Names both Fish Oil Triple Strength and Vitamin D3 in its title.

Effect of Vitamin D and Docosahexaenoic Acid Co-Supplementation on Vitamin D Status, Body Composition, and Metabolic Markers in Obese Children: A Randomized, Double Blind, Controlled Study.

Nutrients · 2022 · PMID 35406010

Multicenter StudyRandomized Controlled Trial108 participants

“Fat mass percentage was significantly reduced, and body mass index improved in both groups, even if all the subjects were still obese at the end of the study. Children receiving both vitamin D and DHA presented a higher increase of DHA levels that could be relevant to prevent inflammatory-associated complications of obesity, but they had no effect on vitamin D levels.”

De Cosmi et al. · From the abstract

Names Fish Oil Triple Strength and Vitamin D3 together in an interaction, co-administration, or pharmacokinetic context.

Effect of Marine Omega-3 Fatty Acid and Vitamin D Supplementation on Incident Atrial Fibrillation: A Randomized Clinical Trial.

JAMA · 2021 · PMID 33724323

Multicenter StudyRandomized Controlled TrialResearch Support, N.I.H., Extramural900 participants

“Among adults aged 50 years or older, treatment with EPA-DHA or vitamin D3, compared with placebo, resulted in no significant difference in the risk of incident AF over a median follow-up of more than 5 years. The findings do not support the use of either agent for the primary prevention of incident AF.”

Albert et al. · Authors' conclusion

Names Fish Oil Triple Strength and Vitamin D3 together in an interaction, co-administration, or pharmacokinetic context.

Effects of a Six-Month Multi-Ingredient Nutrition Supplement Intervention of Omega-3 Polyunsaturated Fatty Acids, vitamin D, Resveratrol, and Whey Protein on Cognitive Function in Older Adults: A Randomised, Double-Blind, Controlled Trial.

The journal of prevention of Alzheimer's disease · 2018 · PMID 29972210

Randomized Controlled Trial

“The present nutrition intervention encompassed a multi-ingredient approach targeted towards improving cognitive function, but overall had only a limited beneficial impact in the older adult sample investigated. Future investigations should seek to establish any potential clinical applications of such targeted interventions with longer durations of supplementation, or in populations with defined cognitive deficits.”

Moran et al. · Authors' conclusion

Names Fish Oil Triple Strength and Vitamin D3 together in an interaction, co-administration, or pharmacokinetic context.

Limitations

What this evidence cannot tell you.

Search-based evidence indexes have real limits, and it is worth being explicit about them:

NutriStack

Track what you actually take.

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 Triple Strength, 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.