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

Supplement × Supplement·Evidence index

Inositol and Vitamin D3: what the published research says

PubMed indexes 5 records that name Inositol 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 Inositol 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 Inositol and Vitamin D3.

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

The effect of myo-inositol, vitamin D3 and melatonin on the oocyte quality and pregnancy in in vitro fertilization: a randomized prospective controlled trial.

European review for medical and pharmacological sciences · 2020 · PMID 32894558

Randomized Controlled Trial

“The supplementation of MI in combination with melatonin in the first 3 months before oocyte pick up and with vitamin D3 in the further 3 months could represent an innovative support for all those women undergoing ICSI.”

Wdowiak et al. · Authors' conclusion

Names both Inositol and Vitamin D3 in its title.

Oscillations in inositol 1,4,5-trisphosphate and diacyglycerol induced by vitamin D3 metabolites in confluent mouse osteoblasts.

Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 1993 · PMID 8237475

Comparative StudyAnimal study

“Thus, the action of these secosteroids on the osteoblast membrane may also implicate several steps of the phosphatidylcholine cycle, according to the metabolite tested. Finally, these data point to a direct interaction of vitamin D metabolites with specific membrane recognition moieties.”

Grosse et al. · From the abstract

Names both Inositol and Vitamin D3 in its title.

Advances in the management of osteopenia: a case series.

Journal of medical case reports · 2026 · PMID 41709348

Case ReportsHuman subjects

“Despite the preliminary nature of the obtained data, combined supplementation exerted positive effects on bone metabolism by influencing serum levels of both vitamin D and osteocalcin, thus suggesting enhanced bone formation. Biochemical improvements support the potential of D-chiro-inositol and α-lactalbumin, in addition to traditional supplements, as a therapeutic strategy for managing osteopenia, even though further clinical studies are needed to clarify the effects and…”

Nordio et al. · Authors' conclusion

Names Inositol and Vitamin D3 together in an interaction, co-administration, or pharmacokinetic context.

Resveratrol based oral nutritional supplement produces long-term beneficial effects on structure and visual function in human patients.

Nutrients · 2014 · PMID 25329968

Case ReportsHuman subjects

“These three cases demonstrate that application of epigenetics has long-term efficacy against AMD retinal disease, when the retinal specialist has exhausted other therapeutic modalities.”

Richer et al. · Authors' conclusion

Names Inositol 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 Inositol, 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.