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Supplement × Prescription·Evidence index

Dexamethasone and Vitamin D3: what the research found

PubMed indexes 8 records that name Dexamethasone and Vitamin D3 together, either in the title or in an interaction, co-administration, or pharmacokinetic context. The key findings come first, in the authors’ own words, followed by every study with its design and PubMed link.

A summary of published research, not medical advice. A pharmacist can check any combination against your full list of medicines and supplements.

Key findings

What the studies concluded.

Reviews and human studies first. Each quote is the authors’ own conclusion about their study, not a NutriStack assessment, and a single study is not a consensus.

“High-dose, iv calcitriol at a dose of 74 microg weekly in combination with dexamethasone was well tolerated but failed to produce a clinical or PSA response in men with CRPC.”

Chadha et al. · 2010 · Human study · details

“In the current study, we show that EB1089, a new vitamin D3 derivative, (1) induces G1 growth arrest of human myeloma cells, which is only partially reversed by interleukin-6 (IL-6); (2) induces apoptosis in synergy with dexamethasone, IL-6, leukemia-inhibitory factor, and Oncostatin M, with an agonistic anti-gp130 monoclonal antibody being unable to prevent this apoptosis; (3) downregulates both the gp80 (ie,…”

The research

8 studies naming Dexamethasone and Vitamin D3.

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

Myeloma cell growth arrest, apoptosis, and interleukin-6 receptor modulation induced by EB1089, a vitamin D3 derivative, alone or in association with dexamethasone.

Blood · 1996 · PMID 8977259

Comparative StudyHuman subjects

“In the current study, we show that EB1089, a new vitamin D3 derivative, (1) induces G1 growth arrest of human myeloma cells, which is only partially reversed by interleukin-6 (IL-6); (2) induces apoptosis in synergy with dexamethasone, IL-6, leukemia-inhibitory factor, and Oncostatin M, with an agonistic anti-gp130 monoclonal antibody being unable to prevent this apoptosis; (3) downregulates both the gp80 (ie, the alpha chain of the IL-6 receptor [IL-6Ralpha]) expression on…”

Puthier et al. · From the abstract

Names both Dexamethasone and Vitamin D3 in its title.

The effect of active vitamin D3 analogs and dexamethasone on the expression of osteocalcin gene in rat tibiae in vivo.

Biochemical and biophysical research communications · 1992 · PMID 1472030

Comparative StudyAnimal study

“Suppressive effect of dexamethasone on osteocalcin expression was persistent for seven days at higher dose. Our results represent the first demonstration of the effect of active vitamin D and corticosteroid on the expression of osteocalcin mRNA in bone in vivo.”

Ikeda et al. · From the abstract

Names both Dexamethasone and Vitamin D3 in its title.

Treatment with dexamethasone and vitamin D3 attenuates neuroinflammatory age-related changes in rat hippocampus.

Synapse (New York, N.Y.) · 2007 · PMID 17621647

Animal study

“In parallel with its ability to decrease microglial activation in vivo, we report that treatment of cultured glia with dexamethasone and vitamin D3 blocked the lipopolysaccharide increased MHCII mRNA and IL-1beta concentration, while the IL-1beta-induced increases in activation of JNK and caspase 3 in cultured neurons were also reversed by treatment with dexamethasone and vitamin D3.”

Moore et al. · From the abstract

Names both Dexamethasone and Vitamin D3 in its title.

Effects of dexamethasone, vitamin A and vitamin D3 on DSP-PP mRNA expression in rat tooth organ culture.

Biochimica et biophysica acta · 2004 · PMID 15358518

Animal study

“Vitamin A likely contributes to dentin mineralization by up-regulating DSP-PP expression. Finally, the up-regulation of DSP-PP expression in tooth germ cultures treated with dexamethasone suggests that its application to patient's dental pulp might promote increased extracellular matrix synthesis and mineralization in the pulp and may explain the narrowing of the dental pulp cavity in patients undergoing long-term dexamethasone administration.”

Ritchie et al. · From the abstract

Names both Dexamethasone and Vitamin D3 in its title.

Limitations

What this evidence cannot tell you.

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

How to read this page

A literature summary, not guidance.

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 Dexamethasone, Vitamin D3, and several hundred other substances.

Log your routine, get reminders at the times you choose, and scan a label to add a product. The checker is a research and organisation tool, not a clinical decision aid.

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.