Skip to main content
ImmuneCited

Vitamin D para Upper Respiratory Tract Infections

A

Lancet 2025 meta-analysis shows vitamin D supplementation may help protect against acute respiratory infections, with strongest effects in individuals with baseline 25(OH)D levels below 25 nmol/L. Optimal protective dosing appears to be 400-1,200 IU/day rather than intermittent bolus dosing.

<\/script>\n
`; }, get iframeSnippet() { const domain = 'immunecited.com'; const params = 'ingredient\u003Dvitamin\u002Dd\u0026condition\u003Dupper\u002Drespiratory\u002Dinfections'; return ``; }, get activeSnippet() { return this.method === 'script' ? this.scriptSnippet : this.iframeSnippet; }, copySnippet() { navigator.clipboard.writeText(this.activeSnippet).then(() => { this.copied = true; setTimeout(() => { this.copied = false; }, 2000); }); } }" @keydown.escape.window="open = false" @click.outside="open = false">

Embed This Widget

Style



      
      
    

Widget powered by . Free, no account required.

A

Conclusión

Lancet 2025 meta-analysis shows vitamin D supplementation may help protect against acute respiratory infections, with strongest effects in individuals with baseline 25(OH)D levels below 25 nmol/L. Optimal protective dosing appears to be 400-1,200 IU/day rather than intermittent bolus dosing.

Key Study Findings

Review
UCI Sports Nutrition Project: The Role of Nutrition in the Prevention and Management of Illnesses …
Dose: None vs: None Outcome: None Efecto: None None

Población: Elite/professional cyclists nutrition review

Systematic Review
Interventions for preventing the progression of autosomal dominant polycystic kidney disease.
Dose: Disease-modifying agents (tolvaptan, etc.) vs: Placebo or standard care Outcome: Kidney disease progression Efecto: None None

Población: Patients with ADPKD

Review
Nutraceuticals and pharmacological to balance the transitional microbiome to extend immunity during COVID-19 and other …
Dose: Probiotics, nutraceuticals vs: None Outcome: Immune response modulation in COVID-19 Efecto: None None

Población: COVID-19 patients with gut dysbiosis

Review
Revisiting Vitamin D Guidelines: A Critical Appraisal of the Literature.
Dose: 600-800 IU (DRI) or higher vs: None Outcome: Skeletal and extra-skeletal health benefits Efecto: None None

Población: General population (guideline comparison)

Meta-Analysis n=5748
High-dose oral vitamin D supplementation for prevention of infections in children aged 0 to 59 …
Dose: 400 IU vs: Placebo Outcome: None Efecto: None None

Población: Healthy adults

Case-Control 26.0 weeks
Vitamin D - An Elixir for Recurrent Upper Respiratory Tract Infection.
Dose: 98% vs: control Outcome: None Efecto: None None

Población: None

Key Statistics

40

Estudios

30000

Participantes

Positive

A

Calificación

Referenced Papers

Dermatologic therapy 2022 42 citas
International journal of … 2018 165 citas
European journal of … 2016 93 citas
Indian journal of … 2013 24 citas
Acta scientiarum polonorum. … 2012 11 citas
International journal of … 2011 49 citas
Diseases of the … 2001 7 citas

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Dosificaciones de uso común

general:
600-800 IU/day
immunesupport:
1,000-2,000 IU/day
deficiencycorrection:
4,000-5,000 IU/day (under medical supervision)

Límite superior: 4,000 IU/day (100 mcg)

Dosificaciones estudiadas en la investigación

Dosificación Duración Efecto N
None -- Mixed --
Disease-modifying agents (tolvaptan, etc.) -- Positive --
Probiotics, nutraceuticals -- Positive --
600-800 IU (DRI) or higher -- Positive --
400 IU -- Negative 5748
98% 26.0 weeks Mixed --
None -- Positive --
None -- Positive 50554

Mejor momento para tomar: With a meal containing fat for better absorption

Safety & Side Effects

Efectos secundarios reportados

  • Hypercalcemia at very high doses (nausea, vomiting, weakness)
  • Kidney stones with excessive long-term use
  • Constipation
  • Metallic taste

Interacciones conocidas

  • Thiazide diuretics (may increase risk of hypercalcemia)
  • Corticosteroids (reduce vitamin D absorption and metabolism)
  • Orlistat and cholestyramine (reduce fat-soluble vitamin absorption)
  • Statins (vitamin D may affect statin metabolism)

Ingesta máxima tolerable: 4,000 IU/day (100 mcg)

Consulte siempre a su profesional de salud antes de comenzar cualquier suplemento.Siempre consulte a su profesional de salud antes de comenzar cualquier suplemento.

Frequently Asked Questions

Does Vitamin D help with Upper Respiratory Tract Infections?
Based on 40 studies with 30,000 participants, there is strong evidence from multiple clinical trials that Vitamin D may support Upper Respiratory Tract Infections management. Our evidence grade is A (Strong Evidence).
How much Vitamin D should I take for Upper Respiratory Tract Infections?
Studies have used various dosages. A commonly studied range is 600-800 IU/day. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of Vitamin D?
Reported side effects may include Hypercalcemia at very high doses (nausea, vomiting, weakness), Kidney stones with excessive long-term use, Constipation, Metallic taste. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for Vitamin D and Upper Respiratory Tract Infections?
We rate the evidence as Grade A (Strong Evidence). This rating is based on 40 peer-reviewed studies with 30,000 total participants. The overall direction of effect is positive.

Related Evidence

Aviso legal FDA: Estas declaraciones no han sido evaluadas por la Food and Drug Administration. Los productos y la información en este sitio web no están destinados a diagnosticar, tratar, curar ni prevenir ninguna enfermedad. Las calificaciones de evidencia presentadas se basan en nuestro análisis de investigación publicada revisada por pares y no constituyen consejo médico. Siempre consulte a su profesional de salud antes de comenzar cualquier régimen de suplementos.