Vitamina D per Telogen effluvium

Q: Does Vitamina D help with Telogen effluvium?

Based on 34 studies with 17,842 participants, there is insufficient evidence at this time that Vitamina D may support Telogen effluvium management. Our evidence grade is F (Evidence Against).

Q: How much Vitamina D should I take for Telogen effluvium?

Studies have used various dosages. A commonly studied range is 600-800 IU/day. Always consult your healthcare provider before starting any supplement regimen.

Q: Are there side effects of Vitamina 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.

Q: How strong is the evidence for Vitamina D and Telogen effluvium?

We rate the evidence as Grade F (Evidence Against). This rating is based on 34 peer-reviewed studies with 17,842 total participants. The overall direction of effect is mixed.

Basato su 32 studi (1 meta-analysis, 1 RCT) con 17,842 partecipanti totali. I risultati sono contrastanti tra gli studi.

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In sintesi

Despite frequent associations between low vitamin D and telogen effluvium, research does not clearly support vitamin D supplementation as an effective approach for this type of hair shedding.

Lower vitamin D levels are common in telogen effluvium patients but may not be the cause
No well-designed RCTs demonstrate that supplementation resolves telogen effluvium
Post-COVID hair loss studies show inconsistent findings regarding vitamin D
Correcting a deficiency is reasonable, but vitamin D alone is unlikely to resolve hair shedding

Key Study Findings

retrospective observational n=113

Telogen Effluvium Following Coronavirus Disease-2019 Infection: A Retrospective Study of 113 Cases.

Dose: None vs: Placebo Effetto: None None

narrative review

Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions.

Dose: None vs: Placebo Effetto: None None

Review

Safety First: A Comprehensive Review of Nutritional Supplements for Hair Loss in Breast Cancer Patients.

Dose: None vs: Placebo Effetto: None None

Meta-analysis

Vitamin D deficiency in non-scarring and scarring alopecias: a systematic review and meta-analysis.

Dose: None vs: Placebo Effetto: OR=2.84 (AA vs controls), OR=5.24 (FPHL vs controls) p<0.01

case-control study n=180

A comprehensive investigation of biochemical status in patients with telogen effluvium: Analysis of Hb, ferritin, …

Dose: not applicable vs: Placebo Effetto: None None

meta_analysis n=10670

Serum 25 hydroxyvitamin D in non-scarring alopecia: A systematic review and meta-analysis.

Dose: not applicable (observational meta-analysis) vs: Placebo Effetto: WMD -7.29 ng/mL (95% CI -9.21, -5.38); OR for vitamin D deficiency 3.11 (95% CI 2.29, 4.22) not explicitly stated; CI does

Key Statistics

Studi

17842

Partecipanti

↔

Mixed

Grado

Referenced Papers

Safety First: A Comprehensive Review of Nutritional Supplements for Hair Loss in Breast Cancer Patients. Review

Nutrients 2025 2 citazioni

Telogen Effluvium Following Coronavirus Disease-2019 Infection: A Retrospective Study of 113 Cases. Other

International journal of … 2025

Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions. Review

Journal of drugs … 2025

A comprehensive investigation of biochemical status in patients with telogen effluvium: Analysis of Hb, ferritin, vitamin B12, vitamin D, thyroid … Other

Journal of cosmetic … 2024 7 citazioni

Serum 25 hydroxyvitamin D in non-scarring alopecia: A systematic review and meta-analysis. Meta-Analysis

Journal of cosmetic … 2024 7 citazioni

Post Covid telogen effluvium: the diagnostic value of serum ferritin biomarker and the preventive value of dietary supplements. a case … Other

Archives of dermatological … 2024 5 citazioni

Vitamin D deficiency in non-scarring and scarring alopecias: a systematic review and meta-analysis. Systematic Review

Frontiers in nutrition 2024 4 citazioni

Filling the Gaps: Vitamin D Status in Diffuse Hair Fall Among Pakistanis. Other

Dermatology practical & … 2024

Etiology, management, and outcomes of pediatric telogen effluvium: A single-center study in the United States. Other

Pediatric dermatology 2023 9 citazioni

Micronutrient Deficiencies and Digital Computerized Phototrichogram Analysis in Telogen Effluvium: a Retrospective Correlation Study in a Tertiary Medical Center. Other

Dermatology practical & … 2023 4 citazioni

The development of non-scarring alopecia in women who wear the hijab. Other

Archives of dermatological … 2023 3 citazioni

Oral Vitamin D Treatment in Patients with Telogen Effluvium: Clinical and Dermoscopic Evaluation. Other

International journal of … 2023 1 citazioni

Telogen effluvium in daily practice: Patient characteristics, laboratory parameters, and treatment modalities of 3028 patients with telogen effluvium. Other

Journal of cosmetic … 2022 22 citazioni

The role of micronutrients in the management of COIVD-19 and optimizing vaccine efficacy. Review

Human nutrition & … 2022 9 citazioni

Nonscarring scalp alopecia: Which laboratory analysis should we perform on whom? Other

Turkish journal of … 2022 8 citazioni

Reply to "Vitamin D status in scarring and nonscarring alopecia". Other

Journal of the … 2022 6 citazioni

Evaluation of MCV/RDW Ratio and Correlations With Ferritin in Telogen Effluvium Patients. Other

Dermatology practical & … 2022 6 citazioni

Supplementation and hair growth: A retrospective chart review of patients with alopecia and laboratory abnormalities. Other

JAAD international 2022 6 citazioni

Telogen Effluvium - a review of the science and current obstacles. Review

Journal of dermatological … 2021 51 citazioni

Role of vitamin D in hair loss: A short review. Review

Journal of cosmetic … 2021 44 citazioni

Characteristics of telogen effluvium in COVID-19 in western Iran (2020). Other

Anais brasileiros de … 2021 26 citazioni

Prevalence of Low Serum Vitamin D Levels in Patients Presenting With Androgenetic Alopecia: A Review. Review

Cureus 2021 20 citazioni

Efficacy of Oral Vitamin D3 Therapy in Patients Suffering from Diffuse Hair Loss (Telogen Effluvium). Other

Journal of nutritional … 2021 12 citazioni

Telogen effluvium caused by COVID-19 in Elmhurst, New York: report of a cohort and review. Review

Dermatology online journal 2021 3 citazioni

Study of serum vitamin D levels in men with premature androgenetic alopecia. Other

International journal of … 2020 18 citazioni

Topical L-thyroxine: The Cinderella among hormones waiting to dance on the floor of dermatological therapy? Review

Experimental dermatology 2020 10 citazioni

NonScarring Diffuse Hair Loss in Women: a Clinico-Etiological Study from tertiary care center in North-West India. Observational

Journal of cosmetic … 2019 25 citazioni

Vitamin D Receptor Gene Polymorphism In Chronic Telogen Effluvium; A Case-Control Study. Other

Clinical, cosmetic and … 2019 7 citazioni

The Role of Vitamin D in Non-Scarring Alopecia. Review

International journal of … 2017 61 citazioni

Vitamin and Mineral Deficiencies in Patients With Telogen Effluvium: A Retrospective Cross-Sectional Study. Other

Journal of drugs … 2016 56 citazioni

Female Pattern Hair Loss: A Retrospective Study in a Tertiary Referral Center. Other

International journal of … 2016 28 citazioni

Use of Vitamins and Minerals in the Treatment of Hair Loss: A Cross-Sectional Survey among Dermatologists in Saudi Arabia. Other

Journal of cutaneous … 2014 10 citazioni

Serum ferritin and vitamin d in female hair loss: do they play a role? Other

Skin pharmacology and … 2013 127 citazioni

'Atrophic telogen effluvium' from cytotoxic drugs and a randomized controlled trial to investigate the possible protective effect of pretreatment with … RCT

The British journal … 2005 40 citazioni

Dosage & Usage

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

Dosaggi di uso comune

general:: 600-800 IU/day
deficiency:: 1,000-5,000 IU/day

Limite massimo: 4,000 IU/day

Dosaggi studiati nella ricerca

Dosaggio	Durata	Effetto	N
None	--	Neutral	113
None	--	Positive	--
None	--	Mixed	--
None	--	Negative	--
not applicable	--	Mixed	180
not applicable (observational meta-analysis)	--	Negative	10670
None	--	Mixed	100
None	--	Neutral	120

Momento migliore per l'assunzione: With a fat-containing meal for optimal absorption

Safety & Side Effects

Effetti collaterali segnalati

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

Interazioni note

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

Livello di assunzione massimo tollerabile: 4,000 IU/day

Consultare sempre il proprio medico prima di iniziare qualsiasi integratore.Consultate sempre il vostro medico prima di iniziare qualsiasi integratore.

Frequently Asked Questions

Does Vitamina D help with Telogen effluvium?

Based on 34 studies with 17,842 participants, there is insufficient evidence at this time that Vitamina D may support Telogen effluvium management. Our evidence grade is F (Evidence Against).

How much Vitamina D should I take for Telogen effluvium?

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 Vitamina 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 Vitamina D and Telogen effluvium?

We rate the evidence as Grade F (Evidence Against). This rating is based on 34 peer-reviewed studies with 17,842 total participants. The overall direction of effect is mixed.

Related Evidence

Altri ingredienti per Telogen effluvium

Minoxidil A Olio di semi neri A Viviscal A Ferro B Acidi grassi Omega-3 B Cheratina B

Vitamina D per altre condizioni

Alopecia areata A Alopecia femminile A

Verdetto rapido

Basato su 32 studi (1 meta-analysis, 1 RCT) con 17,842 partecipanti totali. I risultati sono contrastanti tra gli studi.

Evidence Strength10%

Low confidence

Analisi degli studi

RCT (1)Meta (1)Other (32)

Confronta le alternative

Scoprite come si confrontano altri ingredienti per questa condizione.

Visualizza tutti gli ingredienti per Telogen effluvium

Approfondimenti

Avvertenza FDA: Queste affermazioni non sono state valutate dalla Food and Drug Administration. I prodotti e le informazioni presenti su questo sito web non sono destinati a diagnosticare, trattare, curare o prevenire alcuna malattia. I gradi di evidenza presentati si basano sulla nostra analisi della ricerca pubblicata e sottoposta a revisione paritaria e non costituiscono consulenza medica. Consultate sempre il vostro medico prima di iniziare qualsiasi regime di integrazione.