Vitamina D para Telogen Effluvium
F Efeito A pesquisa indica que é pouco provável que seja eficaz para esta utilização.Baseado em 32 estudos (1 meta-analysis, 1 RCT) com 17,842 participantes no total. Os resultados são variados entre os estudos.
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F
Conclusão
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
Efeito: None
None
narrative review
Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions.
Dose: None
vs: Placebo
Efeito: None
None
Review
Safety First: A Comprehensive Review of Nutritional Supplements for Hair Loss in Breast Cancer Patients.
Dose: None
vs: Placebo
Efeito: None
None
Meta-analysis
Vitamin D deficiency in non-scarring and scarring alopecias: a systematic review and meta-analysis.
Dose: None
vs: Placebo
Efeito: 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
Efeito: 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
Efeito: 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
34
Estudos
17842
Participantes
↔
Mixed
F
Nota
Referenced Papers
Nutrients
2025
2 citações
Telogen Effluvium Following Coronavirus Disease-2019 Infection: A Retrospective Study of 113 Cases.
Other
International journal of …
2025
Journal of drugs …
2025
Journal of cosmetic …
2024
7 citações
Serum 25 hydroxyvitamin D in non-scarring alopecia: A systematic review and meta-analysis.
Meta-Analysis
Journal of cosmetic …
2024
7 citações
Archives of dermatological …
2024
5 citações
Vitamin D deficiency in non-scarring and scarring alopecias: a systematic review and meta-analysis.
Systematic Review
Frontiers in nutrition
2024
4 citações
Dermatology practical & …
2024
Pediatric dermatology
2023
9 citações
Dermatology practical & …
2023
4 citações
Archives of dermatological …
2023
3 citações
Oral Vitamin D Treatment in Patients with Telogen Effluvium: Clinical and Dermoscopic Evaluation.
Other
International journal of …
2023
1 citações
Journal of cosmetic …
2022
22 citações
Human nutrition & …
2022
9 citações
Turkish journal of …
2022
8 citações
Journal of the …
2022
6 citações
Dermatology practical & …
2022
6 citações
JAAD international
2022
6 citações
Journal of dermatological …
2021
51 citações
Journal of cosmetic …
2021
44 citações
Anais brasileiros de …
2021
26 citações
Cureus
2021
20 citações
Journal of nutritional …
2021
12 citações
Dermatology online journal
2021
3 citações
International journal of …
2020
18 citações
Experimental dermatology
2020
10 citações
NonScarring Diffuse Hair Loss in Women: a Clinico-Etiological Study from tertiary care center in North-West India.
Observational
Journal of cosmetic …
2019
25 citações
Clinical, cosmetic and …
2019
7 citações
International journal of …
2017
61 citações
Journal of drugs …
2016
56 citações
International journal of …
2016
28 citações
Journal of cutaneous …
2014
10 citações
Skin pharmacology and …
2013
127 citações
The British journal …
2005
40 citações
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
Dosagens Comumente Utilizadas
- general:
- 600-800 IU/day
- deficiency:
- 1,000-5,000 IU/day
Limite superior: 4,000 IU/day
Dosagens Estudadas em Pesquisas
| Dosagem | Duração | Efeito | 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 |
Melhor horário: With a fat-containing meal for optimal absorption
Safety & Side Effects
Efeitos Colaterais Relatados
- ⚠ Hypercalcemia at very high doses (nausea, vomiting, weakness)
- ⚠ Kidney stones with excessive long-term use
- ⚠ Constipation
- ⚠ Metallic taste
Interações Conhecidas
- ● Thiazide diuretics (may increase risk of hypercalcemia)
- ● Corticosteroids (reduce vitamin D absorption and metabolism)
- ● Orlistat and cholestyramine (reduce fat-soluble vitamin absorption)
Ingestão máxima tolerável: 4,000 IU/day
Consulte sempre o seu profissional de saúde antes de iniciar qualquer suplemento.Sempre consulte seu profissional de saúde antes de iniciar qualquer suplemento.
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
Outros ingredientes para Telogen Effluvium
Vitamina D para outras condições
References
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- [2] Namrata Chhabra et al.. Int J Trichology. 2025. Telogen Effluvium Following Coronavirus Disease-2019 Infection: A Retrospective Study of 113 Cases. doi:10.4103/ijt.ijt_38_22 PubMed
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- [5] Yuling Chen et al.. J Cosmet Dermatol. 2024. Serum 25 hydroxyvitamin D in non-scarring alopecia: A systematic review and meta-analysis. doi:10.1111/jocd.16093 PubMed
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Aviso Legal da FDA: Estas declarações não foram avaliadas pela Food and Drug Administration. Os produtos e informações neste site não se destinam a diagnosticar, tratar, curar ou prevenir qualquer doença. As notas de evidência apresentadas são baseadas em nossa análise de pesquisas revisadas por pares publicadas e não constituem aconselhamento médico. Sempre consulte seu profissional de saúde antes de iniciar qualquer regime de suplementação.