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Extrato de chá verde para Alopecia Androgenética

C

Baseado em 3 estudos com 150 participantes no total. 3/3 estudos mostram efeitos positivos.

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            C

        

        

            
Conclusão

            
            
Green tea extract has very limited evidence for androgenetic alopecia — while early findings are positive, the research is too preliminary to draw meaningful conclusions.

            
            
            
    
                
                
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                    Only 3 studies exist, with no randomized controlled trials
                
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                    EGCG in green tea may have anti-androgenic properties relevant to pattern hair loss
                
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  • 
                    
                    The single interventional study used a multi-ingredient serum, not green tea extract alone
                
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                    Much more research is needed before green tea extract can be recommended for hair loss
                
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Key Study Findings





    

        
        

            

                
                    narrative review
                
                
                
                
            

            
                An Overview of Commonly Used Natural Alternatives for the Treatment of Androgenetic Alopecia, with Special …
            
            

                
                Dose: not specified
                
                
                vs: Placebo
                
                
                
                Efeito: None
                
                
                None
                
            

            
        

        
        

            

                
                    open-label single-arm interventional study
                
                
                n=150
                
                
                8 weeks
                
                
                Open-label
                
            

            
                Real-World, Open-Label Study of the Efficacy and Safety of a Novel Serum in Androgenetic Alopecia.
            
            

                
                Dose: twice daily application
                
                
                vs: Placebo
                
                
                
                Efeito: None
                
                
                None
                
            

            
        

        
        

            

                
                    Observational Study
                
                
                n=10
                
                
                24 weeks
                
                
                Single-blind
                
            

            
                An Open-Label Evaluator Blinded Study of the Efficacy and Safety of a New Nutritional Supplement …
            
            

                
                Dose: Forti5 (green tea, omega-3/6, vit D, melatonin, etc)
                
                
                vs: baseline
                
                
                Outcome: terminal hair count and Hair Mass Index
                
                
                Efeito: 5.9% hair count increase, 9.5% HMI increase
                
                
                0.014
                
            

            
            
População: Adults with androgenetic alopecia

            
        

        
        

            

                
                    In Vitro
                
                
                
                
            

            
                Green tea in dermatology.
            
            

                
                Dose: None
                
                
                vs: None
                
                
                Outcome: hair loss
                
                
                Efeito: None
                
                
                None
                
            

            
            
População: cancer patients

            
        

        
    







    
    

        
        

            

  
Key Statistics





            


    

        
5

        
Estudos

    

    

        
160

        
Participantes

    

    

        
            
            ↑
            
        
        
Positive

    

    

        C

        
Nota

    




        


        
        
        

            

  
Referenced Papers





            

                
                

                    

                        
                            An Overview of Commonly Used Natural Alternatives for the Treatment of Androgenetic Alopecia, with Special Emphasis on Rosemary Oil.
                        
                        
                            
                                Review
                            
                            
                            
                        
                    

                    

                        Clinical, cosmetic and …
                        2024
                        
                        7 citações
                        
                    

                

                
                

                    

                        
                            Real-World, Open-Label Study of the Efficacy and Safety of a Novel Serum in Androgenetic Alopecia.
                        
                        
                            
                                Other
                            
                            
                            
                        
                    

                    

                        Journal of drugs …
                        2023
                        
                        8 citações
                        
                    

                

                
                

                    

                        
                            An overview of herbal alternatives in androgenetic alopecia.
                        
                        
                            
                                Review
                            
                            
                            
                        
                    

                    

                        Journal of cosmetic …
                        2019
                        
                        100 citações
                        
                    

                

                
                

                    

                        
                            An Open-Label Evaluator Blinded Study of the Efficacy and Safety of a New Nutritional Supplement in Androgenetic Alopecia: A Pilot …
                        
                        
                            
                                Other
                            
                            
                            
                        
                    

                    

                        The Journal of …
                        2017
                        
                        18 citações
                        
                    

                

                
                

                    

                        
                            Green tea in dermatology.
                        
                        
                            
                                Review
                            
                            
                            
                        
                    

                    

                        Skinmed
                        2012
                        
                    

                

                
            

        

        

        
        
        

            

  
Dosage & Usage





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


            
            

                
Dosagens Comumente Utilizadas

                

                    
                    

                        
general:

                        
250-500 mg/day (standardized to 50% EGCG)

                    

                    
                

                
                

                    Limite superior: 800 mg EGCG/day
                

                
            

            

            
            

                
Dosagens Estudadas em Pesquisas

                

                    

                        
                            

                                Dosagem
                                Duração
                                Efeito
                                N
                            

                        
                        
                            
                            

                                not specified
                                --
                                
                                    
                                    Positive
                                    
                                
                                --
                            

                            
                            

                                twice daily application
                                8 weeks
                                
                                    
                                    Positive
                                    
                                
                                150
                            

                            
                            

                                Forti5 (green tea, omega-3/6, vit D, melatonin, etc)
                                24 weeks
                                
                                    
                                    Positive
                                    
                                
                                10
                            

                            
                            

                                None
                                --
                                
                                    
                                    Positive
                                    
                                
                                --
                            

                            
                        
                    

                

            

            

            
            

                Melhor horário: Between meals to minimize iron absorption interference; avoid evening doses
            

            
        

        

        
        
        

            

  
Safety & Side Effects





            

                
                

                    
Efeitos Colaterais Relatados

                    
    
                        
                        
  • 
                            ⚠
                            Liver toxicity at very high doses (rare but documented)
                        
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                            ⚠
                            Stomach upset and nausea
                        
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                            ⚠
                            Insomnia due to caffeine content
                        
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  • 
                            ⚠
                            Iron absorption reduction
                        
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Interações Conhecidas

                    
    
                        
                        
  • 
                            ●
                            Blood thinners (EGCG may have antiplatelet properties)
                        
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  • 
                            ●
                            Iron supplements (tannins in green tea reduce iron absorption)
                        
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  • 
                            ●
                            Stimulants (additive caffeine effects)
                        
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  • 
                            ●
                            Hepatotoxic drugs (additive liver stress at high doses)
                        
    • 
                        
                    

                

                

                
                

                    

                        Ingestão máxima tolerável: 800 mg EGCG/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 Extrato de chá verde help with Alopecia Androgenética?
            
        
        

            Based on 5 studies with 160 participants, there is limited but promising evidence that Extrato de chá verde may support Alopecia Androgenética management. Our evidence grade is C (Some Evidence).
        

    

    
    

        
            How much Extrato de chá verde should I take for Alopecia Androgenética?
            
        
        

            Studies have used various dosages. A commonly studied range is 250-500 mg/day (standardized to 50% EGCG). Always consult your healthcare provider before starting any supplement regimen.
        

    

    
    

        
            Are there side effects of Extrato de chá verde?
            
        
        

            Reported side effects may include Liver toxicity at very high doses (rare but documented), Stomach upset and nausea, Insomnia due to caffeine content, Iron absorption reduction. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
        

    

    
    

        
            How strong is the evidence for Extrato de chá verde and Alopecia Androgenética?
            
        
        

            We rate the evidence as Grade C (Some Evidence). This rating is based on 5 peer-reviewed studies with 160 total participants. The overall direction of effect is positive.
        

    

    




        

        

        
        
        

            

  
Related Evidence





            

                
                
                

                
            

        

        

    


    
    












    

        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.