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L-半胱氨酸 用于 休止期脱发

D

基于2项研究。2/2项研究显示积极效果。

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结论

            
            
There is insufficient evidence to determine whether L-Cysteine helps with telogen effluvium — while it is important for hair protein structure, no clinical studies have tested it for this condition.

            
            
            
    
                
                
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                    Only 2 studies available, neither involving human participants with telogen effluvium
                
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  • 
                    
                    L-Cysteine is a sulfur-containing amino acid essential for keratin production
                
    • 
                
                
  • 
                    
                    Often included in combination hair supplements, but its individual contribution is unknown
                
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  • 
                    
                    Dedicated clinical trials are needed to evaluate its specific role in telogen effluvium
                
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Key Study Findings





    

        
        

            

                
                    Review
                
                
                
                
            

            
                Does Vitamin B6 Act as an Exercise Mimetic in Skeletal Muscle?
            
            

                
                Dose: None
                
                
                vs: None
                
                
                Outcome: None
                
                
                效果: None
                
                
                None
                
            

            
            
研究人群: Healthy adults

            
        

        
    







    
    

        
        

            

  
Key Statistics





            


    

        
2

        
研究数量

    

    

        
--

        
受试者

    

    

        
            
            ↔
            
        
        
Mixed

    

    

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等级

    




        


        
        
        

            

  
Referenced Papers





            

                
                

                    

                        
                            Does Vitamin B6 Act as an Exercise Mimetic in Skeletal Muscle?
                        
                        
                            
                                Review
                            
                            
                            
                        
                    

                    

                        International journal of …
                        2024
                        
                        5 次引用
                        
                    

                

                
                

                    

                        
                            Effects of the Usage of l-Cysteine (l-Cys) on Human Health.
                        
                        
                            
                                Review
                            
                            
                            
                        
                    

                    

                        Molecules (Basel, Switzerland)
                        2018
                        
                        120 次引用
                        
                    

                

                
            

        

        

        
        
        

            

  
Dosage & Usage





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


            
            

                
常用剂量

                

                    
                    

                        
hairloss:

                        
500-1,000 mg/day

                    

                    
                

                
                

                    上限： Not established
                

                
            

            

            
            

                
研究中使用的剂量

                

                    

                        
                            

                                剂量
                                持续时间
                                效果
                                N
                            

                        
                        
                            
                            

                                None
                                --
                                
                                    
                                    Neutral
                                    
                                
                                --
                            

                            
                        
                    

                

            

            

            
            

                最佳服用时间： On an empty stomach for better absorption, or with meals if stomach upset occurs
            

            
        

        

        
        
        

            

  
Safety & Side Effects





            

                
                

                    
已报告的副作用

                    
    
                        
                        
  • 
                            ⚠
                            Nausea and gastrointestinal discomfort
                        
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                            ⚠
                            Unpleasant sulfur-like odor
                        
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                            ⚠
                            Headache
                        
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                            ⚠
                            Rare: rash or allergic reaction
                        
    • 
                        
                    

                

                

                
                

                    
已知相互作用

                    
    
                        
                        
  • 
                            ●
                            Nitroglycerin (NAC may enhance vasodilatory effects, causing headache and hypotension)
                        
    • 
                        
                        
  • 
                            ●
                            Activated charcoal (reduces NAC absorption)
                        
    • 
                        
                        
  • 
                            ●
                            Anticoagulants (NAC may have mild antiplatelet properties)
                        
    • 
                        
                    

                

                

                
                

                    

                        可耐受最高摄入量： Not established
                    

                

                
            

            

                在开始服用任何补充剂之前，请务必咨询您的医疗保健提供者。
            

        

        

        
        
        

            

  
Frequently Asked Questions





            




    
    

        
            Does L-半胱氨酸 help with 休止期脱发?
            
        
        

            Based on 2 studies with 0 participants, there is preliminary evidence that needs more research that L-半胱氨酸 may support 休止期脱发 management. Our evidence grade is D (Very Early Research).
        

    

    
    

        
            How much L-半胱氨酸 should I take for 休止期脱发?
            
        
        

            Studies have used various dosages. A commonly studied range is 500-1,000 mg/day. Always consult your healthcare provider before starting any supplement regimen.
        

    

    
    

        
            Are there side effects of L-半胱氨酸?
            
        
        

            Reported side effects may include Nausea and gastrointestinal discomfort, Unpleasant sulfur-like odor, Headache, Rare: rash or allergic reaction. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
        

    

    
    

        
            How strong is the evidence for L-半胱氨酸 and 休止期脱发?
            
        
        

            We rate the evidence as Grade D (Very Early Research). This rating is based on 2 peer-reviewed studies with 0 total participants. The overall direction of effect is mixed.
        

    

    




        

        

        
        
        

            

  
Related Evidence





            

                
                
                

                
                

                    
L-半胱氨酸 用于其他健康状况

                    

                        
                        
                            营养缺乏性脱发
                            D

                        
                        
                    

                

                
            

        

        

    


    
    












    

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