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L-Theanine pour Troubles du Sommeil Liés à l'Anxiété

B

Basé sur 2 études (1 meta-analysis). 2/2 études montrent des effets positifs.

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            B

        

        

            
En conclusion

            
            
L-theanine may help improve sleep when anxiety is a factor, but the specific evidence for this use is limited to just two positive studies.

            
            
            
    
                
                
  • 
                    
                    Both studies show positive effects, but the evidence base is small
                
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  • 
                    
                    L-theanine promotes relaxation by boosting alpha brain waves without causing drowsiness
                
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  • 
                    
                    Found naturally in green and black tea — a familiar and well-tolerated compound
                
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  • 
                    
                    Grade B evidence — promising direction but needs more dedicated research
                
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Key Study Findings





    

        
        

            

                
                    Meta-Analysis
                
                
                
                
            

            
                Medicinal herbs for the treatment of anxiety: A systematic review and network meta-analysis.
            
            

                
                Dose: Various medicinal herbs: Silexan, Kava, Ginkgo biloba, Withania somnifera, Galphimia glauca, Passion
                
                
                vs: Placebo
                
                
                
                Effet: Silexan MD -3.84 (95% CrI -6.31 to -1.34); Kava MD -2.46 (95% CrI -4.47 to -0.32); Ginkgo biloba MD 
                
                
                None
                
            

            
        

        
    







    
    

        
        

            

  
Key Statistics





            


    

        
2

        
Études

    

    

        
--

        
Participants

    

    

        
            
            ↑
            
        
        
Positive

    

    

        B

        
Note

    




        


        
        
        

            

  
Referenced Papers





            

                
                

                    

                        
                            Medicinal herbs for the treatment of anxiety: A systematic review and network meta-analysis.
                        
                        
                            
                                Meta-Analysis
                            
                            
                            
                        
                    

                    

                        Pharmacological research
                        2022
                        
                        51 citations
                        
                    

                

                
                

                    

                        
                            Formulations of dietary supplements and herbal extracts for relaxation and anxiolytic action: Relarian.
                        
                        
                            
                                Review
                            
                            
                            
                        
                    

                    

                        Medical science monitor …
                        2009
                        
                        85 citations
                        
                    

                

                
            

        

        

        
        
        

            

  
Dosage & Usage





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


            
            

                
Posologies couramment utilisées

                

                    
                    

                        
sleep:

                        
200-400 mg, 30-60 min before bed

                    

                    
                

                
                

                    Limite supérieure : Not established; generally safe up to 900 mg/day
                

                
            

            

            
            

                
Posologies étudiées dans la recherche

                

                    

                        
                            

                                Posologie
                                Durée
                                Effet
                                N
                            

                        
                        
                            
                            

                                Various medicinal herbs: Silexan, Kava, Ginkgo biloba, Withania somnifera, Galphimia glauca, Passion
                                --
                                
                                    
                                    Positive
                                    
                                
                                --
                            

                            
                        
                    

                

            

            

            
            

                Moment optimal de prise : 30-60 minutes before bed
            

            
        

        

        
        
        

            

  
Safety & Side Effects





            

                
                

                    
Effets indésirables signalés

                    
    
                        
                        
  • 
                            ⚠
                            Headache
                        
    • 
                        
                        
  • 
                            ⚠
                            Dizziness
                        
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  • 
                            ⚠
                            GI discomfort
                        
    • 
                        
                    

                

                

                
                

                    
Interactions connues

                    
    
                        
                        
  • 
                            ●
                            Blood pressure medications — L-theanine may lower blood pressure
                        
    • 
                        
                        
  • 
                            ●
                            Stimulants (caffeine) — may partially counteract stimulant effects
                        
    • 
                        
                        
  • 
                            ●
                            Sedatives — potential additive calming effects
                        
    • 
                        
                    

                

                

                
                

                    

                        Apport maximal tolérable : Not established; generally safe up to 900 mg/day
                    

                

                
            

            

                Consultez toujours votre professionnel de santé avant de commencer tout complément alimentaire.Consultez toujours votre professionnel de santé avant de commencer tout complément alimentaire.
            

        

        

        
        
        

            

  
Frequently Asked Questions





            




    
    

        
            Does L-Theanine help with Troubles du Sommeil Liés à l'Anxiété?
            
        
        

            Based on 2 studies with 0 participants, there is moderate evidence from clinical studies that L-Theanine may support Troubles du Sommeil Liés à l'Anxiété management. Our evidence grade is B (Good Evidence).
        

    

    
    

        
            How much L-Theanine should I take for Troubles du Sommeil Liés à l'Anxiété?
            
        
        

            Studies have used various dosages. A commonly studied range is 200-400 mg, 30-60 min before bed. Always consult your healthcare provider before starting any supplement regimen.
        

    

    
    

        
            Are there side effects of L-Theanine?
            
        
        

            Reported side effects may include Headache, Dizziness, GI discomfort. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
        

    

    
    

        
            How strong is the evidence for L-Theanine and Troubles du Sommeil Liés à l'Anxiété?
            
        
        

            We rate the evidence as Grade B (Good Evidence). This rating is based on 2 peer-reviewed studies with 0 total participants. The overall direction of effect is positive.
        

    

    




        

        

        
        
        

            

  
Related Evidence





            

                
                

                    
Autres ingrédients pour Troubles du Sommeil Liés à l'Anxiété

                    

                        
                        
                            CBD
                            A

                        
                        
                        
                            Kava
                            A

                        
                        
                        
                            Lavande
                            A

                        
                        
                        
                            Passiflore
                            A

                        
                        
                        
                            Racine de valériane
                            B

                        
                        
                        
                            Basilic sacré
                            B

                        
                        
                    

                

                

                
                

                    
L-Theanine pour d'autres pathologies

                    

                        
                        
                            Insomnie
                            A

                        
                        
                        
                            Difficulté d'Endormissement
                            A

                        
                        
                    

                

                
            

        

        

    


    
    












    

        Avertissement FDA:
        Ces déclarations n'ont pas été évaluées par la Food and Drug Administration. Les produits et informations sur ce site ne sont pas destinés à diagnostiquer, traiter, guérir ou prévenir quelque maladie que ce soit. Les notes de preuve présentées sont basées sur notre analyse de la recherche publiée et évaluée par des pairs et ne constituent pas un avis médical. Consultez toujours votre professionnel de santé avant de commencer tout régime de compléments alimentaires.