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Magnesium L-Threonate for Memory Loss

B

The only magnesium form demonstrated to cross the blood-brain barrier effectively. A 30-day RCT using Magtein PS showed significant improvements across all five subcategories of clinical memory testing and overall memory quotient scores.

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            B

        

        

            
The Bottom Line

            
            
The only magnesium form demonstrated to cross the blood-brain barrier effectively. A 30-day RCT using Magtein PS showed significant improvements across all five subcategories of clinical memory testing and overall memory quotient scores.

            
            
        

    










    

  
Key Study Findings





    

        
        

            

                
                    Review
                
                
                
                
            

            
                Targeting the NMDA receptor subunit NR2B for treating or preventing age-related memory decline.
            
            

                
                Dose: None
                
                
                vs: None
                
                
                Outcome: Age-related memory decline via NR2B upregulation
                
                
                Effect: None
                
                
                None
                
            

            
            
Population: Elderly with age-related memory decline

            
        

        
    







    
    

        
        

            

  
Key Statistics





            


    

        
6

        
Studies

    

    

        
450

        
Participants

    

    

        
            
            ↑
            
        
        
Positive

    

    

        B

        
Grade

    




        


        
        
        

            

  
Referenced Papers





            

                
                

                    

                        
                            Targeting the NMDA receptor subunit NR2B for treating or preventing age-related memory decline.
                        
                        
                            
                                Review
                            
                            
                            
                        
                    

                    

                        Expert opinion on …
                        2014
                        
                        55 citations
                        
                    

                

                
            

        

        

        
        
        

            

  
Dosage & Usage





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


            
            

                
Commonly Used Dosages

                

                    
                    

                        
general:

                        
1,500-2,000 mg/day (providing ~144 mg elemental magnesium)

                    

                    
                    

                        
cognitivesupport:

                        
2,000 mg/day

                    

                    
                

                
                

                    Upper limit: 350 mg/day elemental magnesium from supplements (IOM)
                

                
            

            

            
            

                
Dosages Studied in Research

                

                    

                        
                            

                                Dosage
                                Duration
                                Effect
                                N
                            

                        
                        
                            
                            

                                None
                                --
                                
                                    
                                    Positive
                                    
                                
                                --
                            

                            
                        
                    

                

            

            

            
            

                Best taken: Evening preferred (may support sleep quality); split into 2-3 doses
            

            
        

        

        
        
        

            

  
Safety & Side Effects





            

                
                

                    
Reported Side Effects

                    
    
                        
                        
  • 
                            ⚠
                            Drowsiness
                        
    • 
                        
                        
  • 
                            ⚠
                            Headache
                        
    • 
                        
                        
  • 
                            ⚠
                            Gastrointestinal discomfort
                        
    • 
                        
                        
  • 
                            ⚠
                            Mild diarrhea
                        
    • 
                        
                    

                

                

                
                

                    
Known Interactions

                    
    
                        
                        
  • 
                            ●
                            Antibiotics (quinolones, tetracyclines — reduced absorption)
                        
    • 
                        
                        
  • 
                            ●
                            Bisphosphonates (reduced absorption)
                        
    • 
                        
                        
  • 
                            ●
                            Diuretics (may affect magnesium levels)
                        
    • 
                        
                        
  • 
                            ●
                            Muscle relaxants (additive sedation)
                        
    • 
                        
                    

                

                

                
                

                    

                        Tolerable upper intake: 350 mg/day elemental magnesium from supplements (IOM)
                    

                

                
            

            

                Always consult your healthcare provider before starting any supplement.
            

        

        

        
        
        

            

  
Frequently Asked Questions





            




    
    

        
            Does Magnesium L-Threonate help with Memory Loss?
            
        
        

            Based on 6 studies with 450 participants, there is moderate evidence from clinical studies that Magnesium L-Threonate may support Memory Loss management. Our evidence grade is B (Good Evidence).
        

    

    
    

        
            How much Magnesium L-Threonate should I take for Memory Loss?
            
        
        

            Studies have used various dosages. A commonly studied range is 1,500-2,000 mg/day (providing ~144 mg elemental magnesium). Always consult your healthcare provider before starting any supplement regimen.
        

    

    
    

        
            Are there side effects of Magnesium L-Threonate?
            
        
        

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

    

    
    

        
            How strong is the evidence for Magnesium L-Threonate and Memory Loss?
            
        
        

            We rate the evidence as Grade B (Good Evidence). This rating is based on 6 peer-reviewed studies with 450 total participants. The overall direction of effect is positive.
        

    

    




        

        

        
        
        

            

  
Related Evidence





            

                
                
                

                
                

                    
Magnesium L-Threonate for other conditions

                    

                        
                        
                            Sleep-Related Cognitive Impairment
                            C

                        
                        
                    

                

                
            

        

        

    


    
    












    

        FDA Disclaimer:
        These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.