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Stockholders' Equity (Deficit) (Details Narrative) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Feb. 20, 2018
Jan. 02, 2017
Feb. 12, 2016
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Jan. 24, 2018
Dec. 31, 2016
Stock options outstanding       3,846,299 2,613,299 3,846,299 2,613,299 3,566,299   2,484,445
Stock options outstanding weighted average exercise price       $ 1.36   $ 1.36   $ 1.33   $ 1.18
Stock options intrinsic value       $ 176,250   $ 176,250        
Number of stock options granted           280,000   1,103,000    
Stock option weighted average exercise price per share           $ 1.75   $ 1.68    
Stock options granted, term           8 years 18 days   9 years 9 months 25 days    
Number of stock options vested           520,684        
Class of warrant or right, outstanding       3,826,658   3,826,658   3,826,658    
Class of warrant or right, outstanding, weighted average exercise price       $ 1.05   $ 1.05   $ 1.05    
Class of warrant or right, outstanding, intrinsic value       $ 763,342   $ 763,342        
Series B Preferred Stock [Member] | Private Placement [Member]                    
Class of warrant or right, number of securities called by warrants or rights       423,291   423,291        
Class of warrant or right, exercise price of warrants or rights     $ 1.25 $ 1.25   $ 1.25        
Class of warrant or right, expiration period     5 years     5 years        
Protagenic Therapeutics Inc [Member]                    
Debt instrument, face amount       $ 665,000   $ 665,000        
Accrued interest       $ 35,000   $ 35,000        
Protagenic Therapeutics Inc [Member] | Predecessor Warrants [Member]                    
Class of warrant or right, number of securities called by warrants or rights       295,945   295,945        
Class of warrant or right, exercise price of warrants or rights       $ 1.25   $ 1.25        
Protagenic Therapeutics Inc [Member] | Placement Agent Warrants [Member]                    
Class of warrant or right, number of securities called by warrants or rights       127,346   127,346        
Class of warrant or right, exercise price of warrants or rights       $ 1.25   $ 1.25        
Protagenic Therapeutics Inc [Member] | Series B Preferred Stock [Member] | Private Placement [Member]                    
Class of warrant or right, number of securities called by warrants or rights       3,403,367   3,403,367        
Class of warrant or right, exercise price of warrants or rights       $ 1.05   $ 1.05        
Four Consultant [Member]                    
Number of stock options granted           80,000        
Stock option granted vesting period           48 months        
Stock options granted, term           10 years        
Number of stock options vested           50,000        
Former Consultant [Member]                    
Stock options outstanding weighted average exercise price       $ 1.75   $ 1.75        
Consulting Agreement [Member] | Neuro Assets Sarl [Member]                    
Share-based compensation arrangement by share-based payment award, number of shares authorized                 200,000  
Employee [Member]                    
Compensation expense       $ 145,422   $ 311,635        
Non-Employee [Member]                    
Compensation expense         $ 117,726   $ 296,160      
Four Consultants [Member] | Over Fourty Eight Months [Member]                    
Number of stock options vested           30,000        
Stock Option [Member]                    
Number of stock options granted       280,000 150,000      
Stock option weighted average exercise price per share           $ 1.75 $ 1.25      
Compensation expense       $ 263,148 $ 145,541 $ 607,795 $ 500,877      
Employee Stock Option [Member]                    
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized       1,579,637   $ 1,579,637        
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition           2 years 7 months 28 days        
Employee Stock Option [Member] | Employee [Member]                    
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized       769,566   $ 769,566        
Employee Stock Option [Member] | Non-Employee [Member]                    
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized       $ 810,071   $ 810,071        
The 2016 Plan [Member]                    
Number of additional shares grants for issuance   564,378                
Number of shares available for grant   2,712,678                
Share-based payment award, expiration period   10 years                
2016 Equity Compensation Plan [Member]                    
Stock options outstanding weighted average exercise price $ 1.75                  
Stock option granted vesting period 48 months                  
Stock options granted, term 10 years                  
2016 Equity Compensation Plan [Member] | Consulting Agreement [Member]                    
Share-based compensation arrangement by share-based payment award, number of shares authorized 200,000                  
Stock option granted vesting period 48 months                  
Stock options granted, term 10 years