No....
b12 is general weakness...
It's because of sexual weakness and loss of libido..
To get rid of this problem permanently..
To enjoy sexual activity completely for 30to40 minutes..
Erection will remain hard..
Take ayurvedic medicine..
Next Steps
for further information consult me privately
Health Tips
quit smoking and drinking if any..
be stress free and take sleep of 8to9 hours..
Eat healthy food and nuts...