4F-MPH

4F-MPH is 4-Fluoromethylphenidate (Fluoritalin). It releases a little more Norepinephrine than Ritalin (Methylphenidate, MPH), and like at least triple the amount of Dopamine as Ritalin (Methylphenidate, MPH). 4F-MPH dose range is 5mg to 15mg+ and it lasts around 3 to 6 hours.

Tony: I took 15mg of 4F-MPH and cleaned and then studied for 5 hours straight.