What Is The Effect Of Using 4-fluoroamphetamine?

I am taking a Research Chemical for recreational purposes and I do know how dangerous and stupid doing it can be so I don t need to hear that with all due respect. The chemical to my best knowledge is 4-fluoroamphetamine and it is a white powder substance. I have a few questions concerning it s effects. 1: The knuckles closest to the tips of my fingers turn darker after use and also seem to raise up a bit. 2: My urine and breath smell the same due to it.. A very strong pungent odor. The best way to describe this is a mixture of halitosis and asparagus urine. 3: I snort this powder. It completely clears my airway until about two hours after my last dose. After that, my nostrils clog with a THICK yellow mucus. It is resistant to everything as it sticks to my nose. Q-tips slide right over it to no avail and blowing my nose only lines the entire nostril with the gunk and it clogs further. In about two days I m back to normal. Any feedback would be amazing. If you can tell me with some certainty of the dangers of this very untested drug I would consider cutting it out completely