Something stimulating for veins by LG sciences to get insanely vascular they say, with a spray for bodybuilders after a workout of muscle, well-- I'v sprayed this on my cock and things do get bigger, a good vibrater getting circulation going and then the spray! No ill effects no matter how much I have used, has L Arginine in it and more, gets your balls real hot! be carefull. I also used skulpt a spray for abs reduction of fat, has yohimbe in it, will stain cloths , but using it made me pre cum when I used it along with yohimbe or testerone tabs for working out!