I've been using it for the last 9 months. All from one supplier, but it does look different from one order to the next at times. Never seen of heard of "fake" stuff, just differing potencies from different suppliers. China makes alot of the peptides, some are good as american made, most are not. Use a MT2 chart to see how much you should take, the more you weigh the more you use. I'm 215 and mix 2.5 ml BW and use .25tics of the slinpin ed when I want to get dark. It actually has my wieght using twice that much ed, but dependng on your skin type and the UV exposure that you are expecting to get, most find the chart high. I'm skin type 2 and got damn near black after I got 40 mgs in and went to Hawaii. I had to cut back to get to a more natural look.
Lots more "stuff" to consider and know, if you want more info, just hit me up.
Shit will give 9 out of 10 men an increased libido AND the bone to use as well. Doesn't happen to as many women unfortunately, only small percentage.
Tx