I had tried the Moonstruck II before and i liked it, but this new formula gives you an insane pump due to the added citruline dosage. My veins were popping out like never before after my taining session. I also felt way more focused, i feel like the focus complex is also way better in this one. Only side effect was a bit of stomach disconfort, i think the citruline has trouble dissolving in this high quantity, but I have to experiment better with the water dosage.