Yes, for Human Chorionic Gonadotropin (HCG) you will need bac water to mix it and a sterile vial to store it. It's a sub-q injections so most guys use slin pins for it. Human Chorionic Gonadotropin (HCG) mimics LH, a hormone produced by the pituitary gland that tells your nuts what to do. When you're on cycle, everything shuts down and your nuts will shrink from atrophy. Human Chorionic Gonadotropin (HCG) will trick them into staying awake. They're not really doing much, but they stay full size and ready to go, so when you start PCT they come back much faster than they would otherwise. Some guys like to blast Human Chorionic Gonadotropin (HCG) for a few weeks at the end to plump them up just before PCT, but I prefer to run it during the cycle. I recommend 250iu 2X per week. I pin on the same day as test. You want your last pin to be 3 or 4 days before you start PCT. There is no point in starting Human Chorionic Gonadotropin (HCG) on day one, because nothing is suppressed yet, it's best to start around week 2, but the ending date is more important than the start date, so if you have a limited amount of HCG, back calculate the start date based on when your PCT will start. If you are running a 12 week cycle, with 24 test pins and only have 1 vial of 5000iu HCG, you would start the HGC on the same day as test pin #8 (4 weeks). I recommend making a calendar to map out everything you're going to do, that way you don't have to think about it any more, just do what the calendar says. That's the easiest way to make sure all of your times line up and you don't get confused or forget along the way. By the way, keep the Human Chorionic Gonadotropin (HCG) in the fridge. A lot of places say it will only last 4 weeks, but it will be OK for 10 weeks. Last pin might not be as strong as the first, but it's good enough.