Thank You, I was on 2iu for a couple years back in 2010 but had to get off because of $. I was paying a lot more but was using kits from HIV patients that sold to my guy. These are affordable for me and think I'll give them a try.You’ll have to decide if they’re “good for you”, but I’ve had good luck with his kits. I’m in my early 40’s, and prescribed growth from my trt doctor, but it’s like $400 a month, running .5iu 5x a week. Where I can run 5x 3iu a week from Opti for somewhere around $100 a month. It’s a no-brainer, for me, personally.