I'm going to keep an updated log of my PGCL use. This is my 3rd day on and I like it so far. The cost isn't much around $25 for 500mcgs this should last a week or so depending on how many times per day you are using it. You should get 20 shots out of 1 amp. Day 1 I did 2 shots one in each calf hardly any pain but did make me super hot and had to go to the restroom about 20mins after each shot. Day 2 did 2 shots 1 in each outer bicep. Now day 3 did 1 shot in the inner bicep this morning my whole body feels tight like I have a pump but I haven't trained yet. This should be interesting I'll keep you posted on what happens.