Originally Posted by Clarkk
BigGenes is right. Injecting too fast causes more pain later. When you are injecting too fast, you will feel some discomfort in the injection area. The solution you are injecting is injected so fast that it does not have time to dissipate and tears tissue. This causes pain in the area, hours and even days later. If you slow down, maybe 60 seconds per cc, (guess) you should eliminate the discomfort (a pressure feeling in the injection site) and eliminate subsequent pain from the injection.