Be very careful bro! I have competed locally several times and this last time I decided to take diuretics. I even took a high amount of supplemental potassium along with it. To make a long story short though it almost ended my life. I couldn't hold any poses the day of the show I was so cramped up. A couple days later I was paralyzed from my neck down and was almost suffered cardiac arrest. I would never do it again unless you have a physician to monitor you. You can never know enough, especially when considering an injectable form. Just be careful bro. Good luck!