Hello, Thank you for trusting HCM. Well all exogenous testosterone will help in building muscle at a faster rate, but with consequences, one of the very common side effects of deca is deca dick which is flacid penis during sexual intercourse! i would recommend that you finish your current cycle and get your test level back to normal naturally and never take testosterone supplements again, the risks ranges from azospermia to liver cancer and brain tumors plus hypertention and gynecomastia. I know its tempting to use them but the price you pay no one will tell you about it, the professional people they have access to medical support on daily basis and they can afford ruining their bodies, and you have good mass so no need for such supplements add some cardio change your workout routine will help getting the shape you want. Another thing the gains you will have on Deca you will eventually lose down the road, but Good old fashion muscle will always be there for you to count on unless you plan to take those hormones for the rest of your life. Think and choose wisely. hope this helped. Dr. Ahmad