no matter what you are running, you should ALWAYS have an ai on hand... whether or not something is considered to cause gyno or not, you will be surprised how differently we all react... You don't necessarily have to run one from the start on a cycle like this (although I would never risk not doing so) but you should always be prepared or you will end up being one of those guys coming back here begging for help and freaking out because you did not want to spend $50 on an ai... it makes no sense whatsoever and I see it so often... Ag-guys.com has all of your ai's... they are not hard to find... you can also get forma at mrsupps.com as well... there are plenty of options for you...