It isnt necessary to stack MassFX with an AI, but it is recommended. As with any testosterone boosting supplement the chances of estrogen related sides are present - an AI will negate those effects.
We have had some positive reviews of MassFX without an AI. The only problems arising which are...
Yeah he took pictures. Ill let him be the one to post them though, or you can check out his log over at AnabolicX.com:
http://forum.anabolicx.com/index.php?showtopic=527&st=60
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