Prohormone & Supplement Ingredients:

1,4,6 etioallocholan-dione (ATD)

Same thing as 1,4,6-androstatriene-3,17-dione.

ATD is an aromatase inhibitor (AI) and often praised for its estrogen control ability. By blocking the enzyme that converts testosterone to estrogen, AIs can prevent some of the androgenic side effects associated with prohormone and steroid use such as gyno and water retention.

It's been proven an effective AI in animal and cell culture studies, but there's little evidence or information on its effects in humans. AIs, especially prescription AIS such as anastrozole, have been proven effective, but the increases are within normal limits. AIs don't elevate natural testosterone to the levels seen with pro-hormones and steroids. Over-the-counter AIs were originally developed to help restore normal testosterone production after a prohormone/steroid cycle during the post cycle recovery phase, yet as stand-alone test boosters, they're not proven to be effective.
Supplements with this ingredient:
Methyl 1-D (Test Boosters/Hormone Regulation)

Links to additional information on 1,4,6 etioallocholan-dione (ATD)
1,4,6-Androstatrien-3,17-dione (ATD): Potent Irreversible Aromatase Inhibitor (Added on 1/10/2011)

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