Anabolic discussion boards
By doing this, they allow less testosterone to bind to aromatase. anabolic discussion boards Steroid information. So, less testosterone is converted to estradiol (estrogen). Here's an important thing: the effectiveness of competitive inhibitors decreases as the amount of the normal substrate increases. Suppose that you had equal amounts of inhibitor and normal substrate in the blood, and they bound to the enzyme equally well. anabolic discussion boards Bodybuilding-forums. Then the inhibitor would at any moment be taking up half the sites that the normal substrate otherwise would, so it would reduce conversion rate by 50%. But if the amount of substrate is increased 10 times while the amount of inhibitor remains the same, then the inhibitor would be outcompeted by the more numerous substrate molecules. It would therefore be rather ineffective. anabolic discussion boards Videos on steroids. For example, with more testosterone molecules available, and similar binding strengths, the enzyme will mostly bind testosterone. It will then mostly be working to produce estrogen. To obtain the 50% reduction we had before, then the amount of inhibitor would also have to be increased 10 times. To be really effective, the inhibitor must either be present in higher concentration than the normal substrate, or must bind more tightly. With Cytadren or Proviron, it takes quite a lot of inhibitor to outcompete high testosterone levels. With Arimidex, rather little, even 1 mg/day, can be sufficient because it binds so strongly. The other general approach is estrogen receptor antagonism. If a molecule binds strongly to a hormone receptor, but does not activate that receptor and makes it unresponsive to the normal hormone, then it is a receptor antagonist. Clomid (clomiphene) and Nolvadex (tamoxifen) follow this approach. These drugs are very similar structurally. They are both what are called triphenylethylenes, and are not steroids. The differences are relatively minor, but seem to affect an important characteristic of these compounds: drug metabolism. Both tamoxifen and clomiphene are metabolized to other related compounds which can be estrogenic or anti-estrogenic.
Anabolic discussion boards
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