Testosterone Undecanoate Injection

Product DescriptionTestosterone Undecanoate is a unique oral testosterone product. One of the more recently developed esters, 40 mg of Testosterone Undecanoate, based in oil (oleic acid) are sealed inside a capsule. The design of this compound is quite different from that of most oral steroid medications. Drugs administered orally generally enter the blood stream through the liver. When a compound is given this way without some form of structural protection, it will be quickly broken down during this "first pass". This process leaves very little testosterone intact, basically deactivating the drug. Adding a methyl group (c-17 AA) to the structure is one way to protect it from this process, however stress can be placed on the liver as a result. The designers of this product sought another way to protect the testosterone molecule. This was accomplished by making a form of testosterone that would be absorbed through the lymphatic system. This is due to its high fat solubility brought about by the ester, and its suspension in oil. Having the compound absorbed this way is very advantageous, as this allows it to bypass the first-pass through the liver. This should permit the compound to enter the blood stream intact, without the need for a chemical alteration. The ester breaks off once it is in circulation, yielding free active testosterone.

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