The partition coefficient of the ester in question is important because is effects how long the drug itself stays in the system. If the testosterone transfers too quickly from the oil to the blood, the result is a sudden spike in testosterone which then rapidly drops once the dose has been used up. In the example of free testosterone injected into the muscle from a water suspension (as in Aquiviron, mentioned above), the testosterone is essentially immediately available to the bloodstream due to its low partition coefficient, and thus there is an immediate spike of testosterone which is used up quickly in the body.
For the purpose of understanding and profiling phenylpropionate we will discuss its characteristics as an individual API. Phenylpropionate on its own usually gets administered twice a week or every third day. It has the usual side effects as all other testosterones. It has a high level of aromatization into estrogen and converts to DHT (dihydrotestosterone) as well. Conversion to estrogen creates as per usual gynecomastia and water retention. Water retention and an increase in blood pressure are also expected. Natural HPTA axis shuts down as soon as it gets administered and natural production of testosterone stops. The severity of the side effects is usually dose related and the higher the dose the more the side effects.
CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.