Types of testosterone

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Propionate: This is a faster acting ester which can peak in the blood within hours and metabolized over 3 days. Injections should be administered every 2-3 days. You must weigh the 'positives' with the 'negatives' before prescribing propionate. Since it metabolizes so quickly, and needs to be administered frequently, it is easy to stabilize levels and optimizes blood-testosterone-levels quickly. On the downside IM injections must be given frequently which can keep patients from remaining compliant. Also, since the levels peak faster there is also an increased chance of aromatizing the testosterone into estrogen and increased DHT conversion which can cause side effects. 100mg of Propionate yields ~93mg of testosterone.

Once a diagnosis of clinically low testosterone levels has been determined, what is the best course of action to restore them? The most impelling means for many adults is to receive a course of prescription testosterone replacement therapy. Both research and actual results consistently indicate that the most effective form of therapy is the implementation of a bio-identical hormone replenishment program for individuals whose levels fall well below the average testosterone levels in men by age . The use of these injections, which must be prescribed and supervised by a licensed physician, can fastidiously increase an adult’s deficient hormonal levels over a specific period of time.

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.

Types of testosterone

types of testosterone

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.

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