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Testosterone

Testosterone is a hormone found in humans, as well as in other animals. The testicles primarily make testosterone in men. Women’s ovaries also make testosterone, though in much smaller amounts.

The production of testosterone starts to increase significantly during puberty, and begins to dip after age 30 or so.

Testosterone is most often associat...

Testosterone is a hormone found in humans, as well as in other animals. The testicles primarily make testosterone in men. Women’s ovaries also make testosterone, though in much smaller amounts.

The production of testosterone starts to increase significantly during puberty, and begins to dip after age 30 or so.

Testosterone is most often associated with sex drive, and plays a vital role in sperm production. It also affects bone and muscle mass, the way men store fat in the body, and even red blood cell production. A man’s testosterone levels can also affect his mood.

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Subcategories

  • Testosterone Suspension

    Testosterone Suspension is perhaps the oldest anabolic steroid preparation, first isolated and synthesized in the early 1930s by German scientists. It is the very first preparation of Testosterone to ever be created for use, and pre-dates the slower acting esterified variants of Testosterone by a matter of several years. Testosterone Propionate was developed towards the mid-1930s, and Testosterone Enanthate was available in the 1950s, but Testosterone Suspension still remained popular during this period of time even though it was widely regarded as a much more crude form of Testosterone that was inconvenient and uncomfortable to inject due to the painful injections, and the very short half-life that necessitated very frequent injections.

  • Testosterone Cypionate

    Testosterone Cypionate was first created in the mid-1950s, and was released on the prescription drug market under the brand name Depo-Testosterone and manufactured by UpJohn (however, its brand name at first was labeled as Depo-Testosterone cyclopentylpropionate but was shortened for obvious reasons).

  • Testosterone Propionate

    Testosterone Propionate’s details and information were first published and released in 1935 as a result of various methods to determine the best possible manner of maximizing the uses of Testosterone itself, because as mentioned above, Testosterone un-esterified possesses a very short half-life. Shortly afterwards, Schering AG (located in Germany) began manufacturing and releasing on the market the very first Testosterone Propionate  product under the trade name Testoviron, which is to this day still a very popular brand name. Testosterone Propionate was the very first esterified variant of Testosterone to ever be created, and is the oldest used esterified form of Testosterone dating back to the mid-1930s.

  • Testosterone Enanthate

    The Enanthate variant of Testosterone had first been described in the early 1950s when it had landed on the market and experienced increasingly extensive use shortly thereafter. This was the very first injectable Testosterone ester preparation that provided slower release rates.  In the United States, Delatestryl manufactured by Squibb was the very first Testosterone Enanthate product to be marketed, and it is still manufactured and marketed today. Internationally (outside of North America, mostly) the brand name for Testosterone Enanthate is known  as Testoviron, which unlike Delatestryl, has been manufactured by Schering ever since its original inception well over 50 years ago.

  • Testosterone Blends...

    Sustanon is provided as an oil solution and is administered by intramuscular injection. The different testosterone esters provide for different elimination half-lives in the body. Esterification of testosterone provides for a sustained but non-linear release of testosterone hormone from the injection depot into the circulation.