I copied this from the "sticky" thread: life extension male hormone modulation therapy-
"Testosterone Patches, Creams, Pellets, and Tablets
Synthetic testosterone "steroid" drugs are chemically different from the testosterone your body makes and do not provide the same effect as natural testosterone. Some of the synthetic testosterone drugs to avoid using on a long-term basis are methyltestosterone, danazol, oxandrolone, testosterone propionate, cypionate, or enanthate.
The fact that testosterone is marketed as a "drug" does not mean it is not the same natural hormone your body produced. Scientists learned decades ago how to make the identical testosterone that your body produces, but since natural testosterone could not be patented, drug companies developed all kinds of synthetic testosterone analogs that could be patented and approved by the FDA as new drugs. Currently available recommended natural testosterone drugs are:
* Androderm Transdermal System (SmithKline Beecham's testosterone patch)
* Testoderm Transdermal System (Alza's testosterone patch)
* Testosterone creams, pellets, and sublingual tablets (available from compounding pharmacies)"
There is some misinformation in this section. The testosterone that is in androgel, testim, test enthanate, cyp etc is the same molecule as the testosterone in your body. The testosterone is not what is patented, it is the method in which it is delivered. Once the testosterone molecule is absorbed through the skin, or cleaved from the carrier in the injectable, it is identical to that which is naturally produced from the body. These are not "synthetic testosterone analogs." I would consider those to be the actual steriods such as dianabol, deca, anavar and the others.
Other than that it it a very informative posting.