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Methyltestosterone is a pure testosterone hormone that has an added methyl group to make the hormone survive oral administration. The  methyl group is attached to the 17- ^y carbon position, officially classifying methyltestosterone as an anabolic androgenic steroid C17-aa. Like all testosterone hormones, methyltestosterone has an anabolic rating of 100 and an androgenic rating of 100. However, due to the C17-aa alteration, its transforming anabolic activity will be significantly lower than most testosterone compounds.

On a functional basis, methyltestosterone provides the body with testosterone, which it may lack. Because of its low bioavailability and strong estrogenic nature, which we will discuss in the side effects section, this makes it a poor choice for performance. However, we will be able to make one exception for performance when we look at the effects of methyltestosterone.

As a pure testosterone hormone, methyltestosterone is an ideal synthetic model of the major male androgen testosterone. Being synthetic in nature, once in the body, the body will have no difference between it and the testosterone it produces naturally.  Being the main male androgen, women also produce and need testosterone, which often decreases during menopause. However, men need about ten times more of the hormone than women.

Since methyltestosterone is testosterone, it will perform all the functions of the natural hormone. The hormone testosterone greatly affects our physical and sexual well-being and, to some extent, even our mental function. When levels become low, it can negatively affect each of these areas.  Conversely, when low levels are combated with compounds such as methyltestosterone, function returns to where it should be. For more information on the functions and characteristics of testosterone, see Any of the major testosterone profiles - testosterone cypionate, testosterone enanthate, testosterone propionate, or testosterone suspension.

Effects of methyltestosterone:

The effects of methyltestosterone are caused simply by increasing the amount of circulating androgens through the exogenous use of this hormone. This can be done to combat a condition caused by low levels, or it can be to raise androgen levels above baseline to help combat another condition. However, while both are possible, the former is the most common in medical settings.  When this androgen is added, the effects of methyltestosterone should boost a man's libido and increase energy levels, which are often reduced due to low levels of the hormone in the body. This is where the effects of methyltestosterone will be of great benefit to menopausal or andropausal patients. Such conditions will also be the most common place to use this particular version of the testosterone hormone.

Methyltestosterone Side Effects:

• Estrogenic: side effects of methyltestosterone include estrogenic in nature. Such effects are related to the conversion of the hormone testosterone to estrogen due to its interaction with the aromatase enzyme.  Methyltestosterone aromatizes much more slowly than most testosterone compounds due to the 17-alpha methylation of the hormone, but instead of being converted to estradiol, it is converted to methylestradiol. Methylestradiol is an extremely potent estrogenic hormone that can lead to gynecomastia and water retention.

• Androgenic: Methyltestosterone side effects may include androgenic effects. Such effects include acne, accelerated hair loss in individuals predisposed to male-pattern baldness, and body hair growth.  These effects are due to the fact that the hormone is metabolized by the enzyme 5-alpha reductase, which causes the hormone to be reduced to methyldihydrotestosterone (MDHT). However, such effects are highly dependent on genetics and individual sensitivity, but more men will have problems with the androgenic side effects of methyltestosterone than most forms of testosterone.

• Cardiovascular system: Methyltestosterone side effects can include high blood pressure, but this is often controlled when a person controls water retention.  High water retention is known to contribute to high blood pressure. If water retention is controlled, most will not have problems; however, high blood pressure is still possible but unlikely.

• Hepatotoxicity: Methyltestosterone has hepatotoxic effects, but far from what many assume. All C17-aa steroids are toxic to the liver, but the level of toxicity varies from one C17-aa steroid to another.  Therapeutic level doses will place some stress on the liver, liver enzyme values will increase with use, but if the liver has been healthy from the start, no damage is done.  Effective doses will increase the burden on the liver, but we will still find that the overall level of toxicity is less than many C17-aa anabolic steroids. In fact, the hepatotoxicity of methyltestosterone is not consistent with most C17-aa steroids.