One of the most important roles of a PCT product is to help re-start and boost natural testosterone production when levels are low post cycle. PCT Xtreme contains a number of ingredients focused on this function. The first ingredient in the blend, D-Aspartic Acid, plays a key role in supporting testosterone levels. Research shows that D-Aspartic Acid has a role in the regulation and release of testosterone in males and that supplementing with D-Aspartic Acid induces an enhancement of testosterone release. A high dosage of Zinc is provided by PCT Xtreme - Zinc is an essential mineral post cycle as it has been proven to directly contribute to normal serum testosterone concentrations. Magnesium Aspartate has also been added to the blend - providing the key ingredients of the popular supplement 'ZMA' (Zinc Magnesium Aspartate) - this blend has been shown to promote significant increases in testosterone, IGF-1 and muscle strength. The blend then includes Menaquinone which has been shown to stimulate testosterone production and contains a high quality extract of Japanese Knotweed which provides trans-Resveratrol - an ingredient shown to enhance testosterone levels in a 2008 study. PCT Xtreme also contains the flavone Chrysin which has been proven to be an aromatase inhibitor. Aromatase inhibition has been found to play an invaluable role in men with low testosterone levels by boosting serum 'free' testosterone and total testosterone into the normal range.
The next key function of PCT Xtreme is to help control estrogen levels which can be elevated post cycle and are now infamous throughout both the bodybuilding community and mainstream media for causing unwanted side effects post cycle. The blend in PCT Xtreme is formulated to combat this. As noted in the previous section, this supplement contains Chrysin - an aromatase inhibitor - whilst this does have benefits for supporting testosterone recovery, it's primary function in PCT Xtreme is to control estrogen. A key study into flavones found that Chrysin, as an inhibitor of the activity of aromatase, decreased estrogen biosynthesis and produced antiestrogenic effects. Additionally, Pyridoxal Phosphate (PLP) is included in PCT Xtreme - PLP has a key role in controlling the action of hormones that act by binding to a nuclear receptor protein - one of these hormones is estrogen. PLP reacts with the receptor that the estrogen hormone would bind to and thus displaces the estrogen hormone and terminates the hormone action. Thus PLP plays an active role in regulating the level of estrogenic activity. As noted previously, PCT Xtreme is a source of trans-Resveratrol, this compound is converted by the body into different forms of 'free' resveratrol in the blood and a 2013 study has shown that the sulphate form is endowed with anti-estrogenic activity. As such, the PCT Xtreme blend not only looks to target the overall estrogen levels in the blood, but also to control estrogenic activity and help the body re-balance as quickly as possible.
Supports Libido & Fertility
A major concern for many users post cycle is to make sure that libido levels are as they should be and that fertility is given full support for a quick recovery. A number of the testosterone boosting ingredients will also support libido & fertility. D-Aspartic Acid is an excellent demonstration of this, it not only supports testosterone levels but has also been proven to improve the number and quality of sperm in men with low sperm count. This is included alongside the mineral Zinc which contributes to fertility and Selenium whch contributes to sperm production. To support libido, PCT Xtreme contains a potent 10:1 extract of Maca which has been proven to actively increase sexual desire independently of testosterone levels and also contains L-Arginine which supports improved erection-quality and sex life satisfaction.
Detoxify & Re-Vitalise
With so much attention given to hormone levels, taking care of the rest of the body can sometimes be forgotten post cycle - but it remains extremely important, which is why PCT Xtreme is formulated to contain a powerful antioxidant blend that helps to cleanse and detoxify the body and liver post cycle. PCT Xtreme contains Ascorbic Acid - a form of Vitamin C - which contributes to the normal function of the immune system and also acts as an antioxidant, protecting cells from oxidative stress. The blend also includes Selenium - another powerful antioxidant - and uses Vitamin A and Cholecalciferol to further help support the immune system and overall wellbeing. Antioxidants are used as therapeutic agents to support the liver and to help cleanse it - preventing oxidative stress which causes liver damage. Vitamin B6 and Vitamin B12 are included in the blend to help reduce tiredness and fatigue complementing the detoxifying process to leave the user feeling re-energised as the body recovers post cycle.
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 Menaquinone-4 enhances testosterone production in rats and testis-derived tumor cells. 2011.
 trans-Resveratrol relaxes the corpus cavernosum ex vivo and enhances testosterone levels and sperm quality in vivo.
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 D-Aspartate, a Key Element for the Improvement of Sperm Quality. 2012.
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