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40-60 days
Anabolic steroid
Men 250-1500 mg/week
10 ml x 250mg/ml



  • Chemical name: (17β)-17-Hydroxoandrost-4-en-3-on
  • Formula: C19H28O2
  • Anabolic activity index: 100% (reference drug)
  • Androgenic activity index: 100% (reference drug)





1 vial x 10 ml x 250 mg/ml


Carrier: Grapeseed Oil


PHARMATEST U 250, also known as Testosterone Undecanoate, is a testosterone ester characterized by an exceptionally long half-life, approximately 30-36 days. Due to this prolonged half-life, Testosterone Undecanoate is effectively employed in Hormone Replacement Therapy (HRT). This compound allows for a substantial reduction in the frequency of testosterone injections, often requiring only one administration every 2-3 months. In bodybuilding, Testosterone Undecanoate serves as a foundation for extended or "eternal" cycles, enabling users to minimize injection frequency while maintaining a consistent hormonal balance. In such "eternal" cycles, injections may occur every 2-6 weeks, while for HRT, a schedule of every 2-3 months is typically sufficient.



  • Hormone Replacement Therapy (HRT): Testosterone Undecanoate is a valuable choice for HRT, as its prolonged half-life allows for infrequent injections while maintaining testosterone levels within the physiological norm.

  • Bodybuilding: In bodybuilding, this compound serves as a cornerstone for extended cycles, enabling users to maintain a steady hormonal profile with fewer injections. It is particularly useful for those seeking extended and consistent anabolic effects.

  • Sustained Release: The exceptionally long half-life of 30-36 days leads to a very slow and sustained release of testosterone, ensuring a stable and continuous presence of the hormone in the body.


Potential Side Effects:

  • Androgenic Effects: Testosterone Undecanoate may lead to androgenic side effects, including acne, hair loss, and an increased risk of benign prostatic hyperplasia (BPH).

  • Cardiovascular Effects: Users may experience fluctuations in cholesterol levels, potentially impacting cardiovascular health. Regular monitoring and heart-healthy practices are advised.

  • Suppression of Natural Testosterone: Prolonged use of exogenous testosterone, including Testosterone Undecanoate, can lead to the suppression of natural testosterone production. Post-cycle therapy (PCT) may be necessary after discontinuation.

  • Injection Site Reactions: Injection site reactions, such as pain or discomfort, are possible.


Dosage Instructions:

  • For Hormone Replacement Therapy (HRT), a typical dosage regimen involves 1000mg of Testosterone Undecanoate every 2-3 months. This is sufficient to maintain physiological testosterone levels.

  • In bodybuilding "eternal" cycles, a monthly dosage of 1500-2500 mg of Testosterone Undecanoate is common, with injections occurring every 2-6 weeks to maintain an extended anabolic effect.

  • It is important to consult with a healthcare professional before embarking on any Testosterone Undecanoate regimen to ensure it is done safely and aligns with individual health considerations.

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