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Boldenone Undecylenate (250mg/ml)


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  • Active ingredient: Boldenone Undecylenate
  • Type: Anabolic steroid (DHT derivative)
  • Form: Injectable


Boldenone Undecylenate is a testosterone derivative and an anabolic steroid. It is primarily used to promote the development of high-quality muscle mass and enhance strength. The compound is often employed during cutting phases to improve body definition, increase vascularity, boost energy levels, and enhance overall well-being.

Initially developed for veterinary use to increase muscle mass in animals, further research led to its recommendation for human use. Boldenone Undecylenate features a unique molecular structure with a double bond between its first carbon atoms. This structural modification significantly reduces the risk of side effects while maintaining its anabolic potency.

Unlike other steroids, Boldenone Undecylenate exhibits minimal estrogenic and progestogenic activity, making it a favorable choice for individuals with prostate conditions. It is non-toxic to the liver and does not cause estrogen-related side effects. The compound has gained positive reviews due to its balanced androgenic and anabolic properties.

The elimination half-life of Boldenone Undecylenate is approximately two weeks, allowing for less frequent administration. It can remain detectable in the body for up to six months following the last dose.

While the drug provides muscle hardness, improved vascularity, and an increase in appetite, it is important to note that it can thicken the blood, potentially leading to cardiovascular complications and thrombosis.

Boldenone Undecylenate is commonly used in conjunction with testosterone during anabolic steroid cycles. It acts as both an anabolic agent and a mild aromatase inhibitor, contributing to an optimal hormonal balance.

Recommended Use to Reduce Estradiol:

Boldenone Undecylenate is not only valued for its anabolic properties but also for its ability to reduce estradiol levels during a cycle. It can effectively decrease estrogen while providing anabolic benefits.

Professional athletes often administer boldenone doses ranging from 800-1200 mg, which may surprise those new to its usage.

For optimal results, boldenone is typically combined with testosterone. It is not recommended to rely solely on boldenone as the primary component of a cycle. Including testosterone is essential to maintain balanced estradiol levels, as excessively low estradiol can lead to adverse effects such as decreased libido, mood disturbances, and osteoporosis.

Individual dosage ratios of boldenone to testosterone should be determined based on personal needs and response. Starting with a ratio of 2 parts testosterone to 1 part boldenone is often recommended.


  • Frequency of Injections: Every 7-10 days
  • Half-life: 10-14 days

Pharmaceutical Form:

Injectable oily solution


  • Pregnancy
  • Known or suspected carcinoma of the prostate or breast
  • Breast-feeding
  • Hypersensitivity to the active substance or any of the excipients

Storage Instructions:

  • Keep away from children
  • Store in a cool, dry place away from direct sunlight
  • Store at temperatures between 8°C and 30°C
  • Do not freeze
  • Protect from light
  • Do not use after the expiry date