• New

Boldelad 250 mg/ml (Boldenone Undecylenate) 10ml vial

No tax
  • Stock: In Stock

  • Type: VIAL

Active substance: Boldenone Undecylenate

Type: anabolic steroid (Testosterone derivative)

Form: Injections

Carrier oil: Sesame oil

In Stock

  Security policy

Anonymous packaging (cosmetic company)

  Delivery policy

Delivery time to EU 5 - 10 business days. Delivery time to US 7 - 14 business days.


Boldenone is a testosterone derivative classified as an anabolic steroid. Its primary effects include promoting the development of high-quality muscle mass and enhancing strength. Additionally, it aids in improving body definition when combined with cutting techniques, increases vascularity, boosts energy levels, enhances well-being, and improves self-esteem.

Originally developed to stimulate muscle growth in animals and used exclusively in veterinary medicine, Boldenone was later studied and recommended for human use. Its chemical structure includes a double bond between the first carbon atoms, significantly reducing the risk of side effects and limiting their variety.

Boldenone is well-regarded due to its androgenic index being twice as low as testosterone, while maintaining an anabolic index of one hundred. It lacks estrogenic and progestogenic activity, making it non-toxic to the liver, a crucial benefit.

This drug is metabolized and eliminated by the kidneys, with a half-life of approximately two weeks. It can be detected in the body for nearly six months after the last dose, as Boldenone molecules may take up to four months (in some cases, even ten months) to be fully eliminated.

Beyond muscle strengthening and enhancing vascularity, Boldenone improves appetite and increases red blood cell count. It stimulates the release of erythropoietin in the kidneys, leading to improved oxygen supply to tissues. However, it can also cause blood thickening, potentially resulting in thrombosis and cardiovascular issues.

Boldenone does not undergo aromatization or activate estrogen receptors. It exhibits fewer androgenic properties compared to other steroids, making it suitable for individuals with prostate conditions. Furthermore, it serves as an anabolic and mild aromatase inhibitor in testosterone cycles. For those who do not experience significant aromatization, Boldenone can effectively replace the need for anastrozole.

Note: Boldenone is only available in undecylated esters.

Utilization for Estradiol Reduction

Boldenone is recognized for its exclusive anabolic properties and is a valuable tool for reducing estradiol levels during a cycle. Besides increasing appetite and promoting vascularity, Boldenone can decrease estradiol, a female sex hormone. Professional athletes often administer Boldenone in dosages ranging from 800 to 1200 mg during steroid cycles, which can be surprising to novice athletes.

As an anabolic agent, Boldenone requires relatively high dosages for effectiveness. For those not engaged in intense weightlifting, a dosage of 250 mg is unlikely to yield noticeable results, especially during the first cycle. Athletes who used Boldenone as a standalone drug reported feeling significantly off-track after four weeks, with below-normal estradiol levels.

Key Takeaway: Boldenone should only be used as an adjunctive component in a cycle, rather than its foundation. Testosterone must be included in the cycle to prevent a drastic decrease in estradiol levels, which can adversely affect health. Boldenone should be combined with testosterone to maintain an appropriate level of estradiol, which Boldenone naturally lowers.

Failure to do so may result in excessively low estradiol levels, leading to decreased libido, osteoporosis, mood deterioration, and other related consequences. The optimal ratio of Boldenone to testosterone should be determined individually. A recommended starting ratio is 2 parts testosterone to 1 part Boldenone.

Several days after administering a Boldenone injection, it is advisable to check estradiol levels in the blood. If estradiol remains high, consider increasing the Boldenone dosage. Often, maintaining a 1:1 ratio of Boldenone to testosterone can keep estradiol within the mid-range of reference values.


Injection frequency: Every 7-10 days
Half-life: 10-14 days

Pharmaceutical Form

Oily solution for intramuscular injection


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

Storage Instructions

  • Do not use after the expiration date
  • Store between 8 and 30 degrees Celsius
  • Do not freeze
  • Protect from light