Bolde250 by Genesis
- Effective substance: boldenone undecylenate,
- Content: 250mg/ml
- Vial with: 10ml
- Known as: Equipoise, Parenabol, bolde
Boldenone Undecylenate (Equipoise)
Boldenone undecylenate is a synthetic derivative of testosterone, primarily used in veterinary medicine. It is classified as an anabolic-androgenic steroid (AAS) known for its prolonged duration of action due to the attached undecylenate ester.
Structural Characteristics
Boldenone is structurally identical to testosterone, with the addition of a double bond between the and positions. This structural modification reduces the rate of aromatization compared to testosterone. The undecylenate ester chain provides a slow, steady release of the hormone into the bloodstream, typically requiring injections every 3 to 4 weeks in veterinary applications.
Side Effects
1. Estrogenic Effects While aromatization occurs, the rate is relatively low. Estrogenic side effects—such as water retention, increased body fat, or gynecomastia—are generally dose-dependent and typically manifest at dosages exceeding 200–400 mg per week.
- Management: SERMs (Selective Estrogen Receptor Modulators) like Clomid or tamoxifen are often utilized to mitigate these risks.
2. Androgenic Effects Even at moderate anabolic levels, androgenic activity persists. Common symptoms include: - Oily skin
- Acne
- Increased growth of facial or body hair
3. Liver Toxicity Boldenone is generally considered to have a low risk of hepatotoxicity, as it does not possess the -alkylated structure commonly associated with oral steroid liver strain.
Structural Characteristics of Boldenone
Boldenone is a synthetic derivative of testosterone characterized by specific modifications to its chemical structure:
- 1,4-diene modification: The base structure of boldenone is identical to testosterone, with the significant addition of a double bond between the and positions. This specific alteration creates a molecule that is less prone to aromatization, resulting in lower estrogenic activity compared to testosterone.
- The Undecylenate Ester: The molecule is esterified with undecylenic acid at the -hydroxyl group. The length of this carbon chain (which is one carbon longer than the decanoate ester) determines the drug's solubility and release rate.
- Release Profile: The undecylenate ester is highly lipophilic, causing the compound to slowly diffuse from the oil-based injection site into the bloodstream. This creates a "spike" in hormone levels shortly after administration, followed by a steady, sustained release that remains elevated for approximately 21–28 days.
- Non-alkylated status: Unlike many oral anabolic steroids, boldenone does not feature a -alkyl group. Consequently, it does not exert significant stress on the liver, as it does not require the same metabolic pathways for systemic activation or inactivation that typically result in hepatotoxicity.

