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Boldenone Undecylenate

Basic Information

Common Name(s): EQ, Boldenone Undecylenate, Equipoise, Ganabol Chemical Name: 1,4-androstadiene-3-one, 17β-ol Undecylenate Class/Category: Anabolic-Androgenic Steroid (AAS)

Boldenone Undecylenate, often called “EQ” in bodybuilding circles, was originally developed for veterinary use (particularly for horses—hence the name Equipoise). Over time, it has become a staple for those looking to enhance muscle gains with fewer harsh side effects compared to some other potent steroids. Known benefits include:

  • Gradual, steady buildup of quality muscle
  • Increased appetite (helpful for hard gainers)
  • Relatively mild androgenic effects

Administration & Dosage

When people think of EQ, they usually imagine nice, consistent gains without dramatic side effects (e.g., less water retention compared to other bulking agents).

Key Points:

  • Half-life: ~14+ days (thanks to the undecylenate ester)
  • Injection frequency: Once weekly (or split into two smaller doses for even blood levels)

Dosage Recommendations:

  • Beginners: 300–400 mg per week for noticeable gains in lean muscle and strength.
  • Intermediate Users: 500–600 mg per week for more pronounced results.
  • Advanced Bodybuilders: May exceed 600 mg but at the risk of increased side effects like elevated blood pressure or anxiety.

Cycle Duration:

  • Typical cycles last 12 weeks or longer to fully capitalize on EQ’s slow buildup. I prefer usually 16 weeks minimum.
  • Patience is key: Think “tortoise over hare”—slow and steady wins the race.

Effects & Experience

Primary Intended Effects:

  • Quality Muscle Gains: Lean and consistent, not explosive.
  • Enhanced Vascularity: Prominent veins visible after a few weeks.
  • Increased Appetite: Helpful for consuming more calories (but could stress your grocery budget!)
  • Boosted Endurance and Recovery: Valued by both endurance athletes and bodybuilders.

Common Side Effects:

  • Estrogenic: Aromatizes at a lower rate than testosterone.

    • Potential for water retention or gynecomastia.
    • Keep an Aromatase Inhibitor (AI) on hand.
  • Androgenic: Possible issues include:

    • Oily skin, acne, hair growth, or hair loss (if genetically predisposed).
  • Increased Blood Pressure: Particularly at higher doses.

  • Mood Changes: Reports of anxiety or feeling edgy.


Time Course of Effects:

  • Onset: Noticeable changes often take 4–6 weeks due to the long ester.
  • Peak Gains: Become evident around weeks 6–10.
  • Duration: Stays active for weeks post-injection (14-day half-life).
  • After Effects: Without Post Cycle Therapy (PCT), recovery could be slow.

Common Stacks

  • Boldenone + Testosterone: Classic combo for balanced bulking or lean-gain cycles.
  • EQ + Winstrol: For a hardened, lean look (watch liver health with orals).
  • EQ + Trenbolone: Advanced stack with powerful synergy but higher risks.
  • EQ + Deca: Less common due to prolonged suppression risks, but some users report synergy.

Safety & Risk Management

Major Risk Factors:

  • Blood Pressure & Hematocrit:

    • EQ raises red blood cell count. Regular bloodwork is essential.
    • Donate blood if hematocrit levels climb too high.
  • Estrogenic Effects:

    • Use an AI if needed—act early to prevent issues like gynecomastia.
  • Androgenic Issues:

    • Be cautious if prone to hair loss or severe acne.
  • Hepatotoxicity:

    • Generally mild with EQ alone. Add liver support if stacking with orals.

Warning Signs:

  • Rapid spikes in blood pressure
  • Persistent headaches
  • Unmanageable anxiety
  • Elevated RBC count

Post Cycle Therapy (PCT):

  • Start PCT 3–4 weeks post-last injection due to EQ’s long half-life.
  • Use SERMs like Nolvadex or Clomid to restore natural testosterone.

Boldenone Undecylenate (EQ) can be a solid choice for those seeking moderate, steady gains with relatively low side-effect risks. Success depends on:

  • Consistent training and diet (to leverage the increased appetite).
  • Monitoring blood levels and side effects.
  • Respecting the slow, steady nature of EQ.