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Harm-reduction information only — not medical advice. In crisis or experiencing adverse effects, contact a healthcare professional or your local emergency services immediately.

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Anabolic Steroids/Hormones Preclinical (animal) data

Boldenone Cypionate

EQ Cyp

6.9 days
Half-life
150–400 mg
Typical dose
2×/week
Frequency
10–14 weeks reported
Cycle length

Boldenone with a cypionate ester. Model inherited from testosterone cypionate — treat as approximate.

Key takeaways

  • Boldenone with a cypionate ester; no human PK data exists for this compound.
  • Plotter curve is inherited from testosterone cypionate (~6.9-day half-life), a rough stand-in.
  • Veterinary/underground only; the old human product (Parenabol) was withdrawn decades ago.
  • Community reports link boldenone to rising hematocrit; bloodwork is the only real check.
🚧 Expanded guide coming soon. This compound has PK data and a source — a full overview, mechanism, and dosing guide is pending editorial review.

Reported dosing protocols

Protocols reported in research literature and clinic/community use — informational context, not a dosing recommendation.

Use case Dose Route Frequency Duration
Performance (community) 150–400 mg IM 2× weekly 10–14 weeks

Pharmacokinetic summary

Model tier
Inherited from testosterone-cypionate
Half-life
6.9 days
Bioavailability
70%
Typical dose
150–400 mg

Harm reduction

Aromatizes
Yes
DHT derivative
No
Injection frequency
2×/week

Frequently asked questions

Is boldenone cypionate the same as Equipoise?

Same parent steroid, different ester. Equipoise is boldenone undecylenate, a much longer chain. The cypionate version releases faster and is an underground-lab product; it was never a pharmaceutical.

Does boldenone aromatize less than testosterone?

That's the standard claim, based on its lower aromatase affinity in vitro, and community bloodwork generally backs it. But no human study quantifies the difference, so the "half the estrogen of testosterone" figure repeated online is an estimate.

Is the plotter curve accurate for this one?

It's borrowed. With zero human PK data for the ester, the model inherits testosterone cypionate's 6.9-day half-life. The true curve could be meaningfully different, so treat absolute levels as rough orientation, not measurement.

References

Related articles

Equipoise (Boldenone): Lean Mass Research Guide

8 min read

Related compounds

Boldenone Undecylenate (Equipoise)

Equipoise; long half-life, slow steady gains. Notorious for long detection times.

Dihydroboldenone (DHB)

1-testosterone (DHB); potent, non-aromatizing. Limited human PK data.

Testosterone Enanthate

Long-acting testosterone ester; the most common TRT and cycle base. Reaches steady state in ~5 weeks.

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