# Boldenone Cypionate

*Also known as: EQ Cyp*

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

## Overview

Boldenone cypionate is an injectable ester of boldenone, the same parent compound as Equipoise, paired with the medium-long cypionate ester for a slower release than the undecylenate form. The boldenone parent is a testosterone analog with reduced androgenic and estrogenic character, and the cypionate ester is cleaved by tissue esterases to release free boldenone over roughly a week per injection. The compound has an inherited roughly 166-hour half-life modeled on testosterone cypionate rather than dedicated human data, about 70% bioavailability, and supports twice-weekly dosing. Effects include lean mass accrual with less water retention and lower estrogenic drive than testosterone, while the long half-life and slow clearance extend detection substantially and the parent compound raises hematocrit over time. Harm reduction centers on understanding that the pharmacokinetic model is inherited and approximate and on monitoring hematocrit, lipids, and estradiol given the long tail and cumulative red-cell effect.

## Pharmacokinetics

- **Model tier:** inherited
- **Half-life:** 6.9 days (165.60000000000002 hours)
- **Bioavailability:** 70%

## Dosing

- **Default dose:** 200 mg
- **Typical range:** 150–400 mg
- **Units:** ng/dL

## Harm reduction

- **Aromatizes:** Yes
- **DHT derivative:** No
- **Injection frequency:** 2×/week

## Source

- **Label:** Inherited from Testosterone Cypionate
- **URL:** https://tau.amegroups.org/article/view/11328/13164
- **Notes:** No direct PK data; model inherited from Testosterone Cypionate.

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**Canonical URL:** https://anabolicdex.com/compounds/boldenone-cypionate
**Plot:** https://anabolicdex.com/plot?compound=boldenone-cypionate