Equipoise 300mg/mL | 10-Vial Kit
Boldenone Undecylenate · EQ · ~14 day t½
QSC Peptides · 100:50 ratio
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≥99% Pure · COA
Equipoise (Boldenone Undecylenate / EQ) is the Δ1 analog of testosterone with a unique pharmacological profile: 100:50 anabolic:androgenic ratio, slow aromatization to estradiol (~50% of testosterone), and the longest half-life of common injectable AAS (~14 days) due to the undecylenate ester. QSC Peptides offers 300mg/mL — ≥99% purity, free USA shipping.
Equipoise (Boldenone Undecylenate) is the Δ1 analog of testosterone — a single additional double bond between C1 and C2 produces a compound with substantially different pharmacological properties despite structural similarity.
The Δ1 modification reduces 5α-reductase susceptibility (boldenone reduces to 5α-dihydroboldenone rather than DHT, with intermediate AR affinity) and reduces aromatization rate by ~50% vs testosterone — producing a gradual, lower-level estradiol increase. The 100:50 ratio indicates equivalent anabolic potency to testosterone with half the androgenic activity.
The undecylenate ester (C11, the longest common AAS ester) produces the slowest release pharmacokinetics of any common injectable AAS — ~14 day half-life, very slow Cmax, and prolonged AUC. This makes EQ uniquely suited for long-duration research models requiring extremely stable steroid levels with minimal injection frequency.
Boldenone has been associated with EPO stimulation and erythrocytosis in research — greater than testosterone at equivalent doses. This may involve direct renal effects distinct from the AR-mediated EPO pathway, making EQ a compound of interest in erythropoiesis research.
Research-grade · ≥99% purity · COA · Free USA USPS/FedEx · US domestic warehouse
QSC Peptides · 100:50 ratio