hormoneInjectableControlled
Boldenone Undecylenate
Also known as: Equipoise, EQ
Half-life
336 h
Typical timing
any
Food rule
either
Default unit
mg
Studied for
Overview
Boldenone Undecylenate, often known by its trade name Equipoise or its common abbreviation EQ, is a synthetic anabolic androgenic steroid (AAS) derived from testosterone. It is structurally similar to testosterone but with a double bond at the 1-position. This structural modification is intended to reduce its androgenic effects while retaining anabolic properties. Boldenone Undecylenate is the undecylenate ester of boldenone, which means a long ester chain is attached to prolong its release and activity in the body after injection. In veterinary medicine, it has been used to promote lean muscle mass, appetite, and red blood cell production in horses and other animals. In human contexts, though not approved for human use by regulatory bodies like the U.S. Food and Drug Administration (FDA), it is sometimes used illicitly for performance enhancement, particularly in bodybuilding and athletics, with the aim of increasing muscle mass, strength, and endurance. Due to its long ester, Boldenone Undecylenate has a prolonged release profile, leading to sustained blood levels and requiring less frequent injections compared to shorter-esterified compounds. The effects are generally considered to be slower and more gradual compared to some other anabolic steroids, often leading to more qualitative and sustainable gains in muscle mass over extended periods rather than rapid, dramatic increases in weight. The use of this compound carries significant health risks and is restricted, being a Schedule III controlled substance in the United States due to its potential for abuse and adverse effects. This information is derived from sources like DrugBank and relevant regulatory guidelines. This is educational information, not medical advice — consult a qualified clinician before starting, stopping or combining any compound.
Deep dive
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Known interactions
- Category rule: peptide × hormoneNote
Injectable peptides plus hormones can have overlapping or compounding effects that aren't always well characterized.
Track bloodwork with a provider; don't assume combinations are neutral.
Frequently asked
Sources referenced
- DrugBank
- MedlinePlus
- NIH Office of Dietary Supplements (general anabolic steroid information, not specific to boldenone)
- Anti-Doping Agency guidelines (general information on banned substances)
- Veterinary FDA labels (for approved animal uses)
Stackwise compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician.
Related compounds
Others in the hormone category or studied for the same goals.
Related benefits
Other compounds studied for the same benefits as Boldenone Undecylenate.
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