Boldenone

a veterinary boldenone undecylenate horse drug with measured equine oil-depot PK, a small human oral metabolism study of the free parent, and no controlled human therapeutic program.

tier F · androgens · 123 h median horse terminal half-life, animal-only

verdict

the horse depot curve is real and useful as animal evidence, but the human treatment file is absent and cannot be reconstructed from urinary metabolites or veterinary labeling.

if you are asking what Equipoise is — the authorized veterinary product is boldenone undecylenate in an oil injection for horses not intended for food. it is not a human medicine.

if you are asking what 123 hours means — it is the median apparent terminal half-life in seven horses after 1.1 mg/kg intramuscular boldenone undecylenate in sesame oil. the observed range was 109.2 to 265.1 hours.

if you are asking whether humans have ever received boldenone — a metabolism study gave three men and three women a single 30 mg oral dose of free boldenone. it measured urinary metabolites, not therapeutic efficacy or plasma half-life.

The animal curve belongs to undecylenate, sesame oil, intramuscular administration, and horses. No allometric conversion is made.

why F-tier

F tier reflects veterinary-only current authorization, no controlled human therapeutic outcome or safety program, and major product-quality uncertainty. A rigorous animal PK study does not lift the human evidence grade.

the core tension

Boldenone's exact equine depot PK is better measured than most underground claims, yet it remains a horse curve around a veterinary product with no human therapeutic evidence or safety margin.

what it is

Boldenone is a delta-1 testosterone analog. The US veterinary product uses the long undecylenate ester in sesame oil for intramuscular administration to horses. Free oral boldenone used in a human metabolism experiment is not the same formulation.

what it does

After ester hydrolysis, boldenone activates the androgen receptor. Its delta-1, delta-4, 3-keto structure is chemically capable of aromatization, but the rate and clinical significance in humans have not been quantified.

origin

US regulation authorizes boldenone undecylenate for horses at a veterinary dose and excludes horses intended for food. No approved human product record was located.

why researchers are interested

The long equine depot and veterinary anabolic effect drive underground use. Neither establishes a human half-life, a clean hematologic or cardiovascular profile, or safety of products made outside an approved veterinary supply chain.

does it work

The veterinary use and animal studies establish anabolic and endocrine activity. There is no controlled human therapeutic or performance trial. F tier reflects the human-evidence and product-safety failure, not a potency judgment.

claims vs the data

• boldenone has a 14-day human half-life — unsupported — the located quantitative PK is equine and highly variable.
• Equipoise is a human medicine — contradicted — the US authorization is veterinary for horses not intended for food.
• urinary detection proves depot clearance — contradicted — metabolite detection after oral free parent is not plasma PK for intramuscular undecylenate.

key facts

• molecular formula: C30H44O3 (boldenone undecylenate)
• molecular weight: 452.68 g/mol
• amino acids: n/a (steroidal small molecule, not a peptide)
• half-life: median 123 hours in horses after intramuscular undecylenate; no measured human depot half-life
• type: delta-1 anabolic-androgenic steroid administered as veterinary intramuscular boldenone undecylenate in oil
• CAS: 13103-34-9
• 123 h median equine terminal half-life
• 109 to 265 h equine terminal range
• 7 horses in the PK study
• 0 controlled human therapeutic trials

frequently asked questions

Is boldenone approved for people?

No approved human product was located. US authorization is veterinary and restricted to horses not intended for food.

What does the 123-hour half-life represent?

It is a median apparent terminal value from seven horses given intramuscular boldenone undecylenate in sesame oil. It is not a human value and the horse range extended to 265.1 hours.

Why not convert the horse number to people?

Depot release depends on species, muscle, ester, oil vehicle, injection volume, and site. No defensible numerical animal-to-human conversion was located or performed.

Did a human study prove a half-life?

No. A six-person study identified urinary metabolites after oral free boldenone. Detection and metabolism do not provide plasma terminal half-life for intramuscular undecylenate.

related peptides

• Trenbolone — another current veterinary anabolic without modern human therapeutic PK
• Nandrolone — a long-ester androgen with human depot PK
• testosterone — the clinically characterized aromatizable androgen comparator

reptides grades the research record and cites the literature behind every call. research reference only; not medical advice.