Boldamaxx 400 (Boldenone Undecylenate 400 mg/ml)

Boldamaxx 400 (Boldenone Undecylenate 400 mg/ml) is Evolve Biolabs' double-strength equipoise injectable, supplied as a 10 ml multi-dose vial. The long undecylenate ester releases slowly, while the 400 mg/ml concentration doubles the active content of a standard boldenone vial.

What Boldamaxx 400 Is

Boldamaxx 400 is boldenone esterified with undecanoic acid, dissolved in oil at 400 mg per millilitre. Boldenone is a testosterone-derived anabolic steroid with a double bond between carbons one and two, a modification that slows its metabolism and reduces its aromatisation compared with testosterone. The undecylenate ester is long and lipophilic, forming a depot in muscle that releases hormone over weeks. A single 10 ml vial carries 4,000 mg of boldenone undecylenate.

The History of Boldenone

Boldenone was first synthesised in the late 1940s and reached clinical use in the 1950s under the Parenabol name, chiefly in Europe. It later became far better known as Equipoise, a veterinary preparation used in horses and cattle. That veterinary identity shaped its reputation: boldenone became associated with appetite, endurance and steady lean gains rather than explosive mass. The 400 mg/ml format is a modern high-concentration interpretation of that legacy.

How It Works

After intramuscular injection, esterases gradually cleave the undecylenate chain, releasing free boldenone into circulation over several weeks. Boldenone binds the androgen receptor and supports protein synthesis and nitrogen retention. It is aromatised to oestradiol to a modest degree and can be reduced by 5-alpha reductase, so its profile sits between testosterone and the drier compounds. The long ester produces stable levels but also a long washout, which matters when designing a study window.

What the Research Shows

• Boldenone has been studied extensively in equine and bovine research for weight gain and feed efficiency.
• Its long detection window in veterinary residue analysis is well documented.
• The undecylenate ester is a textbook example of slow release from an oil depot.
• Human clinical data is limited, with most evidence coming from animal and analytical work.

Research Context

High-concentration boldenone preparations raise specific formulation questions. Holding 400 mg/ml in solution requires careful choice of carrier oil and solvent, and the resulting viscosity affects how the depot disperses after injection. Analytical chemists have also studied boldenone's urinary metabolites, which remain detectable for months after undecylenate administration. Those two themes, formulation and detection, dominate the modern literature on the compound.

Strength, Pack and Authentication

Each millilitre contains 400 mg of boldenone undecylenate, giving 4,000 mg per 10 ml vial. The vial is filled under controlled conditions, sealed with a colour-coded flip-off cap and packed in a printed, tamper-evident carton stating the compound, strength and volume. A verification code on the packaging links the pack to Evolve Biolabs' manufacturing records.

Buying Boldamaxx 400 Online

Double-strength equipoise is a growing search category. If you are researching boldenone undecylenate 400, comparing high-concentration boldenone products or looking to buy Boldamaxx 400 online from a verified Evolve Biolabs supplier, this page gives you the full specification, pack size, price and live stock status. Browse more Evolve Biolabs injectables at NotNatty.