Decabol 250 (Nandrolone Decanoate 250 mg/ml)

Decabol 250 (Nandrolone Decanoate 250 mg/ml) is Evolve Biolabs' classic Deca Durabolin injection, supplied as a 10 ml multi-dose vial. The long decanoate ester provides slow, steady release at the standard 250 mg/ml concentration.

What Decabol 250 Is

Nandrolone decanoate is nandrolone esterified with decanoic acid, a ten-carbon chain that makes the molecule highly lipophilic and slow to clear. Nandrolone itself is a 19-nortestosterone derivative, lacking the carbon-19 methyl group of testosterone, which changes its metabolism and reduces its aromatisation. The decanoate ester extends release over weeks. Decabol 250 provides 250 mg per millilitre in a 10 ml vial, for 2,500 mg total.

The History of Deca-Durabolin

Nandrolone was first synthesised in the 1950s, and the decanoate ester was introduced by Organon in the early 1960s as Deca-Durabolin. It became one of the most widely used anabolic steroids in clinical medicine, studied for osteoporosis, wasting and anaemia. Its long action made it attractive where infrequent administration was important, and it remains a reference compound in both clinical and analytical research.

How It Works

After intramuscular injection, esterases slowly cleave the decanoate chain, releasing free nandrolone over roughly two to three weeks. Nandrolone binds the androgen receptor and promotes protein synthesis and nitrogen retention. It is aromatised to oestradiol to a modest degree and can be reduced by 5-alpha reductase to a less potent metabolite, which helps explain its relatively low androgenic profile. It is metabolised in the liver and excreted mainly in urine.

What the Research Shows

• Nandrolone decanoate has been studied in HIV-associated wasting and osteoporosis.
• Trials report increases in lean body mass and bone mineral density.
• Its long detection window is well documented in anti-doping research.
• The 19-nor structure and its metabolic consequences are well characterised.

Research Context

Nandrolone decanoate has one of the richest clinical evidence bases of any anabolic steroid. Trials in HIV-associated wasting showed increases in lean body mass, and studies in osteoporosis reported improvements in bone mineral density. Research has also examined its effects on joint discomfort, although the mechanism is not fully understood. On the analytical side, nandrolone metabolites remain detectable for months after a single injection, making it a common target in doping control.

Strength, Pack and Authentication

Each millilitre contains 250 mg of nandrolone decanoate, for 2,500 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 Decabol 250 Online

Deca Durabolin remains one of the most searched injectables in the world. If you are researching nandrolone decanoate, comparing 250 mg Deca products or looking to buy Decabol 250 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.