Nandrolone Decanoate
Nandrolone on the long decanoate ester, supplied at 300 mg/ml, the highest concentration of any preparation on this site. This is the compound usually meant by Deca.
- Compound
- Nandrolone
- Ester
- Decanoate
- Concentration
- 300 mg/ml
- Vial size
- Not published
- Total compound
- Not published
- Half-life
- Approximately 7.5 days
- Progestogenic
- Yes
- Storage
- Room temperature, protected from light
Measured content
Where this one sits
The decanoate is the most concentrated preparation stocked anywhere on this site at 300 mg/ml, double the NPP. It is also the one with the longest tail in the family, at roughly seven and a half days against a day and a half for the phenylpropionate. The name Deca comes from Deca-Durabolin, the original brand, which is why the shorthand persists decades after that product.
Why this one
The decanoate ester gives the longest curve in the family at roughly 7.5 days, and at 300 mg/ml it is also the most concentrated preparation stocked. The long ester matters most at the end of a run rather than the start, because it continues releasing well after the last injection.
For what nandrolone is as a compound, see the Nandrolone reference, and for the structure it shares with the other family member see what a 19-nor is.
- Quanta Pharma Nandrolone Decanoateout of stock£42
Availability checked 2026-09-01. The product page carries live stock.
Common questions
Is Deca the same as nandrolone decanoate?
Yes. Deca is the common abbreviation for nandrolone decanoate, taken from the original Deca-Durabolin brand.
Why is the decanoate supplied at 300 mg/ml?
Long esters are more soluble in oil at higher concentrations, which is why the decanoate is stocked at 300 mg/ml against 150 for the phenylpropionate.
Why is Deca supplied at 300 mg/ml when NPP is 150?
Long esters dissolve in oil at higher concentrations more readily, so the decanoate is stocked at double the concentration of the phenylpropionate. It is the most concentrated preparation on this site.
How is Nandrolone Decanoate stored?
Room temperature, protected from light.
Does this page give dosing information?
No. This page covers the ester, the concentration, measured content and storage only. It does not provide dosing protocols, cycle design or administration schedules.