What the Undecanoate Ester Does
Undecanoate is the ester attached to the testosterone molecule. Its main role is to slow release from the injection site, giving testosterone undecanoate a longer-acting profile than most other testosterone esters. Among the commonly available esters, undecanoate generally has the longest duration of action, followed by cypionate and enanthate, with propionate providing a shorter duration.
Once the ester is separated, the active hormone is testosterone. This is why undecanoate, enanthate, cypionate and propionate are different testosterone esters rather than completely different hormones.
Ester vs. Product Strength
The ester and the concentration describe different aspects of the product. The ester influences release characteristics, while the concentration states how much testosterone undecanoate is contained in each milliliter.
Dragon Pharma Undecanoate 250 mg is labeled at 250 mg/mL and supplied in a 10 mL vial. This gives a total labeled content of 2,500 mg of testosterone undecanoate per vial.
Medical and Research References
Testosterone undecanoate is used in approved prescription medicines in various countries. Official prescribing information provides useful background on the compound, including its pharmacology, approved medical uses, warnings and monitoring considerations.