Testosterone Undecanoate


Contains per ml
Testosterone Undecanoate
10 x 1ml Amps


Testosterone undecanoate is an androgen and anabolic steroid (AAS) medication which is used mainly in the treatment of low testosterone levels in men due to its very long acting ester / half life. It is injected into the muscle once every 7 to 14 days, depending on individual response.

Testosterone undecanoate was introduced in the 1970s. It became available for use by injection in Europe in the early to mid 2000s and in the United States in 2014. Along with testosterone enanthatetestosterone cypionate, and testosterone propionate, testosterone undecanoate is one of the most widely used testosterone esters. However, it has advantages over other testosterone esters in that it has a far longer duration when given by injection. In addition to its medical use, testosterone undecanoate is used to improve physique and performance. The drug is a controlled substance in many countries and so non-medical use is generally illicit.


300mg/ml Testosterone Undecanoate U.S.P. (10 1ml Ampoules)

Chemical names

[(8R,9S,10R,13S,14S,17S)-10,13-dimethyl-3-oxo-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl] undecanoate

Side effects

testosterone undecanoate include symptoms of masculinization like acne, increased hair growth, voice changes, hypertension, elevated liver enzymes, hypertiglyceridemia, and increased sexual desire. The drug is a prodrug of testosterone, the biological ligand of the androgen receptor (AR) and hence is an androgen and anabolic steroid. It has strong androgenic effects and moderate anabolic effects, which make it useful for producing masculinization and suitable for androgen replacement therapy. Testosterone undecanoate is a testosterone ester and a prodrug of testosterone in the body. Because of this, it is considered to be a natural and bioidentical form of testosterone.

Dosage & Stacking

1ml 300mg/ per week , maximum 2 injections

can be stacked very well with DianabolDeca for serious mass bulking cycles. this would not be used for cutting cycles