Boldenone (1,4-androstadiene-3-one-17β-ol, available as the undecylenate ester) is an anabolic steroid developed for veterinary use, mostly for treatment of horses. It is not indicated for use in humans in the US and is only available through veterinary clinics.
The activity of boldenone is mainly anabolic, with a low androgenic potency. It has a very long half-life, with minimal blood levels present up to 8 weeks after discontinued use.
Boldenone will increase nitrogen retention, protein synthesis, increases appetite and stimulates the release of erythropoietin in the kidneys. The drug is commonly used in doping within bodybuilding. If intended to assist in bodybuilding, the drug is taken as part of a steroid stack of other anabolic steroids, usually with a potent androgen like testosterone as the ‘base’ of the stack.
Boldenone has a low rate of aromatization (about 50% of Testosterone), which means it does not convert to estrogen easily and does not cause very much water retention. Many Bodybuilders will find that it is a good replacement drug for Nandrolone.
It is a poor drug of choice for any athlete who will be subject to a blood test due to its long metabolic half-life. Trace amounts of the drug can easily be detected for months after discontinued use.
A user's lipid profile will be negatively affected, as with any steroid, but not to the same degree as with a strong androgen. Boldenone undecylenate can convert to DHN (a very mild androgen in comparison to DHT) via 5- alpha reductase, however only a small amount will actually be converted meaning that the compound it is not hard on the hair line[4,5]. However, like most other compounds if you are prone to male pattern baldness, Equipoise can speed or make the condition more pronounced. Prostate problems are also unlikely to be experienced.
The side effects of Boldenone Undecylenate are very mild and are visible only when taken in high doses and for a very long period. Among these symptoms we may encounter nausea, leukopenia, symptoms resembling a peptic ulcer, acne, oily skin, hair loss, diarrhea, hypertension, prolonged blood clotting time, increase in libido. Women find Boldenone Undecylenate quite comfortable; virilization symptoms are usually insignificant when taken at low doses. However for more sensible female athletes there are some side effects as: menstrual irregularities, post-menopausal bleeding, increased sex drive, swelling of the breasts, hoarseness or deepening of the voice, and enlargement of the clitoris.