Equipoise Boldenone Undecylenate
Pharmaceutical Name: Boldenone Undecylenate
Molecular weight of base: 286.4132
Molecular weight of ester: 186.2936 (undecylic acid, 11 carbons)
Chemical structure: 1,4-androstadiene-3-one,17b-ol
Active Life: 14-16 days
Anabolic/Androgenic Ratio (Range): 100:50
Detection Time: 4-5 Months
Boldenone undecylenate is a highly anabolic and moderately androgenic steroid.
Itï¿½s primary use is in veterinary medicine most commonly with horses, but has
become a favorite of strength athletes and bodybuilders. There is very little
aromatization related to the compound with a very limited amount of water
retention experienced by most users. Another attractive quality of the
compound is the ensuing increase in appetite often reported by users when
running this steroid and will often be included in "bulking" cycles for this
purpose. Boldenone undecylenate also increases hemaglobin and hematocrit (the
number of red blood cells and the percentage of red blood cells), thus
causing greater "pumps" while working out. Although this is true of nearly all
anabolic steroids the effects are reportedly more pronounced with boldenone
undecylenate. An improvement in vascularity should also be experienced due
these increases, if body fat is at a low enough level.
Athletes other than bodybuilders or those concerned primarily with strength
may also benefit from boldenone undecylenate. This is due to the fact that the
compound stimulates the release of erythropoietin, commonly referred to as EPO,
in the kidneys. Erythropoeitin signals the body to increase the production of
erythrocytes (red blood cells). Erythrocytes are the carrier of oxygen in the
body and therefore if their concentration is increased in the body, a higher
maximal oxygen capacity is produced and performance can be improved due to a
delay in the on set of fatigue, including the build up of lactic acid. While
the results would not be overly dramatic, a user should definitely notice an
improvement all things being equal.
Use/Dosing 0f Equipoise
Due to the compounds active life, injections are usually conducted twice per
week to maintain stable blood levels although some users prefer injecting only
once per week. Most users anecdotally report that the minimum dose for most
males is between 300mg to 400mg to see any substantial effects from the drug.
Women of course will see results at much lower doses, usually ranging from
50-150mg per week for less experienced users.
Like most compounds, the majority of users prefer to stack boldenone
undecylenate with testosterone. This should negate any libido uses that a user
may encounter, as well as providing a potent combination that should result in
a dramatic increase in lean body mass. Due to the lack of liver toxicity
associated with the compound, other compounds that can raise liver values
(such as 17 alpha alkylated steroids) can be run with boldenone undecylenate
without any further complications.
Many users believe that boldenone undecylenate can be used both in "bulking"
cycles and "cutting" cycles, as the lack of water retention associated with
it's use and improvement in vascularity while on the compound can help to show
improvement in definition while a user is reducing his or her body fat. At the
same time, the compound has a profound effect on lean body mass and the
results can be dramatic when run with a diet high in protein and calories,
along with a proper training regimen.
Not considered to be a rapid mass builder in comparison to other anabolic
steroids, boldenone undecylenate will add quality lean muscle consistently
throughout a cycle. Anecdotally, users have reported that cycles of at least
ten to twelve weeks running boldenone undecylenate are needed to see the full
effects of the compound.
Risks/Side Effects of Equipoise
For the most part, problems such as gynecomastia and a high degree of
water/salt retention are nearly unheard of with this compound. Boldenone
undecylenateï¿½s rate of estrogen conversion is approximately fifty percent of
that of testosterone[2,3]. As well, since boldenone undecylenate is not
hepatoxic to any serious degree it can be used for long periods of time during
extensive cycles. Some side effects that may be experienced are acne and
increased body-hair growth, as well as the usual virilizing effects in women,
however these will likely be at a far reduced level than other compounds.
If a user does not stack the compound with testosterone they may suffer sexual
side effects, as is the case with the majority of anabolic steroids.
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, boldenone undecylenate
can speed or make the condition more pronounced. Prostate problems are also
unlikely to be experienced.
The compoundï¿½s active life is 14-16 days, however boldenone undecylenate does
produce detectable metabolites that will appear in a userï¿½s urine for several
months after administration of the drug has ceased(2). This makes the compound
less than ideal if drug testing is a concern.
1. Llewellyn, William, Anabolics 2004, 2003-4, Molecular Nutrition,
2. Aromatization of androgens to estrogens mediates increased activity of
glucose-6-phosphate dehydrogenase in rat levator ani muscle, Endocrinol 106
3. Weisberger, Ho, Activation of the Somatotropic axis by testosterone in
adult males : evidence for the role of aromatization, J Clin Endocrinol Metab,
76, 1993, 1407-12
4. MPB Reserch website,
5. Rea, Author L., 2002, Chemical Muscle Enhancement: Bodybuilderï¿½s Desk
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