Pharmaceutical Name: Testosterone (aqueous suspension)
Chemical structure: 4-androstene-3-one,17beta-ol
Molecular weight of base: 288.429
Anabolic/Androgenic Ratio: 100/100
Active Life: less than 24 hours
Testosterone suspension is gram for gram is the most powerful testosterone
available. Suspension is not only non-esterified, its not even dissolved in
oil the way esterified compounds are. It is an aqueous (water) suspension.
Where 100 mg of a testosterone ester equals 100 mg minus the weight of the
ester, 100 mg of testosterone suspension contains an actual 100 mg of the
However, the primary advantage of an individual choosing to use testosterone
suspension in their cycle over another type of testosterone is that the
anabolic effect of this testosterone will be realized much more quickly than
could ever be expected with an esterified compound. The active life of
suspension is such that it will only be active in a user's system for less
than 24 hours replacing all natural testosterone production, along with the
added amount that an anabolic steroid user desires. Obviously this should be
huge increase over the endogenous testosterone level of the average male,
which can range from 2.5 to 11 mg per day in nearly all cases (2,3).
By running suspension, users should feel the effects of the compound within
days of first administration of the drug. Strength and size increases, along
with possible negative side effects, should be noticeable quite quickly. The
rapid onset of side effects is also one of the reasons why the compound is
usually used only by those that have plenty of experience with anabolic
Due to the fact that the active life of suspension is less than 24 hours, the
majority of users will inject twice per day. However, anecdotally users have
found that daily or even injections every other day, along with other
esterified testosterone compounds, have resulted in gains in mass while not
resulting in a dramatic increase in the negative side effects related to the
drug. However despite this, to maintain moderately consistent blood levels of
the compound it should be administered twice per day.
Like all testosterone compounds, dosages vary depending on the needs and
experience of the individual user. Large doses may be uncomfortable for some
as many users have complained of "knotting" in areas that are injected into.
However, due to the frequent injection schedule only those users that are
administering extremely large doses will have to endure this for the most
part, although there are anecdotal reports of muscle knotting occurring even
at relatively small doses.
Since suspension by it's very nature is a water-based compound, many of those
who use it complain of some problems regarding needle clogging when both
drawing the compound from the vial as well as during the actual injection.
This of course is dependent on the type and/or brand of suspension an
individual is using, with some being easier to draw and inject than others.
However for those that have difficulty, they may find it necessary to use a
larger gauge of needle than with some other compounds. This should alleviate
these problems for the most part.
Since testosterone suspension is indeed simply another form of injectable
testosterone, the side effects associated with it are for the most part those
commonly encountered with any type of testosterone compound. For more specific
information about these see the testosterone enanthate profile in this forum.
In this section the side effects, and the characteristics of them, that are
unique to testosterone suspension alone will be dealt with.
Testosterone is, next to nandrolone, the most suppressive drug of natural
testosterone production (4). Side effects may be a little more pronounced with
suspension than with testosterone esters due to the speed with which the
compound's effects are realized. This includes the fact that endogenous
testosterone production will be quickly reduced and shut down when using
suspension. This can often reach the point of severe testicular atrophy, even
in those individuals that see little to no atrophy when running other
compounds, including other forms of testosterone. This often necessitates the
use of human chorionic gonadotropin (HCG) to avoid harsher than necessary
Like all testosterones, androgenic side effects will also become evident with
use of suspension. Since testosterone converts to DHT one should expect to
possibly endure oily skin, acne, and body and/or facial hair growth, along
with exasperating male pattern baldness if a predisposition exists (3). Again,
some users anecdotally report that these effects are often more pronounced
with suspension than with any other type of testosterone and they will likely
appear much more rapidly than with other compounds due to the lack of an
Even those women who run low doses of testosterone will likely find it
unnecessary to venture into attempting a cycle of testosterone suspension. Due
to the frequent injection schedule that the compound requires, and the low
doses that most women run when cycling testosterone, it become
counterproductive to be shooting such a small amount of a compound so
frequently when other more convenient drugs are available. However, if a
female does attempt to run testosterone suspension, the usual virilizing side
effects would be expected (as discussed in the testosterone enanthate/cypionate
profile else where in this forum).
1. Llewellyn, William, Anabolics 2004, 2003-4, Molecular
Nutrition, pp. 163-5
2. Schulte-Beerbuhl M., Nieschlag E., Comparison of testosterone,
dihydrotestosterone, luteinizing hormone, and follicle-stimulating hormone in
serum after injection of testosterone enthanate or testosterone cypionate.
Fertility and Sterility 33 (1980) 201-3.
3. Cantrill JA, Dewis P, Large DM et al. Which testosterone replacement
therapy? Clin Endocrinol (oxf) 21 (1984) 97-107
4. Toth M., Zakar, T. Relative binding affinities of testosterone,
19-nortestosterone and their 5-alpha reduced derivatives to the androgen
receptor and to other androgen-binding proteins: A suggested role of
5alpha-reductive steroid metabolism in the dissociation of "myotropic" and
"androgenic" activities of 19-nortestosterone. J Steroid Biochem 17 (1982)
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