Product Name:1-Testosterone,Dihydroboldenone
Alias:DHB,1-testosterone cypionate
CAS NO.:65-06-5
Molecular Formular:C19H28O2
Molecular Weight:288.42
Grade:Pharmaceutical Grade
Appearance:White Crystalline Powder
Anabolic /Androgenic Ratio: 200/100

5a reduced form Structure

1-Testosterone is also known as dihydroboldenone and 1-dehydroandrostanolone. 1-Testosterone is the 5a reduced form of boldenone (Equipoise). 1-Testosterone was the first fully active steroid introduced to the dietary supplement market.

This lack of 5alpha reduction with the compound allows users to administer it without suffering the negative side effects associated with this chemical reaction but also eliminates the benefits as well. Boldenone is not the only steroid that shares similarities with dihydroboldenone. In fact dihydroboldenone is chemically identical to the drug methenolone except for the 1-methylation that is apart of methenolone . 1-methylation was of course added to methenolone to make it more available when taken orally and thus dihydroboldenone is not efficiently utilized when administered orally, although it was once sold over the counter in tablet and pill form. Some of these over the counter preparations of the drug were done utilizing a delivery system similar to Andriol , i.e. producing an oil-solubilized product with dihydroboldenone. This would still not be a relatively worthwhile system of delivery to use however if one wanted to maximize the potential of the compound. Intramuscular injection is by far the most efficient method of administration to use as with most anabolic steroids.

As mentioned above, dihydroboldenone is structurally similar to methenolone and boldenone and less so to testosterone despite the commonly used name for it, 1-testosterone. For this reason some female athletes may be inclined to use the drug as well. The potential for development of symptoms of virilization still remain but are not as severe as with synthetic testosterone or other harsher drugs. This is not to say however that dihydroboldenone is a mild drug. To simplify the explanation of exactly what the drug is, it is to boldenone as dihydrotestosterone (DHT) is to testosterone. This would explain why the effects of the drug, both positive and negative, are so dissimilar to those of boldenone. Like testosterone and dihydrotestosterone, a portion of the boldenone that a user administers converts to dihydroboldenone. Also similarly, dihydroboldenone like dihydrotestosterone does not convert to anything else past that compound.

Favorable anabolic to androgenic Ratio

1-Testosterone has an anabolic to androgenic ratio of 200/100. With 1-testosterone, many users report a hardening effect and an increase in vascularity. 1-testosterone appears to be best used for size gains, although it should still provide the user with strength gains as well. In effect, 1-testosterone has been compared to Primobolan and Equipoise, though overall it is a much more potent compound mg for mg. 1-testosterone is considered a “dry” compound which can be used during cutting phases yet because of its strength is can also be useful during a bulking phase.

With its favorable anabolic to androgenic ratio, the low doses needed to see results, and the fact that 1-testosterone is already 5a reduced, androgenic side effects should not be too high with this compound in comparison to other steroids like testosterone. 1-testosterone cannot convert to estrogen, so the user should not experience bloating while on cycle and the risk of developing gynecomastia is low when 1-testosterone is used alone. One side effect commonly experienced by 1-testosterone users is lethargy. The exact reason for this lethargy is unknown, but it may be due to the fact that 1-testosterone lacks the energy and libido boosting effects of testosterone yet is still suppressive of natural testosterone production, or because of low estrogen levels. Stacking 1-testosterone with a more androgenic compound during a cut or a “wet” compound during a bulk does appear to relieve the issue of lethargy in most users.

1-Testosterone Cypionate

Indeed dihydroboldenone is available in numerous different esters. Cypionate , Ethyl Carbonate, Propyl Carbonate, and Propionate , among others, are all available for use with the drug. As always each does not offer any real advantages over one another other then the obvious differing active lives that each presents and the amount of time that it takes for the body to completely eliminate the drug from it . For the most part users will want to have their choice dictated by the injection frequency with which they want to deal with when using the compound, but of course they will also likely be limited by those that are made available to them. GP 1-Test Cyp is a product that contains 200mg of the Dihydroboldenone Cypionate.

Anecdotally some users have indicated that post-injection pain with dihydroboldenone can become an issue for some. Diluting the drug with either another injectable drug or some other type of sterile oil seems to alleviate at least some of this discomfort. The type of ester used does not appear to negate this pain for the users that experience it however.

1-Testosterone is still available on the black market as injectable 1-testosterone cypionate.While 1-testosterone and its direct prohormone 1-androstenediol are banned, 1-DHEA(1-androsterone) is still legally available and converts to 1-testosterone in a two step process.


Dihydroboldenone, while not overly androgenic, is a potent anabolic. It has been demonstrated that the drug binds extremely well and selectively to the androgen receptor and stimulates androgen receptor transactivation of dependent reporter genes . This equates to a drug that possesses the ability to stimulate significant muscle growth while not producing androgenic side effects.Also it  does not aromatize and therefore estrogenic side effects such as gynecomastia and water retention are not a concern for users. It has been shown to be by far more anabolic than such compounds as boldenone, nandrolone , and even testosterone itself. Obviously this is of great benefit to many athletes.


As for specific dosages used with this drug, the low end is primarily thought to be 300-400mg a week for male users. For females the usual rules apply with dihydroboldenone as they do with other drugs. Anywhere from 25-100mg per week would be a good starting point for the majority of female users who have little to moderate experience with anabolic drugs.

The frequency of dosing with dihydroboldenone depends on the ester used with the compound. Seemingly the most popular current ester to produce the drug with is cypionate. Typcially, males would use a dosage of 200-400mg Dihydroboldenone Cypionate a week.No matter what ester utilized however the same rules would apply as with any other drug in terms of the frequency of administration needed to maintain relatively stable blood levels of the compound.

Orally, 1-testosterone has a very short half-life and is not very bioavailable because it is not methylated to avoid breakdown by the liver. When 1-testosterone is administered as a transdermal (absorbed through the skin), bioavailability is increased but its short half-life is still an issue. 1-testosterone was also sold as an injectable as 1-testosterone cypionate, which greatly increased half-life to about 4-5 days, making this the most effective way to use 1-testosterone. When injected, only 100-200mg/week is needed for an effective cycle.

Risks/Side Effects

With the positive aspects of the lack of aromatization associated with dihydroboldenone also come the negative ones. Fortunately these are primarily limited to such symptoms as lethargy, malaise and possibly a reduction in sex drive. These are caused by a lower ratio of estrogen in comparison to androgens in the body. For the most part however this effect is relatively slight and can be avoided with the use of steroids that do aromatize in conjunction with dihydroboldenone and thus restore a better balance in terms of androgens versus estrogen.

It also appears that the administration of dihydroboldenone may result in an increase in liver weight . This effect occurred when administering the drug orally but should also be true of the drug when administered via intramuscular injection. There is no research to indicate this however.

Other common negative side effects associated with the use of anabolic/androgenic steroids are still relatively mild with the use of dihydroboldenone. Of course suppression of the natural testosterone production of users will occur like with all steroids, however other side effects such as an increase in blood pressure, acne and others are comparably mild and often times non-existent in users, at least as they are directly related to the administration of this drug.

In terms of side effects for women, at moderate to heavy doses symptoms of virilization are likely. These can include such symptoms as clitoral enlargement, body hair growth and deepening of the voice. At lower doses however these side effects should not be a concern for the majority of potential female users.

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