Overview and History of PRIMOMED 100 (Methenolone Enanthate)

Metenolone enanthate, or methenolone enanthate, sold under the trade name Primobolan / PRIMOMED 100 (Methenolone Enanthate). Injectable Primobolan is called Methenolone Enanthate, while the oral format is known as Methenolone Acetate. PRIMOMED 100 (Methenolone Enanthate) is a high-quality anabolic steroid which is available as an oil-based injectable form. Together with Trenbolone, PRIMOMED 100 (Methenolone Enanthate) is the most popular injectable anabolic androgenic steroid (AAS) for cutting cycles. PRIMOMED 100 (Methenolone Enanthate) is often compared to a similar anabolic steroid, ANAVAMED 10 (Oxandrolone). Both steroids are considered very ‘mild’ in regards to potential side effects. But the difference between these two steroids is very big – ANAVAMED 10 (Oxandrolone) possesses a far greater anabolic strength rating than PRIMOMED 100 (Methenolone Enanthate).

PRIMOMED 100 (Methenolone Enanthate) is considered a fairly weak steroid, weaker in fact, than Testosterone itself. It's anabolic/androgenic ratings are very low – it possesses an anabolic rating of 88, and its androgenic strength rating is approximately 44 – 57. At the same time, PRIMOMED 100 (Methenolone Enanthate) has a huge advantage over most steroids, because that is stronger than testosterone at binding to the androgen receptor. It is a fantastic steroid which can be used as the main compound in cutting cycles and it's a good aid for fat loss. PRIMOMED 100 (Methenolone Enanthate) is a favorite choice of many competitive bodybuilders.

Primobolan/PRIMOMED 100 (Methenolone Enanthate) has always been identified as a European steroid. That was first released in 1960. Squibb introduced the drug to the American market in 1962. The product was marketed under the brand name Nibal Depot (for the injectable) and Nibal for the oral variant dosed at 20mg per tablet. Later that year the rights for manufacture of the compound were sold to Schering in West Germany (now Bayer).  Schering started to sell it under the Primobolan trade name. Soon Nibal was removed from the US market and never returned as a commercial product. Schering now had exclusive patent rights and consumers had naturally come to identify this anabolic steroid as a product of Schering. Although Primobolan/PRIMOMED 100 (Methenolone Enanthate) was never marketed in the United States after Schering had bought the rights to it, it is still listed as an FDA approved drug. This fact had enabled American doctors to be able to import it on special order.

PRIMOMED 100 (Methenolone Enanthate) can be used within the medical field by individuals suffering from conditions in which muscle wasting and severe weight loss is a symptom. This steroid has also been used as an immunostimulant for individuals fighting infections, wasting conditions, an adjunct to countering the effects of prolonged corticosteroid therapy, and the treatment of osteoporosis as well as sarcopenia (the loss of muscle as correlated with aging). The same like ANAVAMED 10 (Oxandrolone), PRIMOMED 100 (Methenolone Enanthate) is proven to be so mild in its negative effects that it has also been utilized in children and infants in order to promote weight gain in prematurely born infants without any indications of ill effects or toxicity. PRIMOMED 100 (Methenolone Enanthate) is one of the few anabolic steroids that have zero risks of any Estrogenic side effects. Also, its very weak androgenic strength rating lowers the risk of the potential androgenic side effects.

Chemical Characteristics of PRIMOMED 100 (Methenolone Enanthate)

Primobolan/PRIMOMED 100 (Methenolone Enanthate) is a  Dihydrotestosterone (DHT) derivative. It contains one additional double bond between carbons 1 and 2 in the Dihydrotestosterone structure. This helps to stabilize the 3-keto group and increase the anabolic strength of the hormone. A 1-methyl group is also added to the hormone, which protects the steroid against hepatic metabolism and breakdown. The injectable format (Methenolone Enanthate) in particular is simply Methenolone with the Enanthate ester bound to the Methenolone chemical structure. ‘Enanthate’ is Enanthoic acid (also known as carboxylic acid), but once bound to Methenolone it is properly referred to in chemistry as an ester bond (or ester linkage). Enanthoic acid is attached to the 17-beta-hydroxyl group on the Methenolone structure. The addition of this ester augments the hormone’s release rate and half-life to favor a longer window of release. As soon as Methenolone Enanthate enters the bloodstream, enzymes work to break the bond between the ester and the hormone, which takes a varying amount of time. This results that when the ester is removed from the hormone by these enzymes, the pure Methenolone is free to do its work in the body. When the Enanthate ester is attached to Methenolone, creating Methenolone Enanthate, the half-life of PRIMOMED 100 (Methenolone Enanthate) is now extended to 10 days, providing a slower release and activity of the hormone.

Properties of PRIMOMED 100 (Methenolone Enanthate)

Being a DHT-derivative, PRIMOMED 100 (Methenolone Enanthate) holds many of the same properties as its parent hormone. It is not aromatized by the aromatase enzyme into Estrogen at any dose, meaning you won't need an aromatase inhibitor (AI) or SERM with it. Besides, the user should never experience any Estrogen related side effects while using the PRIMOMED 100 (Methenolone Enanthate) alone. This means that it completely avoids the potential for any of the following side effects: water retention and bloating, elevated blood pressure (as a result of water retention), possible fat gain/retention, and gynecomastia. Because of its poor anabolic strength rating, which is lower in strength than TESTOMED E 250 (Testosterone Enanthate), PRIMOMED 100 (Methenolone Enanthate) is not preferred by athletes or bodybuilders for bulking cycles, lean mass cycles, or for any measurable strength gain. That is best to combine PRIMOMED 100 (Methenolone Enanthate) with other anabolic steroids as well, whether utilizing it for a cutting cycle or a bulking or lean mass cycle. Many anabolic steroid users claim that the use of PRIMOMED 100 (Methenolone Enanthate) alone is a useless practice because it is useful only at very high doses. Choose PRIMOMED 100 (Methenolone Enanthate) if you are looking for increased strength, enhanced muscular endurance, and recovery in the cutting cycle, where the goal is losing body fat while maintaining muscle mass.

PRIMOMED 100 (Methenolone Enanthate) Side Effects

PRIMOMED 100 (Methenolone Enanthate) is a DHT-derivative and it carries many similar properties and characteristics, including the inability to convert (aromatize) into Estrogen at any dose used. This is a very important fact to most users who are worried about Estrogenic side effects, such as bloating, gynecomastia, high blood pressure as a result of water retention, etc. PRIMOMED 100 (Methenolone Enanthate) is often regarded by athletes and bodybuilders as being a ‘mild’ and safe anabolic steroid in comparison to other products. If used in small clinical doses (20-25 mg daily) PRIMOMED 100 (Methenolone Enanthate) is described as having a low impact on endogenous testosterone production and HPTA function, attention should be paid if it is used for physique or performance-enhancing purposes. In one study, more than half of the patients receiving only 30-45 mg per day noticed a 15-65% suppression of gonadotropin levels. It is recommended to perform a proper PCT (Post Cycle Therapy) following the discontinuation of PRIMOMED 100 (Methenolone Enanthate).

PRIMOMED 100 (Methenolone Enanthate) Cycles and Use

PRIMOMED 100 (Methenolone Enanthate) cycles are commonly in the form of fat loss and/or cutting cycles. This steroid is almost never used as a bulking or mass-gaining agent, but it is a great solution to use as a pre-contest drug in the final weeks leading up to a competition show or photo shoot. Many bodybuilders often combine PRIMOMED 100 (Methenolone Enanthate) with other compounds that hold similar qualities, properties, and half-lives. It is typically cycled with TESTOMED P 100 (Testosterone Propionate) (or TESTOMED E 250 (Testosterone Enanthate)) and use it for the first 8 weeks of a cycle in order to assist in the retention of muscle mass during periods of low caloric intake. PRIMOMED 100 (Methenolone Enanthate) can be run in cycle lengths of 10 – 12 weeks (or longer, depending on the individual’s goals and desires).

Dosages and Administration of PRIMOMED 100 (Methenolone Enanthate)

As mentioned previously, in order to get good results fairly high doses of PRIMOMED 100 (Methenolone Enanthate) should be used. For men, injectable dosages should be 600-800mgs per week or higher. For women, that is recommended to use only oral Primobolan. Medical prescription dosages of PRIMOMED 100 (Methenolone Enanthate) outline 200mg as a first dosage, followed with 100mg every week for the complete duration of therapy. Depending on the medical condition of the patient the right dosage of PRIMOMED 100 (Methenolone Enanthate) is determined. The dosage can range anywhere from 100mg every one or two weeks to 200mg every two to three weeks. Beginner dosages of PRIMOMED 100 (Methenolone Enanthate) for bodybuilders and athletes normally start at about 400mg per week. Intermediate PRIMOMED 100 (Methenolone Enanthate) dosages are usually in the range of 400 – 700mg per week, which should be adequate enough, and advanced users may venture as high as 800 – 1,000mg per week. Female PRIMOMED 100 (Methenolone Enanthate) dosages in terms of safety and minimal virilization are usually in the range of 50 – 100mg per week. Injectable PRIMOMED 100 (Methenolone Enanthate) tends to be used far less frequently by females than the oral variant, which is the preferred form for ladies.

Injectable PRIMOMED 100 (Methenolone Enanthate) exhibits a half-life of 7 – 10 days due to the Enanthate ester and should be administered twice per week, with each injection spaced evenly apart, in order to maintain stable and steady blood plasma levels.


Chemical info /  Information
Primobolan (Methenolone)
Chemical Name: 17beta-Hydroxy-1-methyl-5alpha-androst-1-en-3-one, 1-methyl-1(5-alpha)-androsten-3-one-17b-ol
Molecular Weight: 414.621 g/mol
Formula: C27H42O3
Original Manufacturer: Squibb
Elimination half-life: 10 days (Enanthate), 2 – 3 days (oral)
Detection Time: 4 – 5 weeks
Anabolic Rating: 88