Tag Archives: Primobolan


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
Half Life: 10 days (Enanthate), 2 – 3 days (oral)
Detection Time: 4 – 5 weeks
Anabolic Rating: 88
Androgenic Rating: 44 – 57
Overview and History of Primobolan

Primobolan is that the brand name for the steroid Methenolone (also written as Metenolone). it’s out there in each associate injectable oil-based format, also as associate oral type. injectable Primobolan is thought as Methenolone Enanthate, and therefore the oral format is thought as Methenolone Acetate. it’s terribly|a really|a awfully} well-known associated in style steroid owing to its very delicate nature as each associate anabolic and an steroid compound. it’s usually compared to Anavar, the same steroid however the distinction between the 2 is extremely distinct – Anavar possesses a so much bigger anabolic strength rating than will Primobolan. Primobolan is really a awfully weak steroid, weaker if truth be told, than androgen itself. Primobolan possesses associate anabolic rating of eighty eight, whereas Testosterone’s anabolic strength rating is one hundred – this demonstrates Primobolan’s fairly weak strength in terms of anabolic capabilities. a similar holds true for its steroid strength rating, that is close to forty four – fifty seven compared with Testosterone’s steroid rating of one hundred. This weaker steroid strength rating of Primobolan is really terribly favorable, however its weak anabolic strength capability leaves it as a so much less desired steroid wherever the bulk of people considering its use usually decide on Anavar instead. Primobolan is instead used as primarily a compound in cutting cycles, whereby the preservation of muscle mass is that the goal rather than the addition of recent mass. on this same line of logic, Primobolan is nearly ne’er used in bulking cycles owing to its lack in anabolic strength.

Primobolan’s properties and details were 1st free and revealed in 1960[1]. Squibb free the injectable format of Primobolan (Methenolone Enanthate) 1st in 1962 followed by the discharge of the oral variant of Primobolan (Methenolone Acetate) into the yankee market within the same year[2]. it absolutely was at the time marketed underneath the name Nibal Depot (for the injectable) and Nibal for the oral variant treated at 20mg per pill. terribly shortly after, the rights for manufacture of the compound were oversubscribed in European country to Schering. Following this sale of rights, Nibal was faraway from the United States of America market and instead, Schering marketed the compound underneath the new brand name Primobolan (for each variants). Primobolan then became the illustration steroid factory-made by Schering, WHO then marketed the compound as associate internationally exclusive drug, and would ne’er come back to the yankee Market. a noteworthy purpose to notice is that despite the fact that Primobolan was ne’er marketed within the us when Schering had bought the rights thereto, it’s still listed as associate office approved drug. This had enabled yankee doctors to be ready to import Primobolan on special order.

Within the medical field, Primobolan is used to treat people laid low with conditions during which muscle wasting and severe weight loss may be a symptom. alternative uses include: associate immunostimulant for people fighting infections, wasting conditions, associate adjunct to countering the results of prolonged corticoid medical care, and therefore the treatment of pathology also as sarcopenia (the loss of muscle as related to with aging). Primobolan, like Anavar, as tried to be therefore delicate in its negative effects that it’s conjointly been used in youngsters also as infants so as to market weight gain in premature born infants with none indications of unwell effects or toxicity[3]. One will simply see wherever the attract of this steroid comes from inside the athletic and physical exercise community, because it may be a compound that exhibits weak steroid effects with little to no facet effects.

Like most anabolic steroids at the time, Primobolan within the early Nineties was eventually force from all markets and Schering ceased production as a results of the more and more growing delirium close anabolic steroids and therefore the growing anti-steroid sentiment within the media of the time. As a result, pharmaceutical Primobolan factory-made by Schering is these days solely oversubscribed in a very little choose range of nations across the planet, like European country Turkey, Japan, Paraguay, and Republic of Ecuador.

As so much because the oral variant of Primobolan cares (Methenolone Acetate), it too was force from the bulk of markets and ceased production also. However, pharmaceutical grade oral Primobolan are often settled in Japan and African country. In general, pharmaceutical grade oral Primobolan product area unit even additional rare than the injectable, and solely little amounts of 5mg and 25mg tablets from Schering should still be settled on the market in very rare and little amounts.

Chemical Characteristics of Primobolan

Primobolan may be a Dihydrostestosterone (DHT) by-product, landing it within the family of DHT-derivatives and analogues. Primobolan may be a changed variety of DHT, wherever it contains a double-bond between carbon atoms one and a pair of within the Dihydrotestosterone structure. this is often famous to help within the stabilization of the 3-keto cluster that successively will increase the anabolic strength of the endocrine. A 1-methyl cluster is additionally value-added to the endocrine, that is chargeable for permitting the endocrine to resist viscus (liver) metabolism and breakdown.

The oral format of Primobolan holds associate Acetate organic compound with chemicals guaranteed thereto, that is connected to the 17-beta-hydroxyl cluster on the chemical structure. this permits the oral steroid to be proof against oxidisation and viscus breakdown through oral administration. The oral variety of Primobolan has incontestible effective oral bioavailability in studies as each in its Acetate format also as its un-esterified format[4] [5]. Esterification can currently be explained in additional detail.

The injectable format of Primobolan (Methenolone Enanthate) particularly is solely Methenolone with the Enanthate organic compound guaranteed to the Methenolone chemical structure. Specifically, ‘Enanthate’ is Enanthoic acid (also referred to as carboxyl acid), however once guaranteed to Methenolone it’s properly cited in chemistry as associate organic compound bond (or organic compound linkage). Enanthoic acid is with chemicals guaranteed to the 17-beta chemical group on the Methenolone structure.  The addition of this organic compound augments the hormone’s unleash rate and half-life to favor a extended window of unleash. the first reason for the augmentation of its half-life and unleash rate is as a result of once Methenolone Enanthate enters the blood, enzymes work to interrupt the bond between the organic compound and therefore the endocrine, that takes a varied quantity of your time. the top result’s that of the organic compound being faraway from the endocrine by these enzymes, and therefore the result when this is often pure Methenolone that’s absolve to do its add the body. This method of enzymes removing the organic compound from the endocrine to that it’s connected is what’s chargeable for the slower unleash rates. once the Enanthate organic compound is connected to Methenolone, making Methenolone Enanthate, the half-life of Primobolan is currently extended to ten days, providing a slower unleash and activity of the endocrine.

Properties of Primobolan

Primobolan being a DHT-derivative, it holds several of a similar properties of its parent endocrine. as an example Primobolan isn’t aromatized by the aromatase catalyst into steroid at any dose[6]. Therefore, any person wanting to utilize Primobolan ought to ne’er expertise any steroid connected facet effects from Primobolan alone. this implies that Primobolan fully avoids the potential for any of the subsequent facet effects: water retention and bloating, elevated pressure (as a results of water retention), potential fat gain/retention, and abnormal condition. while not the puffy and soft look that aromatizable anabolic steroids offer the physique, Primobolan is regarded by the bulk of bodybuilders and athletes as a most popular ‘cutting’ compound thought-about terribly helpful for pre-contest cycles and fat loss and cutting phases.

Unfortunately, due to its poor anabolic strength rating creating it lower in strength than androgen, Primobolan isn’t most popular by athletes or bodybuilders for bulking cycles, lean mass cycles, or for any measurable strength gain. Primobolan is additionally best combined with (stacked with) alternative anabolic steroids also, whether or not utilizing it for a cutting cycle or a bulking or lean mass cycle. the utilization of Primobolan solitarily on its own is regarded by several as a close to useless follow, and on these same lines, several steroid users claim that Primobolan is barely helpful at terribly high doses, which can not be terribly sensible considering the high price of this steroid. This dosing data are going to be additional enlarged within the Primobolan doses section of this profile.