Primobolan A Popular Steroid Amongst Athletes for Its Limited Side Effects

All You Need to Know About Primobolan

Primobolan is nowhere near the most popular or powerful anabolic steroid on the market. But it is still popular, maybe for a different reason. The compound seems to hold potential for great results, if used for the correct purpose. It is said to be one of Arnold Schwarzenegger’s favorite steroids. You may conclude the benefits are obvious in that case, if the rumors are true.



In this article, we attempt to provide you with all you should know before using this drug, if you are already considering that. Learn about its pros, cons, and usage.

What is Primobolan?

Primobolan is a popular trade name of the anabolic and androgen steroid metenolone or methenolone. This compound is a familiar one to many experienced steroid users, who often call it “Primo.” It has a mild nature that makes it more tolerable to use that many other steroids.

Metenolone is a synthetic androstane steroid derived from dihydrotestosterone (DHT). It is a structurally altered form of the testosterone by-product, with the addition of a double bond at carbon atoms 1 and 2 of the latter. The substance also has an extra 1-methyl group for protection against metabolism and breakdown in the liver.

Primobolan shares several qualities with its parent substance. A major one is the fact that the aromatase enzyme does not aromatize it into the female hormone estrogen. This makes it less likely to produce estrogenic side effects, such as fluid retention and gynecomastia.

This drug often draws comparison with another popular anabolic steroid Anavar. But Primobolan is actually milder than that other compound. It has an androgenic rating of between 44 and 57 and anabolic rating of 88. Both ratings are even lower than those of testosterone.

First released in 1962, Primobolan was originally released by Squibb into the U.S. market. The first to be commercial available was the injectable form known as metenolone enanthate. An oral form, metenolone acetate, later emerged in the same year. The company sold the steroid under the brand name Nibal.

The injectable variant is now sold under the brand name Primobolan Depot. The oral form is usually simply referred to as Primobolan.

Why Do People Use Primobolan?

Metenolone was originally released for medical use. It is mainly used in the treatment of anemia resulting from a bone marrow failure. It has also found use in the management of conditions whose symptoms include muscle wasting. The steroid reportedly helps in promoting weight gain in infants born prematurely.

One of the major traits of Primobolan is its ability to boost the immune system. As an immuno stimulant, it enhances the ability of the body to fight infections. It is reported that it is used in the treatment of people with AIDS for this reason and to prevent muscle wasting.

A key reason Primo has been adopted in the athletic and bodybuilding circle has to do with cutting. It is actually a favorite for many users for promoting a well-chiseled body. The steroid puts your body in a state that helps you to burn fat faster. It enhances your metabolic rate.

You may be aware that as metabolism improves there is also risk of lean muscle mass loss. That actually explains why many users find Primobolan fascinating. It helps with protein synthesis and nitrogen retention, thus proving beneficial for muscle mass gains.

Athletes also use methenolone, although it is not usually a favorite for performance enhancement. These users will find it more beneficial for promoting faster recovery. It only gives a moderate boost in strength and endurance.

It is not very common to find Primobolan in the off-season bulking cycle of most users. The compound is not as effective as some other anabolic steroids in packing on mass. But that’s when men are concerned. The story is different for women in that they are typically more sensitive to this type of compounds.

How is Primobolan Used?

As we mentioned, methenolone is available in both oral and injectable forms. The latter variant is more popular among non-medical users. It features methenolone attached to a large enanthate ester. This form stays longer in the body.

But metenolone acetate hasn’t always been an oral steroid. It was at one time offered by the German drug company Schering in injectable form. That was the favorite of many in the bodybuilding community, until production was halted in the 1990s. It is now extremely difficult to obtain, which explains the preference for Primobolan Depot these days.

The ideal doses of the steroid will depend on the form, gender, and purpose of use.

In therapeutic settings, the typical dosage for a first timer is 200 mg. This is followed by a dose of 100 mg to 200 mg every one or two weeks, depending on the condition. Most oral dosages fall in the range 100 mg to 150 mg per day. There is no standard guide on dosing for female users.

Dosing in the bodybuilding and athletic circle is somewhat similar to that of medical uses. Dosing often starts at about 50 mg per day for male and could be as high as 200 mg per day. Safe dosage for female users will range from around 25 mg to 50 mg per day.

Daily doses usually apply to the oral form of methenolone. There is no need to split them into smaller amounts. For the injectable variant, users typically use it once every week or every two weeks because of the longer half-life. Oral form is preferable for female users.

Bodybuilders stack methenolone with testosterone (enanthate or propionate form). The steroid also stacks with Trenbolone, Winstrol, Anavar, or Masteron. Standard cycle duration of use is about 6-8 weeks.

Legality and Availability

Primobolan is a Schedule III controlled substance in the U.S. It has not been manufactured in the country since Squibb ceased production in the 1960s. The drug stopped selling in America since then, although it remained on the list of drugs approved by the FDA. It is considered a “European anabolic steroid,” having been manufactured in Europe for most of the years it’s been around.

Schering, which acquired rights to methenolone, pulled the drug from most markets following the rise in illicit use. It is legally available in a handful of countries, including Turkey, Japan, and Spain.

What all this means is that it is rather tough getting quality Primobolan, compared to some other steroids. But the injectable enanthate ester is easier to get than both oral and injectable acetate ester variants.

An implication of the difficulty in obtaining Primobolan is that you may easily end up with counterfeits. Plus, if you live in the U.S., you will be breaking the law by buying the anabolic steroid online.

Risks and Side Effects

Primobolan ranks among the safer anabolic steroids, more so than Anavar. It has a mild nature and lower androgenic strength, making it less likely to produce side effects.

But there is still risk of side effects. It is still strong enough to cause androgenic issues in female users, especially when taken in high doses. Possible problems include facial and body hair growth, clitoral enlargement, and deepening of the vocal chords.

Primobolan can suppress natural production of testosterone, although at a lesser extent compared to most other steroids. Exogenous testosterone is advisable when using the compound.

The drug has almost no effect on blood pressure. But high doses, as often seen in performance circles, can increase risk of cardiovascular problems. Such can increase “bad” cholesterol levels, while reducing “good” cholesterol levels.

Methenolone is somewhat unique among orally active steroids. It is not a C17-alpha alkylated compound. This is one of the reasons it is used by many people. It means the steroid poses less risk to the liver.


Primobolan is an anabolic steroid that almost all classes of users can use due to its mild nature. It is more commonly used in cutting cycles. The compound is effective for promoting “cut,” well chiseled appearance. But non-medical use is usually considered illegal and you could be prosecuted for such.

Side effects are still possible from the use of methenolone, especially for physique and performance improvement. You could promote fat loss and enhance performance by boosting your growth hormone levels naturally. Legal HGH releasers, such as GenF20 Plus and Somatropinne, may be better, at least safer, when looking to enjoy similar benefits.



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