You May Also know Primobolan as Primo or Methenolone. This anabolic androgenic steroid is derived from DHT and comes in both oral and injectable forms.

It was first used back in the US in the 1960s for various medical purposes. The effects of Primobolan have also been studied in breast cancer therapy.

However, the use of Methenolone was quickly stopped.

These days, it’s used by bodybuilders to improve their physical performance and muscle mass.

There are two forms of Primo. Let us take a quick look at every one of them.


You’ve got the injectable version which is called Methenolone Enanthate.

It has a longer-lasting ester than the oral version. The half-life of this compound is quite long, roughly 10 days.

It’s derived from Dihydrotestosterone so it can’t aromatize. This means users won’t have to worry about side effects such as Gynecomastia.

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The oral version of Primobolan is known as Methenolone Acetate.

As previously mentioned, this compound has a briefer half-life compared to injectable primo. The half-life of this compound is between 4 to 6 hours.

Methenolone Acetate is the only oral steroid that’s non-17-alpha-alkylated. This makes it much less liver hazardous compared to other oral steroids such as Dianabol and Winstrol.

However, it has weak bioavailability. This implies it will be much poorer compared to other steroids.


Primo is mainly used during cutting cycles or pre-contest. It can help greatly with muscle hardening but it’s not really that effective at building mass.

When it comes down to gaining dimensions, bodybuilders will choose a chemical such as Deca Durabolin or Anadrol to build size.

Many people underestimate the ramifications of Primobolan. On its own, it’s not really as powerful. You can sort of compare it to Masteron.

But when it’s stacked with other AAS, that is when it gets the capability to reveal it’s full potential.

Obviously, it isn’t as strong as the famed steroid Trenbolone but it will have its own set of consequences.

It is mainly known for its muscle hardening effects. It will cause you to appear fuller, defined and harder. You can also expect greater vascularity, strength and improved fat reduction.

Primo will also greatly speed up the muscle recovery process.

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Based on anecdotal experiences, many bodybuilders appear to take roughly 400mg of Primo a week. Anecdotal experiences tell us that a bicycle is between 2 to 10 weeks.

If it comes to oral Primobolan, a typical dosage appears to be 150mg daily. You’ll find bodybuilders who run it in a higher dosage, but it isn’t advised.

It is often piled with steroids such as Sustanon or Testosterone Enanthate.


As it’s regarded as a mild compound, you’ll discover that lots of female bodybuilders use it also.

The average dose for girls seems to be involving 25-50mgper week for 4-6 weeks.

Primo and Anavar are the most well-known compounds for ladies. They’re somewhat mild compared to the rest but still take a lot of side effects.

Women should watch out for virilization symptoms.


Though Primobolan depot might not be as strong as other steroids, it carries side effects.

This should you make think twice about using anabolic steroids. As for me, I would suggest checking out legal steroid alternatives.

Side effects related to the use of Primobolan include baldness, acne and testosterone reduction. This means a Post Cycle therapy may be needed to restore hormone levels.


Steroids can have severe health dangers and I highly suggest staying away from these.

There are far better alternatives to those compounds. Personally, I am a big fan of those Crazybulk legal steroids.

They’ll help you reach your targets in a natural and secure way.


Primobolan isn’t as popular and effective as steroids like Turinabol but still has it’s set.

A good deal of bodybuilders chooses to stack it with different anabolics to optimize results and effects.

Despite being very mild, it can have severe side effects and shouldn’t be underestimated.

It’s advised to consider legal steroid alternatives because they don’t take any unwanted effects.