primobolan cycle

Primobolan Cycle (Methenolone Guide)

Updated January 21, 2021
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Do you want to build muscle whilst shredding body fat and increasing muscle definition?

Although millions of men around the world are coveting this same goal, the reality is, getting ripped is pretty difficult. This is why some turn to steroids or pro-hormones in order to speed up the process.

There are various different types of steroids, with each one created to serve a specific purpose.

Some steroids are purely for building strength and muscle mass, whereas others are designed to help you melt body fat. For individuals looking to build muscle, while simultaneously stripping body fat, a Primobolan cycle could be exactly what they need.

Primobolan has proven to be very popular among bodybuilders and fitness fanatics over the last 40 years, but does it really live up to the hype?

primobolan cycle

What is Primobolan?

Before we begin to cover the specifics behind running a Primobolan cycle, we must first take the time to understand exactly what this steroid is.

Primobolan is a steroid that can be consumed orally, or injected into the body. Despite it having anabolic effects, it’s often used as a cutting steroid, due to its ability to burn fat. Primobolan also doesn’t cause any bloating or water retention, unlike other compounds.

Primobolan’s chemical name is methenolone and it’s such a popular steroid, many consider it a more coveted steroid than the likes of trenbolone or winstrol.

Now, when you compare Primobolan to other powerful steroids, including tren and dianabol; Primobolan’s actually pretty mild, with low androgenic/anabolic ratings.

Because of this many of the ‘hardcore’ bodybuilders tend to use more toxic steroids, because on paper it’s a weaker compound. However, don’t let that fool you, because when Primo’s used correctly, it can give you some serious gains.

In actual fact, a lot of old-school bodybuilders from the Golden-Era of bodybuilding (the 70s and 80s) would use Primobolan, not just for building/maintaining muscle and burning fat, but also as a preventative measure against gynecomastia. This is because it doesn’t aromatize, meaning it prevents estrogen levels from rising. Gyno is caused by excessive levels of estrogen. Arnold is rumoured to be one of the great bodybuilders who used primo, helping him to become the greatest Mr Olympia champion of all time.

Primobolan Benefits

If you’re thinking of using Primobolan, here’s exactly what you can expect to happen (in regards to its benefits).

Lean Muscle Growth

Although Primobolan’s primarily a cutting steroid, don’t let that fool you; it can also be used to increase lean muscle mass.

Primo does this by enhancing nitrogen retention within the muscles. This is essential because in order to create an anabolic environment in the body, where new muscle tissue is being synthesized, a positive nitrogen balance is crucial.

This positive nitrogen balance can also help a bodybuilder retain muscle if they’re cutting on low calories, whereas otherwise your body would become catabolic and start burning muscle tissue for energy.

Even if you’re cutting…providing you’re training hard, eating right, and using other powerful steroids alongside primo, it’s actually possible to build a noticeable amount of muscle on Primobolan.

However, building muscle on a primobolan cycle won’t be to the extent of say – a dianabol cycle. So don’t expect to gain 20 pounds on lean muscle in just a couple of weeks. However, what steroids like dianabol won’t do is burn fat – which is what primo’s able to do.

Maintain Muscle

Bodybuilders often use Primobolan for cutting cycles, and the reason for this is to prevent a bodybuilders worst nightmare – muscle loss.

You see, in order to cut, you need to be in a caloric deficit.

This basically means that you need to be consuming fewer calories each day than your body needs to maintain itself in its current state.

The idea is that to make up for this lack of calories, your body taps into your existing fat stores. Great!

However, the problem lies when calories drop too low, which is when the body can begin to burn muscle tissue.

Primoblan however prevents such muscle catabolism, helping you remain big and full by the end of your cut.

Burns Fat

This is where Primobolan really comes into its own.

Simply, Primo’s one of the best fat burning steroids on the planet.

It revs up the metabolism and turns your body into a fat-burning machine.

Obviously, the steroid doesn’t work miracles, so if you really want to see the effects of Primobolan you’ll need to ensure you’re doing plenty of cardio, training right, and eating the right foods.

In simple terms, if you’re sat on the couch eating junk most days and barely training in the gym, don’t expect to look like Jeff Seid just because you’re taking the steroid.

If you’re smart with your training and nutrition, however, you’ll be amazed by the results.

Boosts Immunity

This next benefit may come as a surprise to a lot of people.

When people generally think of steroids, they think of them in a negative light, as they have a reputation for being dangerous.

However, Primobolan can offer some significant health benefits, as it’s been found to boost the immune system.

Your immune system protects you from illness and disease, and obviously the stronger your immune system, the healthier you become.

By taking Primobolan your immune system will strengthen, making yourself healthier and less-susceptible to illness/disease.

Side Effects

So, we’ve looked at the positives, now we’ll take a look at some of the negatives associated with Primo:

Potential Liver Toxicity

Although primo is one of the weaker steroids out there, and is much safer than other steroids, it still doesn’t make it completely safe.

Some people out there will claim that post cycle therapy, or PCT, following a Primobolan cycle is not required.

However, this is wrong and a PCT is necessary after taking primobolan.

Studies have also found that, in oral form, Primobolan can be toxic to the liver, which is why a PCT should be utilized (with milk thistle).

Primobolan and Hair Loss

Some people out there claim that primo causes hair loss.

It doesn’t in of itself.

What it does do, however, is speed up hair loss in some people.

So, say for example baldness runs in your family, if you were to use primo, you could find your hair falling out quicker.

If, however, you have a luscious head of hair, with no baldness in your family, taking promo WILL NOT cause your hair to fall out. Just look at Arnie back in the 80’s, he still had a good barnet and Jay Cutler too.

Primo is a DHT derivative, however, and like other DHT derivatives, it can accelerate hair loss.

Primobolan Cycle Protocol

In this next section we’ll talk about how to run an effective Primobolan cycle and what dosage to take.

Primobolan is also one of the best steroids for beginners.

For beginners, a basic cycle would be to take 400mg per week, for 10 weeks, stacked with 300 – 500mg of Testosterone per week.

For those who consider themselves to be more advanced, these guys will do cycles for 10 weeks, taking 1000mg of Primobolan per week, stacked with 100mg of Testosterone per week, and 500mg of Trenbolone per week. This is only for advanced bodybuilders.

Typical Cycle Results – What Can You Expect?

When it comes to steroids, everyone is different, meaning that results can vary. This is due to different genetics, training and nutrition.

However, as a general rule, many people will find that on Primobolan, their body fat percentage drops pretty quickly, and you’ll have a lot more energy compared to usual.

It’s pretty rare to see increases in strength when using Primobolan, but equally your strength won’t go down when cutting, which is a big advantage.

You’ll look leaner, more ripped and you’ll become more vascular.

When prepping for a contest or photoshoot, Primobolan is a versatile steroid that can give you quick results.


See all references


Llewellyn, William (2011), Anabolics. Jupiter, FL: Molecular Nutrition. pp. 667-673.


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The author

Ernst Peibst
Ernst Peibst has spent over 3,000 hours researching anabolic steroids and PED’s. He’s also dedicated the last 7 years educating people about their effects, with hundreds of thousands of people reading his articles. He’s studied countless science papers, read several expert books and has consulted some of the finest doctors in the world – on the topic of steroids.

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