Primobolan Cycles (Methenolone Guide)

primobolan cycle

Do you want to build muscle whilst shredding body fat and increasing muscle definition?

The reality is, this is pretty difficult to do and many people turn to the use of steroids or prohormones to speed up the process and achieve major results.

For individuals looking to build muscle, while simultaneously stripping body fat, a Primobolan cycle could be exactly what they need.

In this article, we’ll reveal everything you need to know about Primobolan in order to decide whether or not you should consider its use for crushing your physique goals.

Warning: The content on and the information included in this article is intended for entertainment and informational purposes only. It is not intended nor implied to be a substitute for professional medical advice. Prior to buying anything, check that it is compliant where you live with your current government laws. We frequently mention research chemicals that are not made for human consumption. Therefore, before purchasing any product for personal use, consult with your doctor or healthcare provider first.

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. [1]

Now, when you compare Primobolan to other powerful steroids, including tren and dianabol; Primobolan’s actually pretty mild, with low androgenic/anabolic ratings. [2]

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.

Primobolan Cycle for Females

Because Primobolan has low androgenic properties it is an appropriate steroid for women to use.

A popular and effective cycle for women stacks Primobolan with Cardarine GW-501516 and the insulin modulator NSLin. These two compounds will enhance fat loss, endurance, and workout recovery.

Here is what the six-week stack looks like (with a four week PCT of HCGenerate ES at the end of the cycle):

WeekPrimobolanCardarineNslinHCGenerate ES
125 mgs/ed20 mgs/ed2 caps before meals
225 mgs/ed20 mgs/ed2 caps before meals
325 mgs/ed20 mgs/ed2 caps before meals
425 mgs/ed20 mgs/ed2 caps before meals
525 mgs/ed20 mgs/ed2 caps before meals
625 mgs/ed20 mgs/ed2 caps before meals
720 mgs/ed2 caps before meals5 caps/ed
820 mgs/ed2 caps before meals5 caps/ed
920 mgs/ed2 caps before meals5 caps/ed
1020 mgs/ed2 caps before meals5 caps/ed

Women will experience some side effects when using Primobolan. These include emasculating effects despite the fact that Primobolan is only mildly androgenic.

The most common emasculating effects of Primobolan on women are:

  • Facial hair growth
  • Deepening of the voice
  • Clitoral enlargement
  • Acne

Primobolan is well known for its side effect of hair loss. Women who are already prone to hair loss should think twice before taking this steroid.

Such alpha-5 reductase inhibitors as Finistrade are sometimes cycled along with Primobolan to counter this effect.

Primobolan is also known to increase bad LDL cholesterol levels while decreasing HDL good cholesterol levels. You can help to counter this effect by maintaining a cholesterol-friendly diet that is high in omega-3 fatty acids and low in saturated fats and simple carbohydrates.

Even though women produce lower amounts of testosterone than men, they will still see a natural production suppression as a result of Primobolan use.

As a result, they should embark upon a PVT cycle at the conclusion of their Primobolan cycle.

Primobolan PCT

Because of its mild nature and the fact that it is not a synthetic version of testosterone, Primobolan is not going to suppress your testosterone levels.

However, other drugs that you stack with it on your cycle will determine the strength and duration of your post cycle therapy (PCT).

PCT is done to reverse the suppression of testosterone that can occur during a steroid cycle.

The best PCT agents are Clomid and Nolvadex.

Primobolan Dosage

As a result of its relatively low anabolic rating, the dosage for Primobolan is higher than many other steroids. These higher dosages make this anabolic only suitable for use as a cutting agent.

For use as a mass builder, the dosage would simply be too high.

For best effects, I recommend injecting rather than taking this compound in tablet form.

Beginners should take 400 mg weekly. Intermediate users can ramp that up to 700 mg while advanced users can take it to 1000 mg per week.

The dosage should be split into a twice-weekly injection. You should have a gap of around three days between each injection.

Injectable Primobolan has a far longer half-life than the oral version, of around ten days. Women should use half the dosage that men do.

The oral form of the drug makes a good option for people who are wary about injecting themselves. However, it is not quite as effective as the injectable.

Both beginner and intermediate users can safely take 150 mg per day. Advanced users can increase this to 200 mg per day.

If you choose to take an oral dosage higher than that you should know that you increase the risk of liver toxicity.

Women will get good results from much lower dosages of oral Primobolan. They should take between 50 and 75 mg per day.

Primobolan Stack

Primobolan is usually stacked with other anabolics. The exception is when it comes to female users, who should cycle it on its own.

The other drugs that you include in your cycle will depend on your goals.

If you select steroids to stack with Primobolan that also come with the same benefits of not being aromatizing compounds, as well as not having estrogenic side effects, you can run some very powerful cycles without having to worry about side effects like gyno and water retention.

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.

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Primobolan vs Anavar

Both Primobolan and Anavar are popular mildly androgenic steroids. They are both good choices for first-time steroid cycles.

To determine which one is best for your needs, here’s a quick overview of Anavar . . .

Anavar is also called Oxandrolone. This is a mildly androgenic drug that is not very toxic.

Anavar is provided in oral form. Being a very mild drug, Anavar has very few side effects.

Like Primobolan, it is suitable for women to use.

Anavar is most commonly used to gain strength or post-competition during a leaning out phase. It is a popular steroid for women, probably being more popular than Primobolan.

In high amounts, it can cause liver toxicity but you do not need to take very much of it to get good results.

Along with Primobolan, Anavar is the most expensive steroid in the world to produce. Unfortunately, most of the Anavar that is being sold is fake.

That’s why women are taking up to 20 mg per day and men are consuming up to 100 mg per day.

If they were taking the real thing, they would not be able to afford that quantity and they wouldn’t need anywhere near that much.

For women, a daily dosage of 5 mg of real Anavar is more than adequate. For guys, a max dosage of 20 mg is recommended.

Anavar is more a strength booster than a muscle booster.

Primobolan is more anabolic than Anavar. So if you are wanting to take the steroid for bodybuilding purposes, you are better off with Primobolan than Anavar.

However, if your goal is more to get strong and cut, then you should opt for Anavar.

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Primobolan and Anavar Cycle

Primobolan and Anavar can be effectively stacked together for a safe cycle that has proven to be very effective for preparation for Women’s Bodybuilding and Men’s Physique competition.

You should run a Primobolan / Anavar cycle for eight weeks, followed by a PCT of four weeks. Here is what it should look like:

WeekPrimobolanAnavarHCGenerate ES
175 mgs/ed20 mgs/ed
275 mgs/ed20 mgs/ed
375 mgs/ed20 mgs/ed
475 mgs/ed20 mgs/ed
575 mgs/ed20 mgs/ed
475 mgs/ed20 mgs/ed
575 mgs/ed20 mgs/ed
675 mgs/ed20 mgs/ed
775 mgs/ed20 mgs/ed
875 mgs/ed20 mgs/ed
95 caps/ed
105 caps/ed
115 caps/ed
125 caps/ed

TRT and Primobolan Cycle

Primobolan can be safely added to a Testosterone Replacement Therapy program to turn that good anabolic feeling and improved sex drive you get with increased testosterone into a great feeling.

You can run 25 mg of Primobolan per day alongside a TRT treatment of up to 200 mg of testosterone per week.

Primobolan FAQ

Is Primobolan a form of Testosterone?

Primobolan is not really a form of testosterone – though it is close. It is based on the dihydrotestosterone hormone (DHT).

This an androgen hormone that occurs in the body through the conversion of testosterone. It is not produced from testosterone like other steroids.

Is Primobolan legal?

No, Primobolan is not legal. It can only be purchased legally with a doctor’s prescription.

It is classified as an anabolic steroid and so is banned by the World Anti Doping Agency (WADA) and all other sporting bodies around the world.

Primobolan is one of the more expensive steroids that you can buy on the black market.

What are the side effects of Primobolan?

Primobolan is different from many anabolic steroids in that it does not have estrogenic side effects. That means that it will give men female characteristics.

So there is no worrying about water retention or gyno when you are cycling with this drug.

However, you will experience such androgenic side effects as acne hair loss and possibly an adverse effect on cholesterol levels.

What is Primobolan good for?

Primobolan is most popularly used on a cutting cycle.

Its benefit over other anabolic steroids that bodybuilders use to get ripped is that it will maintain muscle mass while it cuts body fat.

It will encourage the body to burn stored fat for energy while retaining hard-earned lean muscle mass.

Compare to other options, this is a relatively safe anabolic steroid for cutting.

Is Primobolan suitable for beginners?

Yes, Primobolan is suitable for beginners.

In fact, if you are going to start with any anabolic steroid on a cutting cycle, this is probably the one you should go for.

That’s because it is the mildest and has the least severe side effects.

Is this a tablet or an injectable anabolic steroid?

Primobolan is one of those rare types of drug that can be taken in either tablet or injectable form.

In injection form, it only needs to be administered two times per week.

In tablet form, it only needs to be taken once per day.

Where can I buy Primobolan?

Even though this is a very popular steroid for cutting, it is also one of the hardest to locate.

Getting high-grade versions that are safe to put into your body is even harder.

The anabolic steroid market is completely unregulated due to it being illegal, so there is no way of knowing if what you are getting is the real deal.

The market is rife with low-quality counterfeits. A single dose of this anabolic steroid can cost around twenty dollars.

Wrap Up

Primobolan is a popular anabolic steroid that carries far fewer side effects than most other steroids. It is an effective cutting agent that will also ensure that you preserve your hard-earned lean muscle mass as you strip off body fat.

You don’t have to worry about such problems as water retention or gyno when you take this steroid, either.

It’s a smart choice for beginners due to its generally mild nature and lack of estrogenic side effects.

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

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Ernst Peibst

Ernst Peibst | Writer

Ernst Peibst is an expert in anabolic steroids and PEDs with over 3,000 hours of research. He's been educating people for 7 years through his articles, written after studying science papers, expert books and consulting top doctors in the field. He is a former bodybuilder and creator of multiple fitness websites.

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2 years ago

Hi there,

I have a question and really be happy if you can help me.
I did my first cycle with anavar/primo orals, for 9 weeks,
week 1 10mg per day anavar/25mg per day primo
week 2-8 20mg per day anavar/50mg per day primo
week 9 same as week 1
what I’m looking for is the PCT program. I’m 39 and working out for almost 7 years in a row.

Thanks in advance

M Lande
M Lande
1 year ago

I’m wondering if you would recommend anavar or primobolin or both at what cycle to promote muscle healing

Daniel Louwrens BSc PT
Reply to  M Lande

All Anabolic Steroids will improve muscle recovery, however, the 19-Nor family is known to be better than others (Deca, NPP, etc)

M Lande
M Lande
1 year ago

I’m wondering if you would recommend anavar or primobolin or both at what cycle to promote muscle healing

Chemical Structure

Mechanism of Action

Primobolan is an orally active anabolic steroid that binds to and stimulates Androgen Receptors in the muscle tissue. It increases the protein synthesis in the muscle cells.

Class of Compound


Street Names

Primobolan S, Primonabol, Nibal, Methenolone acetate


  • Promotes lean muscle growth
  • Increases endurance
  • Improves recovery time

Side Effects and Dangers

  • Hair loss
  • Liver toxicity
  • Testosterone suppression

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