Parabolan: Uses, Dosage, Side-effects, Benefits, and Other Relevant Information



What is Parabolan?

Parabolan, also known as Trenbolone Hexahydrobenzylcarbonate, is an altered form of Nandrolone. It is a steroid with a different ester attached to it, and that’s the reason it is named as Trenbolone Hexahydrobenzylcarbonate or Tren Hex. Hexabolan is another name for Parabolan, but Parabolan is a widely known and used name. 

Vial Containing Parabolan

Hexahydrobenzylcarbonate ester is like Test E. There is an initial stimulation in the starting days which then declines over a couple of weeks. Many users inject Parabolan twice per week to maintain stability. Parabolans have extremely powerful anabolic and androgenic characteristics. It is popular among bodybuilders and athletes since it is beneficial throughout bulking and cutting cycles. It is an anabolic steroid based on Nandrolone, comparable to Trenbolone Acetate.

It is a long-lasting anabolic steroid with a slow-releasing ester, so users do not need to inject it frequently. Parabolan has a solid capacity to increase protein synthesis, nitrogen retention, and general strength, including muscular growth in users. It also boosts red blood cell synthesis and aids in rapidly eliminating body fat.

Parabolan is a flexible anabolic steroid that may assist users in reaching their bodybuilding goals, whether they are bulking up or reducing. 

Chemical structure

Chemical structure of Parabolan

Chemical Name: 17beta-Hydroxyestra-4,9,11-trien-3-one
Molecular Weight: 410.55 g/mol
Formula: C26H34O4
Half-Life: 14 days
Detection Time: 4 – 5 months

Why do bodybuilders use the Parabolan cycle?

bodybuilders usage of Parabolan 

There are several reasons why Parabolan is an excellent choice among bodybuilders and other muscle-building athletes. Here are just some of them:

  • This is an excellent steroid for bulking up and gaining lean muscular mass. It has anabolic characteristics that increase muscle protein synthesis, which means you may acquire a lot of size and weight even if you don't work out hard throughout your bulking cycle.
  • Lifting weights causes muscular fibres to break down and rebuild when you rest. This procedure gives greater room in muscle cells for adding new proteins. They also increase nitrogen retention, which speeds up protein synthesis and increases muscle mass even more.
  • In addition to boosting size and strength, it improves vascularity, allowing more blood to circulate into the muscles. 
  • Parabolan can also be used when cutting since it helps preserve lean muscle while burning fat. It is an excellent steroid for a rigorous training regimen and a tight diet.
  • Because of its significant androgenic qualities, Parabolan is also beneficial for immune system strengthening. This will keep you healthy while bulking up, allowing you to grow more muscle in a shorter length of time.
  • Because Parabolans can improve cardiovascular function, bodybuilders can rest assured that they will have the energy they need to train intensely during their cutting cycle.

What Does a Parabolan Cycle Look Like?

Athletes usually use Parabolan to gain strength or lean muscle. Para's effects on a person's muscle and .look' make it the perfect drug of choice for someone in a cutting phase.  The parabola cycle has a duration of 12 weeks, maximum. Many people cannot tolerate the negative effect on appetite and mental health.  

Beginner, Intermediate, and Advanced Parabolan Dosage

Most beginner steroid users are unlikely to choose Tren Hex or any Trenbolone steroid as their first choice because this is a steroid much more suited to more experienced users. However, if, as a beginner, you choose to give Tren Hex a go, it’s vital to start at a low dose and evaluate its effects, ideally in the range of 100mg to 150mg weekly.

Intermediate users will be looking at dosages of 150-200mg weekly, while advanced users can still achieve exceptional results at 200mg. Some of the world's most hardcore bodybuilders are known to up their dose of Parabolan beyond 300mg, and even up to 500mg per week in extreme cases, but this comes with a significant risk of side effects.

Parabolan Cycle

Beginner Parabolan Cycle

The Parabolan cycle for beginners is as follows:

Weeks 1 – 12

  • Monday: 1 x 250mg test / 1 x 76mg Parabolan
  • Thursday: 1 x 250mg test / 1 x 76mg Parabolan
  • AI (Aromatise inhibitors)
  • Weeks 12 – 14 PCT

More Experienced Parabolan Cycle

The parabolan cycles for more experienced people is as follows:

Weeks 1 – 12

  • Monday: 1 x 500mg test / 1 x 100mg Parabolan.
  • Thursday: 1 x 500mg test / 1 x 100mg Parabolan.
  • AI (Aromatise inhibitors).
  • Weeks 12 – 14 PCT.

Advanced Parabolan Cycle

The para cycle for advanced users is as follows:
Weeks 1 – 12

  • Monday: 1 x 500mg test / 1 x 150mg Parabolan.
  • Thursday: 1 x 500mg test / 1 x 150mg Parabolan.
  • AI (Aromatise inhibitors).
  • Weeks 12 – 14 PCT.

Parabolan - Only Cycle

Parabolan - Only Cycle

Parabolan Bulking Stack Cycle:

Parabolan Bulking Stack Cycle

Parabolan Cutting Stack Cycle:

Parabolan Cutting Stack Cycle

Parabolan Post-Cycle Therapy

Parabolan Post-Cycle Therapy

How To Inject Steroids in Muscles?

It is injected as an intramuscular injection. Many anabolic compounds on the market require an intramuscular injection, so it is safe.

Intramuscular injection of Parabolan

How to do it?

First, you need to find an injection site. 

  • No big blood vessels.
  • Big enough muscle to hit it.
  • Easy to reach.
  • The spot is hidden by your clothes 90% of the time

    Once you find the place, gather all the stuff you need
  • A syringe.
  • A needle (sometimes they come as one piece).
  • Disinfecting tissues with alcohol.
  • The steroid itself is in a vial.

    The next step is to open the vial and get the right amount of substance. Push the lever slowly until all the substance is in the muscle, take the needle out and disinfect the place.

How To Inject Steroids in The Fat Tissue

 Subcutaneously injection of Parabolan

Injections given subcutaneously are an excellent substitute for intramuscular ones. The objective here is not your muscular tissue but rather the thin layer of fat between your skin and muscles. It works best with "lighter" substances like peptides or SARMs, although it can also occasionally be effective with TRT or standard AAS cycles. The following steps will help you out on how to do it. 

1.  The safest (and most efficient) location is above your belly button.

2.  At a later stage, you must slightly pinch your skin to make it thick enough to accommodate a painless, accurate needle insertion.

3.  You don’t need to go deep in the tissue and change the angle to 45 degrees.

In every other aspect, subcutaneous injections are not that different from intramuscular injections.

What Are the Side Effects of Parabolan?

Steroids can have adverse effects, much like any other medication. Parabolan side effects can take many forms and are typically more common in users of prolonged cycles or higher dosages. Steroids' adverse effects might include an estrogenic, androgenic component and cardiovascular consequences. It is crucial to comprehend the hazards involved with using anabolic/androgenic steroids and how to reduce their likelihood of happening.  It is essential to remember that not everyone will encounter steroid side effects. However, it is crucial to be aware of and comprehend the danger involved. 

Once the athlete has finished the Parabolan cycle, the effect is long-lasting.

We can break down the side effects of Parabolan into the following subjects;

  • Estrogenic side effects
  • Androgenic side effects
  • Cardiovascular side effects
  • Hepatotoxicity
  • Natural testosterone shutdown
  • Mental

Androgenic Side Effects Of Parabolan

Despite being an anabolic steroid, Parabolan also has a high androgenic rating. As a result, cycle adverse effects may be more noticeable than many other steroids.

Like tren's, parabolan can result in oily skin, severe acne outbreaks, and a rise in body and facial hair growth. The chance of rising progesterone levels, which might result in gynecomastia, is also possible.

Another well-known impact of parabolan on male closeness is sex. While on the cycle, many users complained about weaker erections or an inability to climax.

Estrogenic Side Effects

Technically, the body does not aromatize parabolans, hence not increasing estrogen levels. However, adverse effects might become much more noticeable when combined with testosterone or another substance that can aromatize, which can result in comparable side effects.

Trenbolone's adverse effects might include gynecomastia, a rise in body fat, and water retention. The inability to climax and weaker, softer erections are also linked to increased progesterone. Using substances like cabergoline can help minimize and halt these symptoms if you experience them.

Cardiovascular Side Effects

Despite utilizing tren, consumers seldom report having too much water weight. The heart and other organs may become more stressed due to the extra weight accumulated quickly.

Tren hexahydrobenzylcarbonate is well known for its adverse effects on cholesterol levels, which include lowering HDL or good cholesterol and raising LDL or bad cholesterol. If left uncontrolled and untreated, this change over time can lead to the hardening of the arterial walls and greater blood fat levels, resulting in heart attacks or strokes.

Greater blood pressure can again impact the heart and kidneys, as can an increase in muscle mass and weight.

It is highly recommended for anyone thinking about running a cycle or who has already run one to get blood tests done at least every three months. This allows you to know what is going on regarding your health and make any necessary adjustments before starting.

Does Parabolan affect the liver?

Regardless of its ester, Trenbolone is usually unlikely to harm the liver. However, it is crucial to remember that trenbolone esters have better resistance to being broken down in the liver due to their strong androgenic and anabolic rating. Cycles with high doses or lengthy durations may elevate liver markers above normal ranges.

Parabolan Mental Side Effects

Users often report the negative effects of taking trenbolone esters, including Parabolan. Feeling gloomy, fearful, and tense. Users have reported feeling 'emotionless' and 'remote', with their feelings returning to 'normal' after terminating the cycle.

Using any ester of tren may not be a smart choice if you have pre-existing mental health issues. If you choose to use it in any form, you should keep an eye on your regular thoughts and emotional condition to determine if you should keep using it or cease. 

Natural Testosterone Shutdown 

Your average test production will be suppressed if you use any steroids. Frequently, after the cycle has finished, this reappears. Rarely, mainly when users have been on cycles for an extended amount of time, can users be permanently shut off or experience long-term low testosterone levels.

HCG and other PCT ancillaries can assist in maintaining the testes' natural stimulation and testosterone production. It is typically administered as a PCT (post-cycle treatment) component.

Benefits of using Parabolan

There are a lot of positive effects that can be achieved using Parabolan.  Some of them are listed below:

Increased vascularity:

More blood will be able to circulate through the body due to the impact of parabolan to improve vascularity in the muscles. This is perfect for cardio-exercising bodybuilders.

Increased energy: 

Parabolans have an energizing effect, which is why bodybuilders feel stronger. Additionally, they can work continuously without experiencing any exhaustion or depletion.

Accelerated protein synthesis: 

Parabolan can result in accelerated protein synthesis, leading to quicker muscle development. Increased endurance and rapid muscular growth are the outcomes.

Increased red blood cell production:

When Parabolan is utilized, more oxygen-rich red blood cells are produced, which enhances the body's performance during cardiac exercises. Additionally, you may perform more sets and repetitions without becoming overly exhausted since your muscles recover from exercises more rapidly.

Important keypoints to consider

Before taking Parabolan, you need to consider the following points:

  • The drug is taken at 75-300 mg per week. One steroid injection in 7 days will be sufficient before competition injections are made more frequently – 2-3 times a week.
  • Cycle length should not exceed 8 weeks since the drug may negatively affect the kidneys.
  • For beginners, this drug is not recommended. For a start, buying anabolics with weaker action is better. If you finally decide to take this drug, the maximum dose should not exceed 3 injections of 1 ampule per week.
  • This steroid is illegal for women due to the significant likelihood of masculinization.
  • A potential outcome which several other parabolan users have reported is an increase in lean muscle mass by upto 10kg’s.
  • The major proponents of this anabolic steroid are powerlifters and bodybuilders. This steroid has been in the blood for a very long period and is easily recognized by doping control.



Vial Containing Parabolan

 Trenbolone is sometimes called the "king" of steroids and has consistently lived up to that title. Nothing compares to muscular density, hardness, lean development and increases in strength. Many believe that because Parabolan was produced first and foremost by a pharmaceutical-grade facility, its purity and potency would be far more suited for usage and less likely to result in adverse side effects. Unfortunately, anyone using it will still likely experience the tren esters' negative effects. 

Unfortunately, anyone using it will still likely experience the tren esters' negative effects. Due to the expenditures needed, it is also improbable that any UGL would truly be producing Parabolan; instead, it is much more likely that Trenbolone Enanthate will be mislabeled as Parabolan.

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  3. Anand, J.S., Chodorowski, Z., Hajduk, A. and Waldman, W., 2006. Cholestasis induced by parabolan successfully treated with the molecular adsorbent recirculating system. ASAIO journal, 52(1), pp.117-118.
  4. W;, A. J. Z. A. (2023) Cholestasis induced by parabolan successfully treated with the molecular adsorbent recirculating system, ASAIO journal (American Society for Artificial Internal Organs : 1992). U.S. National Library of Medicine. Available at: (Accessed: 9 November 2023).
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