What is Trenbolone Enanthate?

Trenbolone Enanthate 

Trenbolone E, commonly referred to as ‘Tren E’ is probably known as one of, if not, the most potent muscle building steroid on the market. Tren users expect huge increases in strength and lean muscle gains on cycle.

The enanthate ester is similar to Test E in terms of its release. There is an initial spike within the first few days which then starts to decline over a couple of weeks. Most users will inject Tren E twice per week to keep levels stable.

Trenbolone has an androgenic and anabolic rating which is 5x higher than testosterone. Even so, users rarely report estrogenic side effects while on cycle. However, managing progesterone can be a whole other issue. 

New users can expect to see significant gains in strength across all lifts and huge increases in lean muscle mass, hardness and definition.

Tren does have its downsides, though. It can have negative impacts on mental state and many people report little to no appetite while on cycle.

Androgenic Rating: 500

Anabolic Rating: 500

Genesis Tren E side effects
Genesis Trenbolone Enanthate


Trenbolone enanthate is often supplied in vials of 100mg. Depending on the country of origin, you can also find it in 200mg/ml dissolved in a carrier oil. 

Tren is not available as a pharmaceutical-grade or veterinary grade product. Any tren on the market is manufactured by UGLs.


How much does Tren E cost?

Tren is one of the more expensive steroids on the market. The cost of the raw powder to manufacture is much more than that of testosterone or deca. The price of tren can vary from lab to lab.

An average price range for purchasing from an underground lab can be from £35 per 10ml vial up to £60.

What Does a Tren E Cycle Look Like?

Tren E is usually used by athletes who are after gaining strength or lean muscle. The effects tren has on the muscle and ‘look’ of a person make it the perfect drug of choice for someone in a cutting phase or pre-competition.

Tren E is usually run for around 12 weeks, maximum. It should be noted, though, not many people can tolerate the negative impact on appetite and mental health tren users often report. 

Typically Tren cycles run at around 200 – 400mg per week. This is enough to see significant gains in strength and size.

For anyone wanting to run shorter cycles then trenbolone acetate is the shorter acting ester, and more favourable for some. 

It is also very rare to see tren run solo. Running testosterone alongside tren has been reported to negate some side effects, many people have also reported running higher tren to testosterone to further reduce side effects.

As with anything to do with performance-enhancing drugs, not everything works for everyone. It is important to listen to your body and see what works for you. 


Beginner Tren E Cycle

Weeks 1 – 12

  • Monday 1 x 250mg test / 1 x 150mg tren e
  • Thursday 1 x 250mg test / 1 x 150mg tren e
  • AI (Aromatise inhibitor)
  • Weeks 12 – 14 PCT

More Experienced Tren E Cycle

Weeks 1 – 12

  • Monday 1 x 250mg test / 1 x 200mg tren e
  • Thursday 1 x 250mg test / 1 x 200mg tren e
  • AI (Aromatise inhibitor)
  • Weeks 12 – 14 PCT

Advanced Tren E Cycle

Weeks 1 – 12

  • Monday 1 x 500mg test / 1 x 250mg tren e
  • Thursday 1 x 500mg test / 1 x 250mg tren e
  • AI (Aromatise inhibitor)
  • Weeks 12 – 14 PCT

How To Inject Trenbolone Enanthate

For a step by step guide on how to safely inject Tren E please see this article ‘How to inject steroids safely’.

Tren side effects
British Dragon Tren E

What Are The Side Effects of Trenbolone E

Any drug can have side effects and steroids are no different. Side effects of Trenbolone can come in various forms and are usually more prevalent for people who run continued length cycles or use more substantial doses.

Side effects from steroids can affect the cardiovascular system, estrogenic and androgenic.

When using anabolic/androgenic steroids, it is essential to understand the risks associated with the use and also how to minimise the chances of them occurring. 

It is important to note that not everyone will experience side effects from steroids. It is essential to know and understand the risk associated with them, though. 

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

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

Androgenic Side Effects Of Tren E

Trenbolone has a strong androgenic rating. As such, side effects can be more pronounced on cycle than many other steroids.

Tren can cause large breakouts of acne, especially on the back, oily skin and increased growth in body and facial hair. There is also the possibility of progesterone increasing which can cause gynecomastia.

Trenbolone is also notorious for reducing libido in men. Many users report softer erections or the inability to climax while on cycle.

Estrogenic Side Effects

Technically speaking, trenbolone isn’t aromatized by the body and doesn’t raise estrogen levels. However, when running alongside testosterone or another compound which can aromatize progestional side effects can become much more pronounced, which can lead to similar side effects.

Progestional side effects of trenbolone can include water retention, an increase in body fat and gynecomastia. The raise in progesterone is also related to the inability to climax and softer, or weaker erections.

If you suffer from these effects using compounds such as Cabergoline can help to reduce and stop them.


Cardiovascular Side Effects

Although using tren users do not often report much water weight. The additional weight gained in short spaces of time and can result in added strain on the heart and organs.

Tren is notorious for affecting cholesterol levels by reducing HDL or ‘good cholesterol’ and increasing LDL ‘bad cholesterol’. This shift, over time, can result in the hardening of the artery walls and higher levels of fat in the bloodstream leading to strokes, or heart attacks if left unchecked and untreated.

The increase in muscle mass and weight can also lead to higher blood pressure which can again, affect the heart and kidneys.

Running Tren can also affect your blood ‘thickness’. 

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 not only allows you to know what is going in regards to your health but also make any necessary adjustments before starting.

Does Tren affect the liver?

Trenbolone is generally unlikely to cause liver damage. It is important to note, though, with its strong androgenic and anabolic rating it has been noted that trenbolone does have a stronger resistance to being broken down in the liver.

High dose cycles or prolonged cycles could push liver markers beyond normal levels.

Natural Testosterone Shutdown 

Using any form of steroid will lead to the suppression of your natural test production. This often returns after the cycle has stopped. In rare cases or when users have been on cycle for prolonged periods, people can be shut down permanently or suffer from low testosterone levels for many years.

PCT ancillaries such as HCG can help keep the testes stimulated and producing natural testosterone. It is usually taken as a part of a PCT (post cycle therapy).

Tren Mental Side Effects

Many users report the side effects of using tren. Including feeling depressed, anxious and on edge. It has been noted that users can feel quite ‘emotionless’ and ‘distant’, with people reporting feeling back to ‘normal’ after stopping the cycle.

If you suffer from pre-existing mental health conditions it may not be a good idea for you to use tren. If you decide to use it any way you should monitor your day to day thoughts and state of mind to judge whether you should continue to use or stop. 

Benefits of using Tren E

  • Notorious mass and strength builder
  • Unbeatable lean muscle gain
  • Increase in muscle density and hardness
  • 5x more potent than testosterone

FAQs on Trenbolone Enanthate

How long does trenbolone enanthate take to kick in?

Oh, boy oh boy. Trenbolone enanthate usually starts peaking around weeks four onwards. Now, as you may not know any steroid will start to work straight away. People often confuse this because they don’t start to see or feel different until the hormone has hit peak levels.

For tren, though, people will often start experiencing a more focus approach to training and significantly improved pumps from around weeks three onwards.

Which is better Tren A or Tren E?

Good question! Tren E is better used for longer cycles due to the fact it requires pinning less often. Tren A is more often used in shorter cycles as the pinning frequency is three times a week and this can be a little daunting for some people.

Either way, you should experience a similar level of gains between the two.

Can you run a Trenbolone only cycle?

Technically speaking there isn’t a reason why you can’t run a tren only cycle. The question you need to ask yourself, though, is should you? Tren is a serious compound and like most steroids, you will see significantly more gains when running alongside testosterone.

Can you inject Tren E once a week?

Yes. Tren can be injected once a week. Users prefer twice a week dosing as it allows the jab to be split up instead of lumping in 2-3ml of tren plus whatever else you need to inject. Twice weekly injections also keep blood levels stable.

Whats better Tren or Deca?

Sticks and stones. Both have there merits and negatives. Tren will build lean gains, intense pumps, insane strength and is also a prefered pre-competition or cutting drug but comes with a host of side effects including mental.

Deca, on the other hand, is an all-out mass builder which add water weight as well as muscle tissue. It is great for joints and is a preferred offseason or bulking steroid.

Can I mix Trenbolone and Test in the same syringe?

You can mix most steroids in the same syringe. Have a look at the carrier oil which the steroid is dissolved in. If you’re buying from the same lab most of these will be the same and will mix together in the same syringe.

This is actually a great way to break down higher dosed steroids to reduce any swelling which may occur.



Trenbolone is often referred to as the ‘king’ of steroids and it has earned that reputation over and over again. Nothing comes close to the strength gains and levels of muscle density, hardness and lean growth.

It is important to remember tren needs to be treated with a level of respect. The impact it can have on mental health is very real and very notable. 

Trenbolone cycles are mainly run pre-competition. More and more people are using tren to improve their summer look and it is being used more and more in strength competitions.

There is little on the market which can replicate what trenbolone does, however, the trade-off for many may make it not worth their while. 




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