First discovered in 1967, tren was originally created for veterinary use, being injected into cattle approximately six weeks before slaughter. The enhanced ability of trenbolone to synthesize protein allowed the animals to pack on muscle and bulk very rapidly.

However, the possibilities that tren offered for humans was also identified and the drug was marketed by Roussel AG from Germany until the 1980s. At that time, two out of the three possible variants of the drug were removed from the human market, with the third one following suit around a decade or so later. The FDA never gave it formal approval for use on humans.

Trenbolone is now only available officially as a veterinary medication, to bulk cattle which are intended to be slaughtered for their meat. Some suggestions have been made to reintroduce tren back as a pharmaceutical product because of the benefits to humans, but to date the FDA have not approved any such use.

Finaject and Finaplix were two of the brands which tren was originally sold under, the latter being a form of cattle pellet. Users dissolved the pellets using kits which were widely available to convert them into an injectable form of tren. Although this was popular and economical, infections and abscesses often resulted because the method wasn’t sterile. Neither of these forms of tren have been available since 1987.

Although tren is a derivative of nandrolone, it is a unique compound because it is available in three different esters. These are:

• Trenbolone acetate
• Trenbolone enanthate
• Trenbolone hexhydrobenzylcarbonate

The latter is most commonly known as Parabolan and although it remains a variant of Tren, is often regarded as a separate entity. Therefore, this article will focus on the first two forms of Tren, acetate and enanthate.

Can Tren be taken on its own?

Trenbolone is a compound which is five times more androgenic and anabolic than testosterone, so while it’s great to include in a stack, it can be used on its own as well.

And because of the potency of tren, you will have the added advantage of not needing to run a test tren cycle to give it a kickstart (although they do still work well together). However, if you don’t opt for a test and tren cycle, metsterolone or similar should be taken, along with the proper PCT to avoid problems with libido and low testosterone.

a picture of a 10ml vial of trenbolone acetate

Although tren acetate or enanthate don’t need to be used in a stack, most users prefer to do so because the results are superior with far fewer trenbolone side effects.

Stacking info

Stacking can be a particularly beneficial way to take tren, because of the high risk of side effects. By stacking them together, a lower dosage can be taken which minimizes the possibility of tren side effects occurring but maximizes the benefits.

Stacking tren with another anabolic steroid has an accumulative effect rather than merely additive. In other words, 50mg of tren acetate stacked with 50mg of dianabol will have a far greater effect than just 100mg of either drug.

If tren is stacked with drugs such as masteron or primobolan, it isn’t the result which is enhanced but the side effects which are reduced. This kind of stack allows users to tolerate tren, when otherwise the side effects may be too much to be able to continue.

How it is administered

Tren isn’t widely available to be taken orally; users usually inject the steroid intramuscularly for it to take effect.

In the past, conversion kits were available to extract the tren from the cattle pellet form but this carried the risk of infection. There is now no longer the need to do this as powdered tren can be purchased from the black market so users can create their own preparations.

Vegetable oil is one of the most frequently used carriers; this should be used in the ratio 50mg/mL. Solutions of a greater concentration than this carry a higher risk of developing the well-known tren cough reaction. It is possible to purchase pre-prepared solutions of tren at a greater concentration; these appear to carry less of a risk than home-prepared solutions.

If you buy trenbolone online, you may find it available in tablet form. Oral trenbolone is available as a supplement but it’s a problematic route of administration as it’s broken down by the liver. This can make the trenbolone price rocket because a large quantity of tablets must be taken every day just to retain a small fraction. This is a far more wasteful route because to achieve the desirable trenbolone effects as many as 12 tablets per day may be required.

Because it’s difficult to be certain about how much of the drug is reaching the blood stream when taken orally, the tren cycle results from an injectable form tend to be superior.

Dosage info

Trenbolone enanthate is around 20% less active than trenbolone acetate, and this needs to be taken into consideration when administering the steroid.

Because of its slightly weaker action, trenbolone enanthate is normally dosed higher than acetate to maximize the response.

The dose for both enanthate and acetate is extremely low when compared to other types of anabolic steroid but this is because tren is such a potent anabolic steroid.

The weekly enanthate dose is usually between 300-800mg, split over a number of injections, typically 2-4 times a week.

Acetate is normally injected daily, with each dose ranging from 35-150mg. The usual dosage for optimal results is 50-75mg per day. 150mg per day is not normally necessary for optimal muscle growth or strength; this can be reached on around 100mg per day. The top dose of 150mg daily is usually taken for stimulation of the nervous system only.

The lowest dose of 35mg is usually taken when the individual has concerns about the potential side effects. In these cases, tren can be stacked with another injectable steroid such as masteron, although testosterone can also be a useful alternative.

Half-life info

The half life of tren is slightly more complex than some other types of anabolic steroids because it is available with three different esters.

The base hormone has a half life of approximately 6-8 hours but this is largely irrelevant as an ester is attached before being taken. The type of ester attached to the tren will determine the length of the half life.

Acetate has the shortest ester which means that this variant of tren is the fastest acting, but also leaves the body the quickest. The half life of acetate is 48 hours, and if no repeat doses are administered, it will be eliminated completely within just a few days. This makes a tren acetate cycle a useful option for those concerned about side effects.

Enanthate has a longer acting ester, giving a half life of 5-7 days. This can be more convenient, meaning the drug needs to be administered less frequently but for those concerned about the side effects, the time taken to clear the body may be less than ideal. A trenbolone enanthate cycle is not ideally suited to those who aren’t sure how they will respond to the steroid. For those new to the drug, it’s therefore better to buy tren in the acetate variant rather than risk the longer acting trenbolone enanthate side effects.

The third tree variant, Parabolan, has the longest acting ester of them all, with a half life of 8-10 days.

Positive effects

Trenbolone is a member of the strongest group of anabolic steroids so the potential gains are many and varied.

Bodybuilders and other athletes will see a number of different benefits after taking tren, both in their performance and with their overall appearance and muscle definition.

The steroid increases the red blood cell count, which in turn helps to bolster performance by delivering greater amounts of oxygen to the body. It also has a direct impact on fat burning while simultaneously helping to build body mass and enhance muscle growth. It achieves this via superior nitrogen retention and also improved protein synthesis.

Cellular repair can be up to 10 times higher when Trenbolone is being taken, another way in which the steroid can help to boost the rate of growth.

As well as the benefits to humans, Tren is also used for livestock too. Known as feed efficiency, trenbolone is given to cattle to produce larger and more muscular animals.

All of the above benefits can be gained from any trenbolone cycle, with trenbolone enanthate results and tren acetate results broadly similar.

Potential side-effects

As an extremely powerful anabolic steroid which delivers top class results, Tren doesn’t come without the risk of a series of side effects.

Androgenic effects

More powerful than testosterone and derived from nandrolone, Trenbolone has very strong androgenic effects. This may offer certain rewards but also attracts much greater side effects including:

• Oily skin
• Male pattern baldness
• Acne
• Increased risk of an enlarged prostate
• Increased bodily hair
• Aggression

The latter may not always be a negative effect; much can depend on the individual and how they’re able to handle the change in mood.

The particular difficulty with Trenbolone is that the usual 5-alpha reductase inhibitors which are taken with other androgenic steroids, such as Finasteride, Proscar and Propecia will be ineffective. This is because Tren has zero interaction with the 5-alpha reductase enzyme, possessing a sufficiently strong androgenic effect on its own.

Estrogenic effects

Trenbolone does not react with the aromatase enzyme, which means that it has no estrogenic activity.

However, this doesn’t mean that users escape the typical side effects which are so undesirable because it binds very strongly to the Progesterone receptor instead. In addition, the levels of prolactin within the body can also be increased by tren.

This means that symptoms typically associated with estrogen such as gynecomastia, swollen nipples and bloating can still occur. Aromatase inhibitors and anti-estrogens can be somewhat effective, channeling through the progesterone receptor instead of the normal route. These won’t reduce the level of prolactin so 600mg of B6 daily can be taken instead. Alternatively, anti-prolactin medication such as bromocriptine and cabergoline can achieve the same result.


As might be expected for such a potent steroid, the effect on the cardiovascular system can be significant.

As well as raising the blood pressure, Trenbolone has a negative effect on cholesterol too. LDL cholesterol is increased while the healthy HDL is lowered, creating not just a higher total serum cholesterol, but a far worse LDL:HDL ratio.

Hair loss

As seen above, tren is an extremely androgenic anabolic steroid which means that it carries a substantial risk of male pattern baldness. As with any anabolic steroid, if the individual carries the gene for this, tren could trigger the start of hair loss which may be irreversible. Stopping the steroid will prevent any immediate ongoing hair loss but won’t restore that which has already occurred.

Liver toxicity

Although the side effects of trenbolone can be more severe in other areas, the hepatic toxicity is less of a concern.

This is because tren is not a C17-alpha-alkylated anabolic steroid, allowing it to escape the most adverse effects. Nevertheless, like all other anabolic steroids, tren has the potential to cause liver damage, particularly with prolonged use so regular liver function tests should be performed.

Other effects

Tren is one of the most notoriously difficult steroids to take due to the potential side effects which can occur. In addition to all of the above, nutrition partitioning can occur which causes low blood sugar. This manifests as fatigue, insomnia, impatience and irritability. To combat this, carb intake should be spread out and glycogen tablets can be taken too.

Dehydration can also be a problem so fluid intake should be increased. At least three glasses of water prior to bedtime is recommended.

In some individuals, coughing spells and shortness of breath have been caused by Trenbolone. This occurs in less than 1% of users and is thought to be a reaction to the oil used to inject the steroid. Coughing fits vary between mildly irritating and severe, but typically last no more than a couple of minutes.

A minority of users report some ongoing shallowness of breathing and a lower cardiovascular tolerance.

No mortality issues connected to the coughing or breathlessness have been identified.


Although tren is widely considered to be a steroid which can be particularly difficult to tolerate for some, there are other cases where the use of it is completely contraindicated.

Anyone with a history of any of the following should seek medical assistance before taking it:

• Prostate cancer
• Benign prostate tumors
• Breast cancer (men or women)
• Hardening of the arteries or cardiovascular disease
• Nephrotic syndrome
• Prostatitis (chronic or acute)
• Impaired renal or hepatic function

It’s also not recommended for pregnant or lactating women.

Is it best suited to cutting, bulking or both?

Out of all of the non-estrogenic steroids, tren probably offers the greatest possibility for pure muscle building, making it a possibility for bulking cycles. However, when compared to certain other steroids such as Anadrol or Dianabol, the results are relatively modest.

But when tren is used in a cutting cycle, the results are almost unparalleled. Used extensively as a sculpting agent, trenbolone produces a lean and hard appearance and for this reason is often used pre-contest in a stack.

Is it safe for women to use?

With Trenbolone, the risk of virilization occurring is so high that it’s not recommended for women even in small doses.

Any female who takes Trenbolone is at an extremely high risk of developing side effects such as a deeper voice, enlarged clitoris, changed menstrual cycle and growth of body hair. These effects can become permanent if the steroid intake isn’t immediately ceased.

Type of PCT needed after the end of the cycle

As a very strong anabolic steroid, PCT is essential following a course of tren. This should last for a minimum of a month to give the body time to return testosterone production levels to normal.

Aromatase inhibitors plus Clomid or Nolvadex (SERMs) are usually used for PCT. These are the most important elements of PCT as they will help your body to naturally recover its own production of testosterone. However, some users also add in certain supplements which are purported to be beneficial to the liver or hair as an extra means of recovery.

When you buy trenbolone it’s a good idea to make sure you have the necessary PCT ready so you don’t run the risk of not being able to purchase it when you need it. Even if you run a tren and test cycle, PCT is an essential part of minimizing long term damage.

Typical cost

It’s not possible to purchase pharmaceutical grade tren for human use but veterinary grade can still be sourced.

For acetate expect to pay around $50-75 for 10mls of veterinary grade tren, while enanthate costs a bit more: $75-150 per 10mls.

If you’re purchasing from an underground source, acetate costs $40-60 per 10mls and enanthate costs $70-100 for the same quantity.

For the results it achieves, tren is widely considered to be an economical anabolic steroid which is easily procured.

If you’re wondering “where can I buy tren?” there are different options to consider. The black market will have a steady supply, making it easy to buy trenbolone acetate or enanthate from underground sources. Trenbolone for sale is readily available both in the powdered and pre-prepared solutions but an alternative is to purchase it from a veterinary supplier where both enanthate and trenbolone acetate for sale can be easily found.

Sports that use it

Sports which require strength and muscle, such as bodybuilding and power lifting will find trenbolone provides a great many benefits.

However, if there’s an accompanying need for cardiovascular fitness, the use of tren may prove to be counterproductive. For this reason, then is used more by the bodybuilding community than within other sports.

Legality of purchase and its usage in the US

Like other types of anabolic steroids, Trenbolone is classified as a Schedule III drug. The drugs which fall into this category, including anabolic steroids, are considered by the Drug Enforcement Administration to carry a high risk of psychological dependence and a moderate risk of physical dependence. For this reason, they are a controlled substance.

Trenbolone is legal to possess for veterinary use but if an animal supply is instead used in humans, it will be considered a breach of the law. Even possessing a Schedule III drug without a valid prescription carries a hefty penalty: a fine of at least $5000 and up to three years in jail. For those considered to be distributing and trafficking the drug, the prison sentence can be extended to 30 years and the fine up to $5 million.

In the US, the law does not allow for a small amount of tren to be possessed for personal use. Any amount of tren is illegal and the individual may face prosecution.

However, the US has a notoriously tough stance on the possession and use of anabolic steroids and in other countries around the world, tren can be bought and used legally. The UK is one such country.

For these reasons those that want to run a tren cycle typically opt to buy tren online where it can be found from multiple sources. Caution should always be exercised as this is a very potent steroid which is more suitable for experienced athletes looking to enhance their regime.


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