Deca Durabolin Vs Trenbolone – What to Choose?

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Deca Durabolin (often shortly called Deca) and Trenbolone (often shortly called Tren) are definitely among the most popular anabolic steroids in the world of bodybuilding. That’s because they are considered super powerful and extremely beneficial when comes to bodybuilding purposes.

In this Deca vs Tren review, we would share some of the most notable pros and cons of each anabolic steroid and would also compare them side by side and at the end of this article, customers may know which one of them exactly suits up their needs better and which to use. That’s because they should be able to know what to expect from using each of these powerful steroids.

The first thing to mention is that there is no better anabolic steroid than another from all points of view. If there would be an overall better steroid then the other one wouldn’t have been compared at all and wouldn’t be as famous. Both Tren and Deca are very famous and widely used. That’s because some people choose one, others choose another. It depends on what they need.

Balkan Pharmaceuticals offers Tren as Parabolan and Deca Durabolin as Decandrol of the highest quality for the lowest prices.


Each of these steroids are having different attributes and properties and based on them you can decide which one is better suiting with your ultimate goals. Same goes for all steroids that you find to be very famous, as they are all different.

There are lots of other steroids than those considered “famous” and the reason why they are not as famous and widely used, is because they are indeed not as helpful. All the rest are good, they just come with different attributes for different people.

That’s the reason why everyone separately and individually is having a different opinion as to which steroid is the best. Is a matter of preference and goals. Some people love Ford, others love BMW. Some people love football, others love basketball – is all a matter of preference.

Other than that, is important to remember that people are reacting differently to each steroid, as they do on each medication. When talking about steroids specifically, Anadrol is considered the best muscle builder in existence, however, there are people who don’t love it, they are responding well to other compounds.

So keep in mind, is highly unlikely you would see a conclusion that this or that is overall better in this Deca vs Tren review.

Deca Durabolin vs Trenbolone – What are the Differences?

In fact, Deca Durabolin and Trenbolone are actually very different steroids. There are other steroids that seem to have much more in common (like Anavar and Winstrol) than these 2. Nonetheless, they are still having some similarities, let’s check them first.

The first thing to mention is that both of these steroids are injectable AAS and they are mainly used in bulking cycles when the main goal is to build as much muscle mass as possible and to pack on size. However, other than that, there are very few and small similarities between them, although both being steroids.

For example Deca Durabolin is exclusively used in bulking cycles, I don’t see how someone would use it in cutting cycles. But Trenbolone is very widely used and famous in cutting cycles. Some people use it exclusively only for cutting.

Other than that, Deca Durabolin is still a FDA approved steroid. It can be given as a prescription to a patient that is suffering from various conditions, like for example for the treatment of anemia but there are various others too. With this being said, it proves the fact that Deca Durabolin is still quite a safe and mild steroid in terms of side effects.

Just to give an example – there are a lot of different steroids that were banned by FDA and they are not being prescribed to patients anymore, and that’s because according to FDA, they are able to offer way too dangerous and unpleasant side effects.

Trenbolone (Acetate, at least) was never approved to be used in humans. This steroid was intended (and is still used this way) to help cattle to bulk up. With this being said, Trenbolone was always seen as a dangerous steroid by FDA and that’s why is quite obvious that is not as safe as Deca Durabolin is, at very least, from medical point of view.

Common Gains

Very well, is quite obvious that searching for anabolic steroids (especially bulking ones) we’re searching for gaining as much muscles as possible. Tren, for example, is an extremely versatile AAS as it great at helping users to both gain a huge amount of lean muscle mass during the time they are bulking up, and in the same time they are very effective when talking about cutting cycles as it helps to burn fat too.

According to people who already used Trenbolone, a cycle with this ridiculously powerful compound is going to help them gain about 20 lbs of pure muscles in the off season.

  • Trenbolone is overall much powerful, when analyzing the numbers on paper, than Deca Durabolin. For example, the anabolic to androgenic ratio of Trenbolone is 500:500 whilst Deca Durabolin is 125:37. Just imagine the potency of Trenbolone over Deca. But there are various others factors that should be taken in consideration.

As said, Tren can be used in a cutting and hardening cycle (is often considered by many people the best steroid for cutting) and that’s because it was proven to greatly speed up the fat burning processes and in the same time, it allows the user to increase muscle retention and that’s even if you’re eating few calories a day.

According to the studies done, Trenbolone is having such powerful fat burning abilities because it is extremely powerfully androgenic and the androgen receptor (AR) is very helpful at inhibiting the fat storage processes and also to get rid of the one that is already deposited, as well as promoting fat loss in adipose tissue.

But in contrast we have Deca Durabolin (Nandrolone Decanoate) which is used exclusively only in bulking cycles because is not very suitable with cutting needs and plus to that, is considered to have quite mild effects if attempted to be administered solo. That’s why in most cases you’re going to notice that Deca is stacked with other steroids.


Generally, using Deca alone by itself is extremely rarely, you won’t find professional bodybuilders doing so, however, you very often might find various different people stacking Deca durabolin with various other bulking steroids for receiving amazing effects. That’s because doing so, it would highly enhance Deca’s effects from strength and muscle improving point of view.

Deca alone is not very helpful, but when stacked with other steroids, it was proven to offer an extremely powerful synergy effect and therefore it would offer a very thick and powerful look whilst the intracellular fluid is going to be filling the muscles, and would also increase the lean muscle mass and strength. You would get both bigger, more muscular and more powerful.

Anyway, as much as we can notice, Trenbolone is considered a better steroid for muscle building than Deca, especially if used alone, and is much better for burning body fat.

Fast vs Slow Gains

  • Trenbolone is coming in 3 various forms – Acetate, Enanthate and Hexahydrobenzylcarbonate (Hexa) but the most famous and widely used one is also the shortest form – Acetate. This means that it would enter the blood system, build up in the system and then get flushed out much faster.
  • Deca Durabolin is actually Nandrolone Decanoate which is the long form of Nandrolone and is also the most famous form of Nandrolone – vice versa from Trenbolone. There’s also Durabolin also containing Nandrolone but with Phenylpropionate ester – much shorter than Decanoate.

Nandrolone Decanoate (Deca) is a lot much famous and widely used than Nandrolone Phenylpropionate (NPP) is a much longer version of steroid, as mentioned is the other way around compared to Trenbolone because Deca is entering the system much slower compared to NPP.

With this being said, comparing the most famous versions of these steroids – Trenbolone Acetate is going to be a very fast acting steroid as it has a short ester, but Deca Durabolin (Nandrolone Decanoate) is going to be a very slow acting steroid with a very long ester.

Therefore, the results are going to be noticed much faster on Tren compared to Deca which works much slower as it requires a while to build up in the system and kick in. That’s why cycles with Deca are usually much longer compared to those of Tren.

As an example, side effects of Tren are usually getting way too bad starting from the week 6 or so. That’s why, Trenbolone cycles are usually no longer than 6-8 weeks. In retrospective – Deca Durabolin cycles are lasting for about 14 weeks.

A big advantage of Deca over Tren in terms of half life is the fact that Deca should be administered (intramuscularly injected) much less frequently than Tren. In the time, that Deca Durabolin is used only once per week, Trenbolone Acetate should be administered on a daily basis.

Which One Affects Your Heart More?

By checking the potency of each steroid that was mentioned earlier, I assume everyone can guess which one of them is going to be worse for your heart (affecting it more).

According to the numbers on paper and to customer reports as well as researches done on Deca Durabolin (Nandrolone Decanaote) this is quite a mild steroid which is not offering too dangerous and bothering side effects.

Cardiovascular negative effects is something that is a really big problem with steroids and something that should be taken very seriously in consideration.

With this being said, Deca Durabolin seems to be the second best anabolic steroid out of all of them when talking about maintaining blood pressure in the normal range (losing the first place to Testosterone).


According to the researches done on Deca which involved pretty high doses of 600 mg per week taken for a long time – 10 weeks cycle, it has only caused a 26% decrease in the HDL (good) cholesterol.

Bodybuilders use dosages anywhere around 600 mg per week. They are cycling anywhere between 200 up to about 800 mg per week and cycle lengths are anywhere between 10 and 14 weeks or so. With this being said, HDL cholesterol levels with Deca would reduce anywhere between 20 and 40% or so, something that’s much better compared to other steroids.

On the other hand we have Trenbolone Acetate that is considered one of the harshest steroids on the market (the reason why it never got FDA approved) and anyone used it reported that the blood pressure skyrockets on it.

As much as it seems from the researches – this is due to toxicity of Trenbolone combined with no aromatization. Very often, a lot of bodybuilders assume that no conversion into estrogen is only a positive thing because it prevents estrogenic side effects but that’s wrong.

Whilst too much estrogen is bad, too little estrogen is bad too as estrogen helps to protect heart and increases HDL (good) cholesterol. Is obvious that blood pressure would spike without enough estrogen. On the other hand – Deca Durabolin (Nandrolone Decanoate) does aromatizes and converts into estrogen.

Therefore, estrogenic side effects are much more likely to occur on Deca than on Tren: gynecomastia, water retention (bloating) and many more related to estrogen can occur. However, you’re still very unlikely to get estrogenic side effects on Deca. More about this later.

Androgenic Side Effects

As it was earlier said – Trenbolone is ridiculously highly androgenic, but Deca androgenic activity is very low. As said, the androgenic rating of Tren is reaching the huge number of 500, but Deca’s number is only 37 (whereas Testosterone androgenic rating is 100).

Only by reading the numbers, I guess is quite obvious which one of them is offering more and worse androgenic side effects.

While they are possible to occur on Deca, but fairly unlikely in normal dosages, they are extremely common on Trenbolone. Acne, aggression, hair loss, oily skin are only a few to name.

With this being said, if you’re worried about male pattern hair loss, or you’re having or prone to have acne issues, then Tren is going to be one of the worst steroids that you can use while Deca is going to be one of the best due to its low androgenic activity.

Taking in consideration that Tren is so highly androgenic, there’s also a specific effect – users on Trenbolone Acetate will notice that their shoulders and traps are going to blow up much more than other muscle groups and that’s because the traps and shoulders are having more androgen receptors than other muscle groups.

This is specific to most steroids, but with Deca, the shoulders wouldn’t pop up as much as with Tren, they would grow, but in relation to the rest of the body. Trenbolone users are easy to spot because of their artificially looking shoulders and traps.

Gynecomastia (Gyno)

Trenbolone does not aromatize at all, but Deca (Nandrolone) does aromatize a little bit, however according to research, the aromatization is thought to be only 20 % compared to the aromatization of testosterone. That’s why, Trenbolone is going to offer an extremely dry look, while with Deca you would still be able to get a drier look, but is still going to be somewhat puffy due to aromatization.

Gynecomastia (Gyno) or also known as man’s boobs, and this is a common side effect when a steroid is aromatizing and is offering estrogenic activity. That’s why, this side effect is capable to occur when administering Deca Durabolin, but is also likely to occur when administering Trenbolone Acetate too.

Many people think that gyno won’t happen with Tren since it cannot aromatize and unlikely to happen with Deca since it doesn’t aromatize very much – that’s wrong.

Both compounds can offer gynecomastia, Deca due to aromatization and increased progesterone levels, Trenbolone due to high progesterone levels – which are working similarly to estrogen. Is important to remember that high progesterone levels are capable to offer breast tissue to form similarly to that of estrogen, that’s why gynecomastia is possible.


If you’re stacking any of these compounds with other progesterone increasing steroids or those increasing estrogen, the chances of getting gyno are even higher.

This is the reason why very often, when administering compounds that can offer gynecomastia, they are used with ancillaries. Anti estrogen medications are added for preventing the apparition of gynecomastia.

Testosterone Suppression

These are both anabolic steroids and is quite obvious that they are capable to suppress natural testosterone production. With this being said, both Deca and Tren would shut down your testosterone levels.

Despite the fact that the suppression might be less on Deca since is milder than Tren, it would still occur and it would still require a Post Cycle Therapy (PCT) protocol for recovering back your natural testosterone production. It would take months or even years to recover them back without a PCT, but it would require only some weeks for the levels to return back to normal after a cycle.

Most often, a good PCT consists of Nolvadex and/ or Clomid.

Important: Suppression of testosterone is a serious side effect and is very common with absolutely all steroids – almost always being very bad. Even the mildest ones like Anavar and Primobolan are recommended to be followed by a PCT.

Psychological Side Effects

Psychological side effects are possible on both compounds, pretty much as with any other steroid out there, however, it does looks like they are worse on Trenbolone, taken in consideration that is a more powerful one.

In fact, the psychological side effects is something that most people don’t pay attention to, and that’s a huge mistake as they can be almost as bad as the physical side effects. Increased aggression is common on Trenbolone, but there are cases when a person would experience irritability, anxiety, paranoia and general changes in thoughts and behavior.

It was discovered that Tren is going to stimulate the nervous system of the user, and this is going to offer a spike in adrenaline while this can offer euphoria, it is also able to give nervousness, aggressiveness etc. Because of the spike in adrenaline, it seems like insomnia is quite a common side effect with Trenbolone.

Reduce the dosage of Tren in case any side effects are becoming too bad and unbearable (such as insomnia). Same applies to Deca in case you have side effects on it.

Deca Dick

Despite the fact that Trenbolone is a more powerful steroid than Deca (Nandrolone) there is a side effect that seem to be worse on Deca than Tren – effect on sexual life. Deca Durabolin is quite a famous steroid for offering erectile dysfunction (impotence) and that’s because Deca was found to lower DHT levels.

DHT (Dihydrotestosterone) is an essential hormone for allowing the blood flow to the penis. When is being lowered, less blood flow goes to the penis and this is leading to erectile dysfunction (ED) which was named Deca Dick since is caused so commonly by Deca.

However, there are various methods how a person could reverse this side effect. For example, stacking it with compounds that would increase DHT levels like testosterone, Trenbolone or many others, or by adding some male enhancement pills (Viagra, Cialis, Levitra and others).

Tren Cough

parabolan-trenbolone Extremely coughing instantly after injecting Trenbolone (especially Acetate) is something extremely common as it would occur to almost everyone, approximately once in every 5 injections. The user starts coughing like crazy immediately after administering Tren that would offer a shortness of breath and tight chest.

Important: Although this sounds like something horrific, Tren cough is not dangerous or life threatening because coughing (shortness in breath) lasts for only several seconds up to about a minute.

This is a very common side effect of Trenbolone – most common with Tren because is an irritant, but such coughing, in fact, can occur with injecting any steroid, and that’s especially when the needle would hit a blood vessel. It occurs because the lungs are becoming irritated when the compound is entering the blood stream.

That’s how Tren Cough occurs and also you may feel a metallic taste left in the mouth.

Tren or Deca: What’s Best For Women?

To be honest, none of these compounds are not recommended to use in women. There are much better alternatives than Tren and Deca, nonetheless, if I were to choose from Tren and Deca then I would definitely say that Deca is much better.

Trenbolone Acetate is extremely high in androgenic activity, that’s why is almost a sure thing that a woman is going to be turned into a man by administering it, and that’s even at smaller/ lower dosages. The risk of a woman developing virilizing side effects are extremely high, regardless of the dosage, virilization (masculinization) symptoms would occur almost instantly from the first dosage.

Virilization risks exist with Deca Durabolin too, however they are much lower compared to Trenbolone, that’s why is much suitable for women. In fact, women may use Deca but only in reasonable and very low dosages. For example, that would be 100 mg administered once every 2 weeks. That’s in the time that a dosage for man would be about 400 mg per week.

Cycle lengths should be much lower too, from 8 up 10 weeks maximum. The less the cycle length, the less the risks. Doses higher or longer cycle length is almost surely going to offer masculinization.

Can These 2 Steroids Deca and Tren be Stacked Together?

Certainly yes. These 2 steroids are, in fact, very often stacked together by many different bodybuilders. In fact, is always recommended to stack Deca and Tren with other steroids and not to take them alone, either with each other, or with others.

That’s because a stack would highly increase the size and strength gains compared to using them alone, which is not only not going to be as effective, but would increase the risks of side effects (as explained earlier in this article).

Nonetheless, although you may stack them and many people does it, Deca and Tren stack is not the most popular combination out there. At very least, that’s because there’s no Testosterone in the cycle. Nonetheless if you want to add huge amounts of muscle mass – this stack would work good.

You can read more about each of the compounds separately. Click here for Trenbolone information. Click here for Deca Durabolin information.

The Best Steroids to Stack Tren and Deca?

In both cases, and in many other cases (other steroids), Testosterone is the best thing to stack with either Trenbolone, or/ and Deca Durabolin (Nandrolone). That’s because an increase in Testosterone is always helpful during such cycles, you can greatly boost your gains and strength, while reducing some side effects.

Often, people choose to add Anadrol to their Deca or Trenbolone cycle. However, I need to warn you that although this stack can be extremely helpful, it also can be extremely dangerous. Anadrol is very powerful and when combined with Trenbolone, the side effects are only going to get even worse, but the good news is that in the same time – the benefits and results would be highly boosted as well.

Summary: Trenbolone Acetate vs Deca Durabolin (Nandrolone Decanoate) Review

As much as it was earlier mentioned – we cannot give you a precise answer which one is better. Trenbolone is an extremely powerful steroid, most likely one of the most powerful that you would ever be able to buy online on the market.

Being so powerful, it would offer crazy results when comes to physique and performance enhancement, however, there’s a higher risk of negative side effects and they would be nastier.

Deca Durabolin (Nandrolone Decanoate), on the other hand, is a much milder steroid and whilst the risks and intensity (and frequency) of side effects are by far not as bad as those compared to Trenbolone, the results aren’t going to appear as fast and they won’t be as huge.

Both are very effective and both can be pretty safe when you know how to use, exactly as both can be very dangerous when abusing. Which one to choose depends only on your needs and ultimate goals.

If you want to grow like crazy regardless of risks go for Tren, if you’re more into slower but safer growing then go for Deca.

Regardless which one you choose, you can buy them online from the best source. Buy Deca Durabolin here. Alternatively, buy Trenbolone here.

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