9 Trenbolone Side Effects: From Mild to Severe

The most common side effects of trenbolone are acne, hair loss, insomnia, changes in cholesterol levels, increased blood pressure, gynecomastia, suppression of natural testosterone production, stress on the cardiovascular system and psychological disorders, just to name the most frequent.

The user's genetics, dose, and duration of use can influence the severity and incidence of these side effects. However, when compared to other anabolic steroids, trenbolone has one of the worst side effect profiles.

Below, we'll list each side effect, its chances of occurring, whether it can be avoided, and the overall health risk each one poses.

AcneHealth risk: low.Probability of happening: medium.It is possible to avoid it: it depends directly on the user's predisposition.Is it possible to reverse: yes.

Trenbolone can cause acne due to its potent androgenic action on the sebaceous glands, which, simply put, can stimulate these glands to produce more sebum, which will make the skin oilier.

If the user is predisposed to acne, this increase in oiliness can facilitate the appearance or worsen the condition.

Avoiding or mitigating this side effect is, at the very least, uncertain.

It is possible to take preventative measures, such as improving personal hygiene and using specific creams or medications to control acne, but this will still depend on each person's sensitivity and predisposition.

It is not a side effect that can pose serious risks to the user's health.

Hair lossHealth risk: low.Probability of happening: medium.It is possible to avoid it:  it depends directly on the user's predisposition.Is it possible to reverse: no.

Even though it is not a derivative and does not undergo conversion into DHT (the main hormone that causes hair loss), trenbolone causes the problem due to its great ease in binding to androgen receptors in the scalp.

However, the chance of side effects occurring is greater in people with a predisposition to baldness and, when they occur, there is no way to avoid or alleviate them.

5-alpha-reductase inhibitors, such as finasteride or dutasteride, are ineffective because these medications prevent the conversion of hormones into DHT, which trenbolone does not.

If hair loss occurs, it will, in the overwhelming majority of cases, be irreversible, as there is no way to recover hair follicles that have been completely lost.

 GynecomastiaHealth risk: low.Probability of happening: low.Is it possible to avoid: yes.It is possible to reverse: in some cases.

The main cause of gynecomastia is the presence of high levels of estrogen, a hormone capable of stimulating the growth of mammary glands in men.

However, trenbolone is not converted into estrogen, nor is it a derivative of it.

However, the hormone can alter prolactin levels, which indirectly modify the body's sensitivity to estrogen, even in the presence of normal levels of the hormone.

The chance of side effects occurring is certainly lower compared to other steroids, but the possibility still exists.

Dosage, time of use and individual sensitivity will be the determining factors.

Mild cases can be reversed if treated early and, in general, do not pose serious risks to the user's health.

Worsening cholesterol levelsHealth risk: high.Probability of happening: high.Is it possible to avoid: no.Is it possible to reverse: yes.

Any anabolic steroid will, to some degree, affect cholesterol levels, as the presence of excess anabolic-androgenic hormones alters the functioning of certain liver enzymes. In short, this results in the degradation of good cholesterol (HDL) and the accumulation of bad cholesterol (LDL).

The more androgenic a hormone is, the more pronounced its deleterious effects on cholesterol tend to be.

Since trenbolone is one of the most potent steroids available, worsening cholesterol levels is not only expected but occurs to a significant degree in most people.

Even if you take preventative measures, such as improving your diet and adding cardio to your routine, the side effect will still occur.

Having a bad cholesterol profile is a risk factor for developing cardiovascular disease, which is why this side effect is considered one of the worst.

However, after stopping use, cholesterol levels tend to gradually normalize over several months, especially if the user's habits and lifestyle are healthy.

Increase in blood pressureHealth risk: high.Probability of happening: low/medium.Is it possible to avoid: yes.Is it possible to reverse: yes.

Trenbolone can raise blood pressure mainly due to two factors: it can increase the hematocrit percentage, making the blood more viscous, and it can alter kidney functions that, directly or indirectly, influence blood pressure.

The chance of side effects occurring is higher when compared to other steroids, to the point that the use of the hormone by people who already have the problem is highly contraindicated.

The problem can be avoided or mitigated with stricter dietary control, increased frequency and quantity of exercise that works the cardiovascular system and, in more severe cases (and with medical supervision), through the use of specific medications to control blood pressure.

Blood pressure usually returns to normal when the hormone is discontinued, but hypertension is a condition that can become chronic if damage occurs to the arteries. There's no way to know for sure whether trenbolone use can affect this in the medium to long term.

Psychological disordersHealth risk: medium/high.Probability of happening: medium.It is possible to avoid: rarely.Is it possible to reverse: yes.

Anabolic steroids can alter the production and balance of certain neurotransmitters, as the brain also has androgen receptors (and even needs them in normal doses).

However, when there is an excess of circulating androgenic hormones, there is a greater potential for more of these hormones to bind to receptors in the brain.

The practical result of this is behavioral changes and a higher incidence of psychological disorders, such as anxiety, paranoia, depression, aggression, sudden mood swings and other similar problems.

Since this side effect depends on the potency and dose of the hormone, it's no surprise that trenbolone is one of the worst steroids in this regard; psychological disorders are common and, depending on the user's predisposition, difficult or impossible to manage.

The “good” news is that these effects usually disappear once the drug is completely out of the body.

Suppression of natural testosterone productionHealth risk: medium.Probability of happening: high.Is it possible to avoid: no.Is it possible to reverse: yes.

Because it is an extremely potent androgen, trenbolone causes the suppression of natural testosterone production quickly and pronouncedly.

This occurs in the form of negative feedback: in simple terms, the brain perceives that there are excess anabolic hormones and, as a containment measure, interrupts the natural production of testosterone.

There is no way to escape this side effect, but it is possible to reverse it in most cases after use, especially with the help of post cycle therapy .

InsomniaHealth risk: medium.Probability of happening: high.It is possible to avoid: rarely.Is it possible to reverse: yes.

Trenbolone causes insomnia by stimulating the central nervous system.

It interferes with neurotransmitters like dopamine and serotonin, keeping the brain alert and making it difficult to relax and fall asleep.

The chance of this occurring is high, and it is one of the most common reports among users.

It is not possible to avoid this side effect without pharmacological help, which can add a new layer of side effects brought on by the medications that help with sleep themselves.

After discontinuation of use, insomnia tends to lessen and cease as the body eliminates the hormone and restores natural neurochemical balance, although the time for complete reversal may vary between individuals.

General worsening of the cardiovascular systemHealth risk: high.Probability of happening: high.Is it possible to avoid: no.It is possible to reverse: in some cases.

Trenbolone attacks the cardiovascular system through multiple mechanisms.

It dramatically worsens the lipid profile, reducing HDL (good) cholesterol and increasing LDL (bad), which can accelerate certain conditions, such as atherosclerosis.

It can raise blood pressure, which in itself can cause several problems in the cardiovascular system, such as stiffening the arteries and increasing stress on the heart.

It is a cardiotoxic substance – trenbolone can affect the heart directly.

In short, it's virtually impossible to avoid damage to the cardiovascular system during use. However, the degree of damage can vary with the dose, duration of use, and the user's predisposition to cardiovascular problems.

After the cycle, complete reversal is questionable: cholesterol and blood pressure levels may improve, but structural damage to the heart and arteries is often permanent.