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Captagon Guide · Harms

Harms of Captagon to the body and mind

Reviewed by: Dr. Mahmoud El-Sawy Last updated: September 28, 2026 10 min read
The short answer

The harms of Captagon come from two sources: the stimulant itself, mostly amphetamine, which strains the heart, raises blood pressure and body temperature, and causes insomnia and anxiety and sometimes psychosis; and the unknown composition of the pill, which may contain more than expected or additives such as large amounts of caffeine. With continued use, psychological and social harms build up, most notably depression, aggression, road crashes, and declining school performance.

  • Heart attacks linked to Captagon have been recorded in people in their twenties.
  • A pill the person has “tried” before is no guarantee that the next pill will be the same.

Why do unknown pills make Captagon more dangerous?

When a patient takes a stimulant medication from a pharmacy, the doctor knows exactly what is in the tablet. With Captagon, every pill is a new gamble; clandestine labs follow no standards, and forensic analyses of seized pills have revealed large differences between them:

  • The amount of active substance varies: two pills that look identical can differ greatly in strength.
  • Undeclared additives: caffeine, theophylline, paracetamol, quinine, and others, each with its own side effects.
  • Substitute substances: some pills contained no amphetamine at all, and some may in future contain stronger stimulants.
  • Manufacturing contamination: chemical residues from crude production processes whose long-term effect no one knows.
In the Captagon market neither the seller nor the buyer knows what is in the pill, and the body alone pays the price of that ignorance.

The danger of combining amphetamine and caffeine in one pill

Caffeine seems like a harmless substance because it is in coffee and tea, but adding it to amphetamine in one pill increases the load on the heart and nervous system, as both speed up the pulse, raise blood pressure, and reduce sleep. It gets worse when the person who uses it also drinks coffee or energy drinks to stay awake, so three stimulants converge on a single heart.

Harms of Captagon to the heart and brain

Harms of Captagon to the heart, circulation, and brain
OrganPotential harm
HeartPalpitations and rhythm disturbances, and heart attacks have been recorded even in young people with no previous disease.
Blood pressureSudden surges that can cause bleeding in the brain.
BrainStrokes and seizures with large amounts or strong pills.
Body temperatureA dangerous rise, especially in heat or with exertion, which can lead to muscle breakdown and kidney strain.
Infographic of a human body map showing the harms of Captagon to organs: the heart, blood pressure, the brain, body temperature
Harms of Captagon to the body's different systems

Psychological harms: psychosis, depression, and aggression

Psychosis

With continuous sleeplessness and repeated use, suspiciousness, fear of other people, and hallucinations may appear, and they need urgent psychiatric assessment.

Aggression and impulsivity

Quick temper and poor control of emotions; minor disagreements can turn into violent fights.

Depression

After each period of staying up comes a drop in mood, and with repetition it can become persistent depression.

Anxiety and panic attacks

Palpitations and a sense of danger can make the person think they are dying.

These harms are greater in people who are predisposed to a psychiatric disorder, or who mix Captagon with hashish or other substances, and they then need treatment that deals with both conditions together, known as dual diagnosis.

Captagon and road crashes

Some drivers use Captagon to resist sleep on long journeys, thinking it makes them safer. The truth is the opposite: the stimulant increases impulsiveness, risk-taking, and poor judgment of distance and speed, and when its effect wears off, sudden exhaustion and heavy drowsiness can overcome the driver in the middle of the road. This is why stimulants are linked to road crashes, putting the driver, passengers, and others at risk.

The danger of mixing Captagon with other substances

Common mixing risks
The mixWhy it is dangerous
Captagon + hashishMay increase anxiety, suspiciousness, and the risk of psychosis, and each masks part of the other's effect.
Captagon + pregabalin or sedativesA cycle of stimulation then sedation that wears out the body and adds a second dependence whose withdrawal can be dangerous.
Captagon + tramadolStrain on the nervous system and a higher risk of seizures, with double dependence.
Captagon + alcoholThe stimulant reduces the feeling of being drunk, so the person drinks more, with a doubled load on the heart.

What does Captagon do to the body in the long term?

  • Weight loss and poor nutrition: repeated loss of appetite wears the body down and weakens muscles and concentration.
  • Chronic exhaustion: accumulated sleep debt leaves the person tired even on days of abstinence.
  • Mouth and teeth: dry mouth, jaw clenching, and teeth grinding speed up tooth decay and cause jaw joint pain.
  • Weakened immunity: lack of sleep and poor nutrition make repeated infections more common.
  • Chronic headache and palpitations: recurring complaints that the person lives with without linking them to the pills.

Harms of Captagon to sexual health in brief

Most Captagon pills in circulation are amphetamine and caffeine, and amphetamine is not a sexual stimulant as is commonly claimed; in a Taiwanese study of 1,159 men who use it, the likelihood of erectile dysfunction was about double that of others after accounting for other factors. Staying up late and the depression of the “crash” add a loss of desire, and impulsiveness raises the risk of unsafe sex, while combining it with over-the-counter sexual stimulants doubles the strain on the heart.

You will find the full evidence, and what improves after stopping, on the page Captagon and sex: what really happens behind the “energy pill”?.

Harms of Captagon to students and academic performance

Some students turn to Captagon the night before an exam, thinking it boosts concentration, but what actually happens is different: the brain needs sleep to consolidate what has been studied, and artificial wakefulness weakens memory on exam day itself, on top of anxiety, palpitations, and scattered thinking. With repetition in every exam season, it turns into dependence, and then into a real decline in school performance after a period of illusory improvement.

Why are teenagers harmed more by Captagon?

The teenage brain is still building the circuits responsible for impulse control and planning, and this continues until roughly the mid-twenties. That is why early exposure to stimulants raises the likelihood of addiction and speeds it up, and increases the later risk of anxiety, depression, and psychosis. Teenagers are also less able to judge risk, so it is easy for them to accept a pill from a friend without thinking about what it contains. Early intervention at this age changes the course a great deal.

Harms of Captagon in pregnancy

Amphetamine stimulants reduce blood flow to the placenta and are linked to low birth weight, premature birth, and pregnancy complications. With Captagon the risk is higher because its composition is unknown, and because the added caffeine in unknown amounts has its own effect too. A pregnant woman who uses it should see a doctor without fear, because early intervention protects both mother and baby.

Social and legal harms

  • Family conflicts over staying up late, irritability, secrecy, and asking for money.
  • Declining performance at work after a period of “excess energy,” and mistakes that can be serious in jobs that need precision.
  • Accidents and injuries due to impulsiveness and poor judgment of risk.
  • Serious legal problems, as Captagon is a banned substance in Egypt and most countries of the region.

Do the harms of Captagon go away after stopping?

Most harms improve after stopping and treatment: sleep, appetite, and weight settle within weeks, blood pressure and heart rate calm down, and mood and concentration improve gradually. Someone who has had a heart attack, a stroke, or repeated psychotic episodes needs longer medical and psychological follow-up. The earlier the intervention, the greater the chance of full recovery.

Signs of poisoning from Captagon pills: call the ambulance (123) immediately

  • Very high body temperature, or sweating that stops, with flushing and confusion
  • Chest pain spreading to the arm or jaw, or severe irregular palpitations
  • A seizure or loss of consciousness, even briefly
  • Sudden agitation and violence, or hallucinations and intense fear of things that are not there
  • A sudden severe headache, or numbness and weakness on one side of the body, or slurred speech

Call the ambulance (123) immediately and say that the person took stimulant pills, if you know. Move them away from heat and crowds and speak to them in a calm voice. If they lose consciousness, place them on their side and stay beside them until help arrives. Don’t give them coffee, energy drinks or any other pills.

Call the ambulance 123
Frequently asked questions

Frequently asked questions about the harms of Captagon on the body and mind

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Does Captagon cause blood clots?

It can cause heart attacks and strokes through narrowing of the blood vessels and sudden rises in blood pressure, and cases have been recorded in young people after taking only a few pills.

Does Captagon destroy the brain?

Repeated use causes changes in the reward and attention circuits, and may cause psychosis and depression, but a large part of this improves with stopping and treatment over time.

Does Captagon cause violence?

It can increase impulsiveness, irritability, and suspiciousness, especially with continuous sleeplessness or psychosis, but the media image of it as a substance that makes “fearless fighters” is exaggerated.

Are the harms of Captagon less than those of shabu?

Shabu is usually stronger and faster in its psychological harms, but Captagon is not safe; its unknown composition can make a particular pill stronger or more dangerous than the person using it expects.

Does Captagon affect the kidneys?

In severe poisoning, a dangerous rise in temperature and muscle breakdown can occur, straining the kidneys and causing acute kidney failure, which is an emergency.

Is a single Captagon pill dangerous?

It can be, because the composition of the pill is unknown, and because some people have undiscovered heart or psychiatric problems that make the effect of even one pill severe.

Does Captagon cause sexual dysfunction?

It may temporarily increase desire at first, but repeated use is linked to sexual performance problems and risky behavior, and this often improves after stopping.

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