Drug intoxication is the toxic effect of drugs on the body caused by overdose, improper use, drug interactions, or individual intolerance. The consequences of intoxication can range from mild symptoms to severe conditions, including death.
Causes of drug intoxication
1. Overdose – intentional (e.g., suicide attempt) or accidental (e.g., mistakenly taking too much of a dose).
2. Drug interactions – combining incompatible drugs (e.g., antidepressants and alcohol).
3. Impaired kidney or liver function – if these organs have a reduced ability to eliminate drugs, even a therapeutic dose can cause poisoning.
4. Allergic reactions or idiosyncrasy – an unpredictable reaction of the body to a drug.
5. Polypharmacy – taking a large number of drugs at the same time (especially in elderly patients).
Effects on the body and organ systems
1. Nervous system
Mental disorders: confusion, hallucinations, anxiety, aggression, seizures.
Coma and respiratory depression (for example, with opioid intoxication).
Tremor and impaired coordination (often with poisoning with psychotropic drugs or antidepressants).
Drugs that affect the nervous system (for example, benzodiazepines and neuroleptics), when overdosed, can cause drowsiness, loss of consciousness and depression of the central respiratory center.
2. Digestive system
Nausea, vomiting, diarrhea – often occur as the body’s primary response to toxic substances. Acute liver failure – possible with paracetamol or anti-tuberculosis drug intoxication. The liver is under a lot of stress when metabolizing toxins.
Damage to the pancreas: drugs such as diuretics or statins can cause pancreatitis.
3. Cardiovascular system
Arterial hypotension (low blood pressure) – often with intoxication with antihypertensive drugs or sedatives.
Arrhythmias and cardiac arrest – typical of overdose with antiarrhythmics or antidepressants (e.g. tricyclics).
Drugs such as sympathomimetics (e.g. amphetamines) can cause hypertension and tachycardia, which increases the risk of stroke or heart attack.
4. Kidneys and urinary system
Acute renal failure – possible with intoxication with nonsteroidal anti-inflammatory drugs (NSAIDs) or antibiotics (e.g. aminoglycosides).
Electrolyte disturbances (hypokalemia, hyponatremia) caused by poisoning with diuretics or hormonal drugs can impair the functioning of the heart and brain.
5. Respiratory system
Respiratory depression – typical for overdose of opioids (e.g. morphine or fentanyl) and sedatives.
In severe cases, respiratory arrest or aspiration pneumonia (if vomit enters the lungs) is possible.
6. Immune system and allergic reactions
Anaphylaxis is an acute allergic reaction that can be fatal without immediate medical attention.
Drug fever and skin rashes (such as Lyell’s syndrome or Stevens-Johnson syndrome) may occur as an adverse reaction to certain antibiotics or sulfonamides.
7. Sexual and reproductive system.
The impact on reproductive health is due to the toxic effects of drugs on hormonal levels, the vascular system, and the nervous mechanisms that regulate sexual function.
1.Effects on the male reproductive system
Erectile dysfunction (impotence)
Antidepressants (such as SSRIs – selective serotonin reuptake inhibitors) and beta blockers can impair erection by inhibiting nerve impulses and blood supply.
Overdosing on sedatives or opioids causes central nervous system depression, which suppresses the sexual reflex and reduces libido.
Hormonal imbalances
Corticosteroids and anabolic steroids can suppress testosterone production, leading to decreased libido, weakened secondary sexual characteristics, and even testicular atrophy.
Antiandrogens used to treat prostate cancer can disrupt hormonal balance and cause infertility.
Decreased fertility
Some antibiotics (such as tetracyclines) and chemotherapy drugs can reduce sperm motility and quality, leading to temporary or permanent sterility. Damage to the blood vessels of the penis caused by intoxication can impair blood supply, which also affects erection and fertility.
2. Effects on the female reproductive system
Menstrual irregularities
Hormonal drugs, antidepressants, and psychotropic drugs can cause an imbalance between estrogen and progesterone, leading to irregular menstruation or amenorrhea (absence of menstruation).
Decreased libido and vaginal dryness
Antidepressants, sedatives, and neuroleptics can reduce sexual desire and cause vaginal dryness, which leads to discomfort during intercourse.
Fertility problems
Chemotherapy and some immunosuppressants can damage the ovaries and reduce ovarian reserve, making it difficult to conceive or causing premature menopause.
Long-term intoxication can disrupt egg maturation and ovulation, reducing the chances of conception.
Increased risk of miscarriage and congenital abnormalities
Toxic effects of certain drugs (such as anticonvulsants and retinoids) during pregnancy can lead to miscarriage or birth defects in the fetus.
3. Sexually transmitted infections and immunosuppression
Some immunosuppressants and chemotherapeutic drugs reduce immune defense, increasing the risk of infections, including sexually transmitted infections. This can worsen the condition of the genitals and affect reproductive health.
4. Psychological consequences of intoxication
Sexual dysfunction may be associated with depression and anxiety caused by poisoning.
Long-term use of psychotropic drugs can suppress libido and cause emotional coldness or sexual dysfunction.
Examples of drugs that cause disorders in the reproductive system
Antidepressants (SSRIs, tricyclics) – suppress libido, cause erectile and ejaculatory disorders.
Antipsychotics – can cause hyperprolactinemia (increased prolactin levels), which disrupts sexual function.
Hormonal agents – lead to hormonal imbalance and menstrual irregularities.
Opioids – suppress the production of sex hormones and reduce libido.
Stem cells and their precursor cells have significant potential in restoring the body after intoxication with medications. Their therapeutic properties are based on tissue regeneration, immunomodulation, anti-inflammatory effect and the ability to stimulate natural regenerative processes. This makes the therapy a promising tool for eliminating the consequences of toxic damage to organs and individual systems.
1. The role of stem cells in organ regeneration
Liver:
In toxic hepatitis and acute/chronic liver failure, stem cells can stimulate the regeneration of hepatocytes (liver cells).
Mesenchymal stem cells (MSCs), Exosomes for deep cell regeneration reduce inflammation and prevent the development of fibrosis, restoring damaged tissues.
Kidneys:
NSAID or antibiotic intoxication can cause acute renal failure. Renal tubular epithelial cells help restore the renal epithelium and support the function of nephrons.
MSCs and endothelial microvascular cells also reduce inflammation and stimulate angiogenesis (the formation of new vessels), improving the blood supply to the kidneys.
Nervous system:
When the brain and spinal cord are damaged due to intoxication (for example, with antidepressants or antipsychotics), neural stem cells can restore neurons and improve cognitive function. Also, along with them, precursor cells (neuroblasts, neurospheres, astrocytes) are used, which very gently affect the damaged area, without causing an immune response and passing the protective BBB barrier.
They also reduce the level of oxidative stress, reducing further damage to nerve tissue.
2. Anti-inflammatory and immunomodulatory action
Intoxication causes inflammatory processes in various organs. MSCs secrete anti-inflammatory cytokines (e.g. interleukin-10, 4), reducing tissue damage. Additionally, the mitochondrional complex is also used for energy metabolism in cells.
These cells regulate the activity of the immune system, preventing autoimmune reactions that can occur after toxic damage.
3. Reduction of fibrosis and prevention of scarring
After prolonged toxic exposure, fibrosis (scarring) may develop in organs such as the liver, heart or kidneys, etc. MSC cells, microvascular cells and tissue metalloproteinase inhibitors prevent excessive collagen formation and improve tissue structure, preventing the development of chronic complications.
4. Restoration of the vascular system
Some drugs cause damage to blood vessels, which worsens the blood supply to organs. Stem cells stimulate angiogenesis, improving microcirculation and promoting tissue restoration.
Myoblasts are also used in case of damage or weakness of muscle tissue.
5. Protection and restoration of reproductive function
Intoxication can negatively affect germ cells and hormonal levels. Stem cells help restore the function of the testicles and ovaries, reducing the risk of infertility. There is a special subtype of receptor cells that restore sensitivity to testosterone or another hormone, improving sexual and reproductive functions.
They can also improve blood supply to the genitals and reduce inflammation.
6. Correction of metabolic disorders
Stem cells can help with metabolic disorders (for example, with damage to the pancreas). They stimulate the regeneration of beta cells, which helps to normalize glucose levels; Langerhans cells are used for this.
This is especially important in case of toxic damage to the pancreas caused by drugs.
For more extensive or functional damage to individual organs, 3D organoids can be used. This is a self-organizing three-dimensional tissue from stem cells (pluripotent, fetal or adult), which imitates the key functional, structural and biological complexity of the organ, including the intestines, liver, pancreas, kidneys, prostate, lungs and brain)
The consequences of intoxication with medical or other drugs are always difficult to fully assess, because quite often they are extensive, and many systems and organs are involved in systemic disorders and complications. Symptoms are very diverse, and each patient may have their own.
Our task is to maximally influence all the patient’s “pain points” so that the recovery result is comprehensive and complete.