Causes and treatment of headache, nausea and vomiting in an adult: when it indicates diseases

Symptoms such as headache, nausea and vomiting require immediate medical attention. They do not occur in a healthy person and indicate serious disorders. Symptoms may correspond to both chronic hypertension and brain tumors. It is important to determine the cause of the violations in time and select the most effective treatment regimen. The Clinical Brain Institute specializes in the diagnosis and treatment of diseases that cause acute headache, nausea and vomiting, offering an individual approach and comprehensive regimens.

Migraine

When vomiting is accompanied by headache and nausea, there is a high probability that the person has a migraine.

In most cases, a migraine attack lasts from 4 hours to 2-3 days. A person suffering from this disease experiences severe headaches that he cannot relieve with pills, even analgesics.

The discomfort is pronounced and intense. The causes of migraine are mainly associated with psycho-emotional shocks.

If a person is under stress for a long time, he gets a severe headache. After a painful attack, he faces the problem of nausea and vomiting.

Other migraine symptoms:

• Respiratory dysfunction. The person may experience shortness of breath.
• Body aches.
• Malaise.
• Chills.
• Strong pulsation in the temporal zone.
• "Floaters" before the eyes.
• Pale skin.
• Fast fatiguability.

It is worth noting that migraines are not always accompanied by nausea and vomiting. In most cases, migraines affect women.

A person prone to this disease has difficulty reacting to external stimuli such as bright light or loud sound.

Pain occurs mainly during the daytime.

Causes

In children, vomiting, which appears along with a headache, is quite common. Sometimes it is accompanied by an increase in body temperature and indigestion.

In some cases, headache and nausea in a child are the only symptoms. To establish the cause and help your baby as quickly as possible, you should consult a doctor.

There are many factors that can provoke such ailment in a baby. The most common ones are:

• Head injuries, which occur quite often in children due to carelessness. In addition to cephalalgia and vomiting, a concussion can be suspected if the child turns pale, breaks into a cold sweat, or hears ringing in the ears. A short-term loss of consciousness is possible.
• Attacks of abdominal migraine associated with painful sensations in the abdomen that appear in different parts of it. The child sweats a lot, his skin becomes pale. If one of the parents suffers from abdominal migraine, then there is a high probability that from time to time the child will experience headaches and vomiting for this very reason.
• Neoplasms in the brain that create pressure on surrounding tissues and blood vessels. These can be malignant or benign tumors, cysts, purulent foci. Depending on the place where they are localized, additional symptoms appear: problems with the functioning of the sensory organs, impaired motor functions, hallucinations and others.

If abdominal migraine does not pose any particular danger, then head injuries and tumors should be taken very seriously. You cannot do without consulting a neurologist and neurosurgeon. Timely treatment will give a chance to completely get rid of the pathology.

One of the first symptoms of infectious diseases in children of any age is the appearance of cephalgia and vomiting. This is due to increasing intoxication, which appears within a few hours after the onset of the disease - measles, sore throat, pneumonia and others.

Along with severe headaches, there is an increase in temperature to 30-40 degrees. But after using antipyretics, the temperature decreases and the intensity of pain weakens.

It is much more dangerous when hyperthermia is accompanied by a headache localized in the temples and forehead, vomiting - this is a sign of an inflammatory process that develops in the brain. With such serious diseases as encephalitis and meningitis, the following may appear:

• Chills.
• Muscle weakness.
• Cramps.

The disease often leads to the development of toxic shock and sometimes death. Therefore, if a child has a headache and nausea, you should not guess what it could be - you need to urgently consult a doctor.

Vomiting and headaches in children are often caused by food poisoning or toxic substances. In this case, together with the vomit, the body is cleansed of the poison that has entered it. Symptoms depend on the product that caused the intoxication, but the main ones are:

• Nausea, urge to vomit.
• Severe chills.
• Sudden lethargy, drowsiness.
• Headache and dizziness.
• Diarrhea.

Often headaches and nausea are accompanied by other unpleasant symptoms:

• dizziness;
• abdominal pain;
• general weakness;
• heat;
• eye pain;
• noise in ears;

Depending on the accompanying symptoms, it is necessary to identify several diseases that lead to nausea and headaches.

Migraine

Patients usually describe their condition as follows: a throbbing pain appears in one part of the head, as if someone had poked them with a burning stick. It radiates into the ear, eye, temples. With bright light and sharp sounds, the discomfort intensifies. Over time, the headache hurts to the point of nausea, vomiting, and the person cannot do anything.

Experts have not identified the exact causes of migraine; attacks can appear once a week or not bother a person for years. The duration of a migraine attack can range from two hours to three days.

Hormonal changes

Hormonal changes in the human body can provoke headaches and nausea. Patients complain of these symptoms:

• adolescence during puberty;
• pregnant women;
• girls with premenstrual syndrome;
• women of climatic age.

In fact, the reasons why a patient exhibits symptoms such as nausea and severe headaches may be associated not only with disruption of the normal functioning of the gastrointestinal tract.

The factors that provoke this disease are very extensive. The causes of these symptoms may lie in a disease of the nervous system.

Also, a person often feels sick in the event of a head injury, cerebral edema or bruise. Head injuries always cause severe pain.

What to do in case of injury? Severe head bruises can only be cured by a doctor.

If a person suffers a head injury, should he be hospitalized immediately?

Why can't you self-medicate? Under no circumstances should you attempt to treat head injuries on your own, as there is a risk of brain hemorrhage.

When this happens, the victim may experience very severe pain in the head. If medical care is not provided to him in a timely manner, death is possible.

With mechanical impact on the head region, intracranial pressure increases very quickly.

This leads to a person constantly experiencing severe pain in the head and a feeling of nausea.

Severe nausea may cause vomiting. Why do I have a headache and nausea in the absence of gastrointestinal ailments and injuries?

Sometimes, after prolonged reading, while being distracted by some other matter, a person is accompanied by a certain “intoxication” - everything goes around before his eyes, there is a feeling of constriction in his head and there is the urge to vomit. If pain in the head that joins these symptoms is accompanied by decreased vision, then this may be a clear sign of glaucoma.

Headaches and nausea may occur in people with diabetes who have ignored the doctor’s recommendations and violated their diet or medication schedule. Severe headaches occur in girls with anorexia.

In order to accurately make a diagnosis, it is necessary to take into account not only the symptoms, but also the events that took place in the coming days, for example, lunch in a restaurant, mechanical injuries, emotional shocks, hypothermia, depression, etc.

Headache and nausea may also occur after excessive drinking. The morning after the party, a person feels a severe headache, which indicates oxygen starvation of the brain.

Blood cells cannot supply oxygen in the usual amount to the brain due to the presence of alcohol in the blood. Nausea can be explained by the fact that your body is trying to get rid of alcohol breakdown products.

The condition of the body in which there is a headache, weakness and nausea can be caused by a variety of reasons. In any case, this is an indicator that the human central nervous system is not functioning properly due to stressful situations, mechanical stress or excessive fatigue.

As a rule, severe headache and nausea are symptoms that indicate problems and diseases of the human nervous system.

In addition, the causes of this condition include head injuries, brain swelling and other injuries.

Due to the mechanical impact on the head, a person’s internal cranial pressure may increase, resulting in vomiting and headaches.

Sometimes symptoms can occur due to extreme fatigue and stress.

There are other reasons that cause pain and attacks of nausea. Possible diseases include:

1. Migraine. This pathology leads to damage to the nervous system. The person feels nauseous, has a headache, and may also have glare in the eyes. In this condition, people cannot tolerate bright lights, loud music or sounds. Symptoms can last from several hours to several days.
2. Brain tumor. In this case, patients suffer from frequent headaches and attacks of nausea. Similar symptoms appear all the time. If the patient does not suspect other possible causes, and the condition only worsens, then you need to see a doctor and undergo a full examination. You also need to determine exactly when the condition worsens. If severe pain, nausea and other symptoms appear in the morning, then the causes may be a tumor or hematoma.
3. Meningitis. This disease is infectious in nature and when infected, a person’s brain becomes inflamed. A person feels sick, the temperature rises, a severe headache appears, as well as dark spots on the skin are symptoms of meningitis. Severe pain occurs if you tilt your head towards your chest. But there is no way to diagnose the disease yourself; medical help is required.
4. Borreliosis. This pathology negatively affects the skin of people and their joints. In addition, the disease can affect the functioning of the heart and nervous system. Symptoms of this disease are severe headaches, attacks of nausea, weakness in the muscles and body, and dizziness.
5. Arterial hypertension. A dangerous disease that slowly kills people, because the pathology occurs without symptoms.

A person may suffer from nausea, headache, weakness and other symptoms due to food or chemical poisoning; in some cases, symptoms appear as a side effect of medications.

Headache often occurs in diabetics when proper nutrition and daily routine are not applied. Symptoms are also characteristic of anorexia.

Headache is one of the most common complaints when visiting a doctor, regardless of his specialization. Many patients face it: adults and children, women and men. And often headaches are accompanied by other symptoms, such as vomiting. And what is behind such symptoms can be found out only after a detailed examination.

Vomiting is always combined with other pathological symptoms; their complex can tell a doctor a lot when diagnosing diseases. Vomiting with fever and diarrhea indicates food poisoning, an intestinal bacterial infection, with abdominal pain of a certain localization - a peptic ulcer or inflammatory processes in the internal organs.

The combination of a gag reflex with headache and dizziness is also characteristic of some diseases.

In the body, all processes are interconnected, and the main centers of regulation are located in the brain. The entire mass of signals from various receptors located everywhere in the human body enters the brain and is processed. It is from there that commands are sent to the internal organs, and the development of pathological symptoms begins, the complex of which is specific to each disease.

In some diseases, two equally debilitating symptoms act together: headache and nausea. The reasons for such a misfortune are not always clear to the patient.

He is lost in conjecture, he may self-medicate and choose a medicine that will not bring relief, or even hope that “it will pass.”

Doctors warn: if headaches are accompanied by nausea and vomiting, this can be very dangerous, which means you cannot do without professional diagnosis.

Headache and nausea are a sign of several diseases at once, so it is very important for the doctor to know more details about these symptoms in order to determine the diagnosis and treatment.

Severe nausea, vomiting and headache can occur simultaneously, or they can gradually replace each other.

Headache is a common phenomenon that every person is familiar with. But if it is accompanied by nausea, this indicates the presence of a serious pathology in the body. When a person suffers from headache and nausea at the same time, then in such cases they cannot be considered separate symptoms. The cause of these unpleasant manifestations is a general disease.

In the case when you feel sick and have a headache, this may be the development of some dangerous pathology, which may be accompanied by other accompanying symptoms.

Nervous system diseases

The most striking example of problems with the nervous system is encephalitis.

Description of the disease

Encephalitis is characterized by damage to brain cells and the nervous system.

Nature of pain

The headache is very severe in areas of brain damage. The pain is characterized by a pressing effect, which may periodically subside.

Additional symptoms

• Nausea, headache.
• Periodic occurrence of chills.
• The temperature rises to 39 degrees (in some cases higher).
• Decreased physical tone, lethargy in movements.

Which doctor should I contact?

At the first appointment, the patient is examined by a therapist, who then redirects the patient to a neurologist. The doctor, through his narrow specialization, will skillfully make a diagnosis and also determine the severity of the disease.

Diagnosis

Like any other disease of the nervous system, to establish encephalitis as a pathology, a number of the following diagnostic measures are carried out:

• A blood test is performed to identify the causative agents of the disease.
• Magnetic resonance imaging.
• Analysis of urine.

Treatment

When encephalitis is diagnosed, the patient is urgently hospitalized. Treatment is carried out with anthropine-like, antiviral medications. Vitamin complexes based on vitamin “B” are included.

Injuries and bruises

Let's look at what headaches and migraine attacks are and how they differ.

Ordinary painful sensations occur once and not systematically, and their symptoms can most often manifest themselves for various reasons - due to stress or overexertion, both mental and physical. If a person is poisoned by expired foods or alcoholic beverages or is poisoned due to their abuse, then he experiences pain, to which vomiting is also added.

Naturally, they can be provoked not only by poisoning, but also by more serious pathological conditions in the body, which we will consider in the article.

Almost anyone can feel sick, regardless of age, even a child. Additional symptoms are:

• increased body temperature;
• weakness;
• dizziness.

A variety of problems can be characterized in this way - colds, malfunction of the digestive tract, meningitis, brain tumors, and a number of sexually transmitted infections.

Even mild nausea may precede an attack of vomiting. In some cases, vomiting may begin very suddenly. This is usually a protective reaction of the body to cleanse or reject harmful substances.

Vomiting can sometimes be induced artificially, but it is impossible to control the body’s independent reaction. Nausea also occurs regardless of our desire.

Vomiting is a sensation that indicates that the body needs to cleanse itself. This usually results in weakness, increased sweating and salivation. With the gag reflex, the stomach is cleansed due to a sharp contraction of the abdominal muscles and diaphragm.

Most often, such symptoms indicate diseases of the stomach and all organs associated with it, intoxication of the body, infection in the digestive organs.

Often children and adults experience nausea, which eventually turns into vomiting. The combination of such an unpleasant phenomenon with stool disorder and general weakness without a rise in temperature may indicate the development of various pathologies in the body. Vomiting in an adult without fever often begins under the influence of various factors, and it is important to know how to properly help the patient.

There are differences between headaches and migraines. Ordinary attacks are one-time, their symptoms may appear due to overwork. If they are accompanied by vomiting, this may be a consequence of food or alcohol poisoning.

Migraine is long-lasting in nature and attacks are systematic. They are complemented by other manifestations - increased sensitivity to bright light and loud sounds, weakness. Intense vomiting may occur as an initial symptom of migraine.

The causes of such symptoms can be both quite innocent and quite dangerous. Not everyone can make a diagnosis on their own. Painkillers will help eliminate headaches, but they only eliminate the symptom without affecting the cause of the pathology. Each disease requires a specific treatment, and only a specialist can select etching therapy.

Hypertension

Hypertension (arterial hypertension) is a pathology characterized by a constant increase in blood pressure. Indicators exceeding 14090 mm Hg are outside the normal range. Art. According to statistics, hypertension is one of the most common diseases of the cardiovascular system.

Severe nausea, vomiting and headache can occur simultaneously, or they can gradually replace each other.

A severe headache is a sign that there is some kind of malfunction in the body. The cause of the pathology may be indicated by accompanying symptoms that significantly worsen the condition. If nausea is associated with a headache, this may be a good reason to immediately consult a doctor.

Brain cancer

The main symptoms of cancer are nausea accompanied by vomiting and headache.

It is worth noting that the patient experiences pain throughout the entire head area. The reasons why such symptoms appear are associated with the presence of a malignant tumor in the brain area.

If a person has been diagnosed with brain cancer, he will quickly get tired, and drowsiness will become his constant companion.

Some cancer patients complain of frightening hallucinations. They usually occur after vomiting, when the person was as tense as possible.

Other symptoms are also observed:

• Deterioration of sensitivity.
• Visual impairment.
• Increased sweating.
• Body aches.
• Fatigue, etc.
• Rapid weight loss.

Severe headache is the most painful symptom of brain cancer. A person suffering from this disease loses the ability to function normally in society. Frequent pain syndrome leads to loss of performance.

You should not expect that a malignant tumor will go away on its own. It is possible to help the patient return to the usual rhythm of life only if doctors notice it in a timely manner.

That is why it is important to go to the hospital on time. If a person is faced with the problem of nausea, headache and vomiting, he should not delay going to the hospital.

It is worth noting that an oncology patient’s head hurts less if he is not exposed to stress. This is a proven medical fact.

Treatment of the causes and consequences of vomiting and diarrhea

When vomiting and diarrhea without fever, the main thing is to eliminate the cause. It is important to avoid dehydration. Simple drinking water does not contain sugar or minerals, and the body loses them during diarrhea; it is important to restore this loss. You should drink a lot of liquids containing these substances: broths, mineral water. It is advisable to do this every half hour.

You can take medications to treat the cause of vomiting and diarrhea:

• “Hilak Forte”, “Mezim” will help restore the microflora;
• when the temperature rises to 38 degrees; Paracetamol, Ibuprofen;
• antimicrobial drugs are prescribed by the attending physician.

The main thing to remember is that you must wash your hands before eating and preparing food. Products should be stored correctly. It is not recommended to eat in dubious establishments or drink untreated tap water.

Diet

The first day, when your stomach hurts without fever, vomiting and diarrhea, you can eat some crackers with tea or dry cookies. On the second day, when the vomiting stops, you can gradually introduce light foods into your diet:

• baked apples;
• bananas;
• yogurt, kefir;
• boiled carrots;
• broccoli.

During the recovery period, it is necessary to replace lost substances. Food should be high in calories, but not irritate the stomach. Be sure to be fresh, not too hot or cold. Eat in small portions 5-7 times a day. During the first days, prefer liquid dishes: soups or pureed purees. Do not fry foods, but boil, simmer, or steam. Make puree from vegetables, take cottage cheese, low-fat soups. Grind the meat. Do not add sugar to porridge.

Medicines for vomiting and diarrhea

In case of poisoning, certain groups of drugs are used:

1. Antimicrobial, having a wide spectrum of action, killing almost all or all pathogens of diarrhea. Treatment is aimed at the root causes of the disease. They act in the intestines without having a systemic effect. They are not absorbed into the intestine itself and do not penetrate into the blood.
2. Adsorbents are able to eliminate gases and toxins, reducing severe symptoms. Taking it leads to an improvement in the condition for a while, but does not lead to a complete cure.
3. Synbiotics, prebiotics, stimulate the production of normal microflora. These are live lactobacilli located in the intestines, normalizing the activity of its own microflora. Medicines are important, since with diarrhea it is difficult to recover on its own.
4. Painkillers are used for severe discomfort.

Mineral water

Treatment at home can cleanse the body of harmful toxins, relieve symptoms and maintain vitality. Be sure to drink a lot of water, mineral water, but without gas. What is the best water to drink? Alkaline mineralized:

• Polyana Kvasova;
• Shayan (Transcarpathian);
• Essentuki;
• Borjomi;
• Shivanda;
• Shivia;
• Arshan.

Treatment with water at resorts, experts calculate the amount of water for each patient individually. You need to drink at least 600 ml.

Gentle day mode

Food infection leads to pain and severe weakness. Therefore, it is important not to overwork and stick to bed rest. The first day to refuse food. On the second you can drink jelly, eat crackers, liquid mashed potatoes, rolled oats with water. If symptoms do not improve, you should consult a doctor.

Pregnancy

We can say that this is the most “harmless” factor that provokes headaches that occur during nausea.

The reasons for such symptoms are early toxicosis.

With morning sickness, a pregnant woman may experience severe nausea. A feeling of lightheadedness may accompany the expectant mother during the first half of the day.

Vomiting occurs mainly after waking up. Pain in the head area can bother a woman not only in the morning, but also in the evening.

The reasons for her poor health lie in the body’s adaptation to the presence of a fetus inside.

Why does a headache go away after vomiting?

When your head stops hurting after vomiting, this signals a migraine attack. A characteristic feature of migraine is pain in one side of the head.

This disease is incurable, but if you follow all the doctor’s recommendations and properly prevent attacks. You can reduce unpleasant symptoms to a minimum. In any case, you need to visit a doctor to prescribe appropriate medications and clarify the dosage.

Hangover

A hangover is a condition that occurs as a result of alcohol intoxication. A hangover occurs, mainly due to the mixing of various alcoholic drinks.

Nausea during a hangover is an absolutely normal phenomenon. The body tries to fight the toxin inside, causing vomiting.

It is important that in case of alcohol intoxication, a person vomits. What is it for? Vomiting will quickly export the toxin that has settled in the human stomach.

After removing the toxin, the person will feel better, the pain will go away, and the feeling of nausea will no longer bother him.

Other hangover symptoms:

1. Dry mouth.
2. Weakness.
3. Chills.
4. Drowsiness.
5. Depressed mood.
6. Trembling hands, etc.

Alcohol intoxication is a rather unpleasant phenomenon, but it cannot be said that it poses a threat to life.

Hypertension

Severe headaches always occur with high blood pressure. Also during this illness, the patient often experiences nausea and vomiting.

When blood pressure stabilizes, the patient does not have a headache. What causes hypertension?

This disease affects older people who lead a sedentary lifestyle. Hereditary factors also play a role.

Symptoms:

• Acute pain in the heart area.
• Presence of headache throughout the entire illness.
• Malaise.
• Cardiopalmus.
• Anxious and panicky state of the patient.
• Numbness of fingers.
• Nausea accompanied by vomiting.

Diagnostics

If you experience nausea, dizziness or headache, it is recommended to consult a doctor, who, using medical tests, will establish a diagnosis and prescribe treatment.

Various methods and equipment are used to diagnose the human body:

• Angiography is used to examine the vasculature of the head and neck. This method allows you to determine the presence of aneurysms and migraines.

• 
  CT scan

  Mainly used to study the brain, it allows you to determine the presence of pathologies, neoplasms, and anomalies. With its help, you can detect brain swelling, injuries, ruptures, and poor circulation.
• Magnetic resonance imaging is used to examine the gray matter of the brain and cervical spine. Using this method, it is possible to detect and stop the development of cancerous tumors, sinusitis, hernia, and stroke.

To determine the correct diagnosis, a check of the cardiovascular system, blood and blood pressure tests are also prescribed.

Food poisoning

The occurrence of a headache due to food poisoning is a standard occurrence. This disease occurs as a result of intoxication of the body.

When a person eats a product of poor quality, a toxin can enter his body.

The result is nausea. A poisoned person should experience the urge to vomit. This is necessary to remove the toxin from his body.

Vomiting can be caused after drinking heavily. A person’s headache will go away after the problem of intoxication in his body is eliminated.

Injury

Headaches caused by trauma are very dangerous. If the victim begins to vomit, he must be hospitalized immediately.

Only qualified specialists can provide assistance to him. Alarming symptoms of a head injury:

1. Strong headache. The victim may feel a pulsation in the temples.
2. Weakness. It is difficult for a person with a severe injury to get to his feet.
3. Memory loss. This symptom only appears in cases of very severe trauma.
4. Cramps.
5. Impaired auditory and visual function.
6. Nausea and vomiting.

Prevention

It is better to prevent a disease than to treat it. To avoid such unpleasant conditions as headache, nausea, vomiting, follow these rules:

1. Ensure healthy, full sleep. Sleep at least 8 hours a day. This will relieve pain caused by overexertion.
2. Give up bad habits. This will cleanse your body of harmful substances and improve blood supply to the brain.
3. Eat right.
4. Move more and breathe fresh air.

Following these simple recommendations will improve your health in a short period of time, and headache attacks accompanied by vomiting will become much less common.

Treatment of the disease

If a person exhibits these symptoms, he should undergo a medical examination.

However, if his illness arose due to food poisoning, alcohol intoxication or other non-life-threatening reasons, he can eliminate it at home.

Intense headaches will disappear after completing a home treatment course.

The patient can regain good health with the help of medications. For example, if the body is intoxicated, you need to take sorbents.

Which sorbents will help get rid of the disease? It all depends on the type of intoxication.

If a person is poisoned by poor-quality food, he should take Smecta or activated carbon. As for alcohol intoxication, in this case, it is recommended to take Enterosgel.

Once the toxin is removed from the body, the headache will go away.

If vomiting is severe, the patient should be given an antiemetic. After taking the medication, it should be insulated and kept at rest.

Why do you need insulation? The fact is that this illness is almost always accompanied by chills, and if a person is insulated, this will provide him with comfort, and, consequently, a quick recovery.

You can get rid of headaches caused by intoxication using folk remedies:

1. St. John's wort infusion. This remedy is recommended for medicinal purposes exclusively for women. Pour boiling water over a spoon of St. John's wort and leave for 20 minutes. After this, the infusion is filtered. It is recommended to drink it 4 times a day before each meal.
2. Mint tea. If a throbbing headache occurs as a result of psycho-emotional stress, mint tea will help not only eliminate it, but also calm the patient. The fact is that mint has a sedative effect on the body, so drinking this tea is recommended as a preventive measure against stress.

First aid for vomiting and diarrhea

Once in the gastrointestinal tract, microbes synthesize toxins that cause unpleasant symptoms. Poisoning can be infectious or non-infectious. Diseases that cause diarrhea and vomiting are also different. Therefore, first aid will be provided differently. But the main thing that needs to be done is to free the body from toxic substances.

Home remedies and traditional medicine

When the first symptoms appear, it is necessary to rinse the stomach with a weak solution of potassium permanganate and baking soda. Drink it and induce vomiting. Repeat the process until the vomit is free of impurities and clean.

Tip 1. Taking sorbents that help remove toxins is activated carbon, which reduces the absorption of heavy metals and other harmful substances. 1 tablet per 10 kg of human weight. Crush it and mix with water. There are white and black coal. The first drug not only removes toxins, but also preserves an important set of microelements in the body. The dosage is half as much, that is, 1 tablet per 20 kg of weight. For an adult, 2–3 tablets are enough, but it all depends on the degree of poisoning.