Anaprilin: a detailed description of the drug, the effect on the body, and analogues of pills for pressure

Focused research to find effective medications for relief symptoms of hypertension, angina pectoris and diseases of the cardiovascular system, began only in 50's years of the last century. And in 1970, the drug Anaprilin appeared in cardiological practice. Its active ingredient is the compound propranolol, which belongs to the group of beta-blockers.

What are adrenergic receptors? This is the name of the proteins located on the outside of the cell membrane. They have the ability to recognize and bind the main mediators of the sympathetic division of the autonomic nervous system - adrenaline and norepinephrine. They are produced in large quantities during stress, neurosis, pain, anxiety, fear.

Physiologically, their effect is manifested in the form of an increase in blood pressure, an increase in heart rate, and pupil dilation. At the same time, under the influence of adrenaline, the smooth muscles of the respiratory and digestive system are relaxed.

Adrenergic receptors are present in all tissues and cells. They are involved in the regulation of metabolic processes, the secretion of biologically active substances, muscle contractions and vascular tone. The classification of adrenergic receptors is based on differences in their localization in the body and physical and chemical properties. So, there are α- and β-adrenergic receptors.

Beta-adrenergic receptors, in turn, are divided into the following groups:

• β1 - adrenergic receptors are located mainly in the heart. They are equally sensitive to adrenaline and norepinephrine and cause tachycardia and increased myocardial contractions.
• β2 - adrenergic receptors are localized mainly in the bronchi, smooth muscle cells of the vessel walls, skeletal muscles, pancreas. Their stimulation causes the secretion of insulin, expansion of the lumen of the bronchi and blood vessels, and relaxation of muscles. This type of receptor is more sensitive to adrenaline.
• β3 - adrenergic receptors are located in adipose tissue on the membrane of its cells, adipocytes. They have an affinity for norepinephrine, and under its influence, lipolysis processes are enhanced, and heat production increases. The number of β3 - adrenergic receptors in the body is variable, their concentration increases with weight gain, diabetes mellitus.

Adrenergic blockers, including Anaprilin, bind to these receptors and prevent their reaction with adrenaline and norepinephrine.

These drugs are distinguished by their spectrum of action on:

• Cardioselective drugs. They predominantly affect β1 receptors in the heart.
• Non-selective drugs. They have an indiscriminate effect on the β1 and β2 types of receptors. It is to this group that Anaprilin and its analogues, containing pindolol, oxprenolol, belong).

In most cases, Anaprilin is taken orally (in the form of tablets), if necessary, it is administered parenterally (in the form of injections). The drug belongs to lipophilic beta-blockers, is rapidly and almost completely absorbed from the gastrointestinal tract (more than 90%), however, its bioavailability (that is, the actual amount of active substance supplied directly to the target organ) is only 30%. The half-life is from 2 to 5 hours, which ensures the frequency of application of the drug throughout the day (in accordance with instruction it should be drunk 2-3 times a day).

Anaprilin is metabolized in the liver (to 80-100%) and is not excreted through the kidneys. This feature of the drug should be taken into account when treating elderly patients with cirrhosis and other similar disorders. Also, doctors use Anaprilin with caution together with drugs that inhibit the activity of microsomal liver enzymes.

Anaprilin easily crosses the blood-brain barrier. Several side effects of its use are associated with this property. Thanks to this effect, the positive effect of the drug on the prevention and relief of migraine attacks is noted.

According to doctors, Anaprilin has the following effect:

• Antianginal. The myocardium "gets" only 4% of the total cardiac output, and this muscle consumes up to 11% of the oxygen that has entered the body during inhalation. Filling with blood, and, accordingly, the supply of oxygen necessary for normal functioning, occurs during diastole, in other words, relaxation of the myocardium. It is clear that with a rapid heartbeat, arrhythmias (especially those characterized by extraordinary contractions of extrasystoles), the period of diastole becomes shorter, and blood circulation decreases. Anaprilin reduces the need for oxygen in the muscle cells of the organ, thereby normalizing its work.
• Antihypertensive. The mechanism of blood pressure lowering by drugs of the beta-blocker group is very complex. This is mainly achieved by decreasing cardiac output and relaxing peripheral vessels. Therefore, at the beginning of treatment, the vessels "respond" with a short-term increase in tone, and then there is a persistent decrease in pressure to normal values. In addition, the blockade of β-receptors in the kidney leads to a decrease in the secretion of renin, which stimulates the synthesis of angiotensin II, which causes vasoconstriction. Anaprilin is prescribed for hypertension to prevent hypertensive crises.
• Antiarrhythmic. This effect is due to a decrease in the impulses of the sympathetic nervous system and the degree of myocardial excitability.
• Membrane stabilizing. It consists in reducing the permeability of membranes for sodium and potassium ions. However, in the usual therapeutic doses of Anaprilin, this effect is not manifested.

In addition to normalizing heart rate and blood pressure, this drug is from the group of adrenergic blockers also used for tremors of the limbs (due to its effect on skeletal muscles) and hemangioma.

This disease is more typical for young children and usually doctors take a wait-and-see tactic, since a benign tumor passes on its own to 3-5 years old. However, if such a formation is too large, Anaprilin is prescribed. It increases the overall resistance of peripheral vessels, thereby reducing the hemangioma.

Anaprilin tablets and other forms of drug release, indications and restrictions for use

Usually doctors prescribe Anaprilin in pill form.

In addition to the main active ingredient propranolol (more precisely, its hydrochloride salt), this dosage form contains the following components:

• sugar;
• talc;
• potato starch;
• calcium stearate.

Anaprilin tablets are produced with a dosage of the active ingredient of 10 mg and 40 mg. Also, this drug is available in the form of a 0.25% solution for parenteral administration. It is usually given by drip only in the cardiology department.

The main indications for the appointment of Anaprilin are:

• cardiac ischemia and its main symptoms in the form of various forms of angina pectoris;
• condition after a heart attack;
• high blood pressure hypertensive crisis;
• chronic heart failure (in combination with diuretics, angiotensin-converting enzyme inhibitors and glycosides);
• cardiac arrhythmias: tachycardia, arrhythmias of various etiology and symptoms;
• endocrine pathologies of the thyroid gland, with a thyrotoxic crisis, Anaprilin is used not in the form of tablets, but is administered intravenously;
• lesions of the central nervous system: withdrawal symptoms, tremors, including senile, severe anxiety;
• prevention of migraine attacks.

Absolute contraindications to the use of Anaprilin tablets are:

• bradycardia and arrhythmia associated with sinus node conduction disturbances;
• atrioventricular block II-III degree (with the exception of patients with an established artificial pacemaker);
• cardiogenic shock;
• decompensation of heart failure;
• pulmonary edema;
• arterial hypotension with a systolic ("upper") pressure below 110 mm Hg;
• chronic obstructive diseases of the lower respiratory tract.

With caution, treatment with Anaprilin tablets is carried out with violations of peripheral circulation. These are vasomotor rhinitis, Raynaud's disease, obliterating pathologies of the arteries of the lower extremities. Also, the drug is not recommended to be prescribed for diabetes mellitus, pheochromocytoma and depressive conditions. In these cases, preference is given to cardioselective beta-blockers (Bisoprolol, Metoprolol, Nevibolol, Carvedilol).

Anaprilin medicine: dosing regimen for various diseases

Given the wide range of uses of the Anaprilin drug, there cannot be a universal dosage suitable for every patient.

Therefore, the amount of the drug taken depends on the stage of the disease, the tolerance of the drug and the patient's condition.

The dosage regimen of the drug Anaprilin is as follows:

• with an acute attack of arrhythmia, myocardial ischemia, thyrotoxic crisis: intravenous propranolol solution in the form of its hydrochloride salt 1 mg within a minute (if necessary, the administration is repeated after 2 minutes). The use of Anaprilin in this case is carried out under the control of the heart rate and blood pressure level;
• with hypertension: 80 mg twice a day, then the dose may be increased to 120 mg per day;
• for arrhythmias: Anaprilin for tachycardia is prescribed from 10 to 30 mg up to 4 times a day;
• with stenosis of the aorta: by 20-40 mg three times a day;
• with angina pectoris, tremor, for the prevention of migraine attacks: the initial dose is 20-40 mg3-4 once a day, usually the same amount of the drug and left for further treatment, but in some cases it can be increased to 240 mg per day;
• after myocardial infarction: if the drug is taken from 5 to 21 days after the attack, it is prescribed for 2-3 days at a dosage of 40 mg 4 times a day, then 80 mg twice a day.

Also, the antiarrhythmic drug Anaprilin is prescribed for other conditions. So, in preparation for surgery with pheochromocytoma, it is used according to 30-60 mg three days before surgery. Also, this beta-blocker is used in obstetrics to stimulate labor, 20 mg every 30 minutes 4-6 times. The medicine Anaprilin is also used to prevent bleeding after childbirth, 20 mg three times a day for 3-5 days.

Anaprilin drug: the possibility of use during pregnancy and lactation, side effects

The drug Anaprilin has an indiscriminate effect on β-adrenergic receptors, which is associated with its side effects. Accordingly, this medicine, like its analogues (Obzidan, Inderal), is contraindicated in pregnancy.

Impact on the smooth muscles of the uterus and the vessels feeding it causes serious complications in the development of the fetus. In addition, propranolol also passes into breast milk and can cause severe bradycardia, hypotension, and even death.

Therefore, in the treatment of arterial hypertension, sinus tachycardia during pregnancy, preference is given to other groups of drugs, in particular, calcium channel blockers.

However, taking any medication for the treatment of cardiovascular diseases is not combined with lactation. They are prescribed for a long time, therefore, from the very birth of the child, I recommend transferring to artificial feeding.

The non-selective beta-blocker propranolol (Anaprilin) ​​causes a lot of side effects.

The most significant of them are:

• bradycardia with a decrease in the rhythm of contractions to 50 beats per minute;
• supraventricular arrhythmia associated with sinus node weakness;
• blockade of the atrioventricular complex of the cardiac conduction system;
• lowering blood pressure;
• exacerbation of bronchial asthma or other obstructive pulmonary disease;
• hypoglycemia, especially in diabetes mellitus with the simultaneous administration of insulin or oral hypoglycemic drugs;
• lipid metabolism disorders (increased concentration of triglycerides and high density lipoproteins);
• decrease in sexual function in men (from 11 to 28% with prolonged use of the drug Anaprilin);
• exacerbation of Raynaud's syndrome;
• itching, rashes, increased symptoms of psoriasis;
• adverse effects on the central nervous system (especially pronounced in the elderly). These are sleepiness during the day and insomnia at night, nightmares, hallucinations, mental depression.

Withdrawal syndrome deserves special attention. It usually occurs with prolonged use of propranolol (Anaprilin), but sometimes a few days of therapy are enough. Its development is associated with an increase in the density of β-adrenergic receptors and the effect on the metabolism of thyroid hormones.

Withdrawal symptoms are:

• anxiety;
• tremor;
• a sharp increase in blood pressure;
• tachycardia;
• attacks of angina pectoris;
• negative changes on the cardiogram.

The most severe consequences of withdrawal are heart attacks and sudden death.

When combined with other drugs, the following points must be considered:

• Antacids based on aluminum compounds reduce the absorption of Anaprilin from the gastrointestinal tract and reduce its plasma concentration.
• Phenytoin, Phenobarbital accelerate the metabolism of the drug, as a result of which it is excreted faster.
• Cimetidine, Hydralazine increase the bioavailability of Anaprilin.
• Calcium channel blockers and other antiarrhythmic drugs require adjustment of the dosage of the medication due to the risk of atrioventricular blockade and dysfunction of the sinus node, at the same time, Anaprilin reduces the frequency and severity of side effects from the use of calcium antagonists from the group dihydropyridines.
• Antihypertensive drugs enhance the antihypertensive effect of the drug Anaprilin.
• Non-steroidal anti-inflammatory drugs reduce the effectiveness of the drug.
• Organic nitrates, simultaneous use with Anaprilin improves its anti-ischemic effect in angina pectoris, this beta-blocker eliminates the risk of increased heart rate after ingestion nitrates.

The risk of drug overdose, if all the doctor's recommendations are followed, is small. But improper storage, uncontrolled joint use with other drugs can lead to an increase in the concentration of synthetic propranolol (Anaprilin) ​​in the blood. This is manifested by symptoms such as dizziness, arrhythmia, bradycardia, heart failure, cyanotic skin coloration as a result of circulatory disorders in peripheral vessels, convulsions, collapse, impairment breathing.

First of all, in case of an overdose with Anaprilin, gastric lavage should be performed and an adsorbent should be given. Then the therapy is carried out in the conditions of honey. institutions aimed at relieving the listed symptoms.

Anaprilin pressure tablets: analogues, prices and reviews

The cost of tablets from Anaprilin pressure ranges from 20 to 80 rubles. It depends on the dosage and the number of pills in the package.

This drug can be replaced by its analogs:

• Obzidan, Actavis USA;
• Inderal, ICI UK;
• Propranolol, Nycomed Switzerland;
• Propranobene, Merkle GmbH, Austria - Germany.

However, to date, the listed analogues of Anaprilin are not available in the Russian pharmacy network. It is also difficult to obtain propranolol in the form of a solution for injection, it is only available in hospitals.

The opinions of doctors about this drug differ.

On the one hand, Anaprilin pressure pills are replacing more modern cardioselective beta-blockers, which cause fewer side effects.

On the other hand, propranolol is the most studied representative of this group of medicines. The low price also plays an important role, which is especially important for elderly patients.