Capopharm (Tablets) Instructions for Use

Marketing Authorization Holder

Pharmacor Production, LLC (Russia)

ATC Code

C09AA01 (Captopril)

Active Substance

Captopril (Rec.INN registered by WHO)

Dosage Form

Capopharm

Tablets 25 mg: 14, 20, 28, 40, 100 or 200 pcs.

Dosage Form, Packaging, and Composition

10 pcs. – blister packs (2) – cardboard packs.
10 pcs. – blister packs (4) – cardboard packs.
14 pcs. – blister packs (1) – cardboard packs.
14 pcs. – blister packs (2) – cardboard packs.
100 pcs. – polyethylene bottles (1) – cardboard packs.
200 pcs. – polyethylene bottles (1) – cardboard packs.

Clinical-Pharmacological Group

ACE inhibitor

Pharmacotherapeutic Group

ACE blocker

Pharmacological Action

Antihypertensive agent, ACE inhibitor. The mechanism of the antihypertensive action is associated with competitive inhibition of ACE activity, which leads to a decrease in the rate of conversion of angiotensin I to angiotensin II (which has a pronounced vasoconstrictive effect and stimulates the secretion of aldosterone in the adrenal cortex). Furthermore, Captopril appears to affect the kinin-kallikrein system, preventing the breakdown of bradykinin. The hypotensive effect is independent of plasma renin activity; a decrease in blood pressure is noted at normal and even reduced hormone concentrations, which is due to the effect on the tissue RAAS. It increases coronary and renal blood flow.

Due to its vasodilatory action, it reduces total peripheral vascular resistance (afterload), pulmonary capillary wedge pressure (preload) and resistance in the pulmonary vessels; it increases cardiac output and exercise tolerance. With long-term use, it reduces the severity of left ventricular myocardial hypertrophy, prevents the progression of heart failure and slows the development of left ventricular dilatation. It helps reduce sodium levels in patients with chronic heart failure. It dilates arteries more than veins. It improves blood supply to the ischemic myocardium. It reduces platelet aggregation.

It lowers the tone of the efferent arterioles of the renal glomeruli, improving intraglomerular hemodynamics, and prevents the development of diabetic nephropathy.

Pharmacokinetics

After oral administration, at least 75% is rapidly absorbed from the gastrointestinal tract. Concurrent food intake reduces absorption by 30-40%. C_max in blood plasma is reached within 30-90 minutes. Protein binding, predominantly with albumin, is 25-30%. It is excreted in breast milk. It is metabolized in the liver to form captopril disulfide dimer and captopril-cysteine disulfide. The metabolites are pharmacologically inactive.

T_1/2 is less than 3 hours and increases in renal failure (3.5-32 hours). More than 95% is excreted by the kidneys, 40-50% unchanged, the remainder as metabolites.

It accumulates in chronic renal failure.

Indications

Arterial hypertension (including renovascular), chronic heart failure (as part of combination therapy), left ventricular dysfunction after myocardial infarction in clinically stable patients. Diabetic nephropathy in type 1 diabetes mellitus (with albuminuria greater than 30 mg/day).

ICD codes

Dosage Regimen

Take orally, one hour before meals.

For arterial hypertension, initiate therapy at 12.5 mg twice daily. Titrate the dose gradually at 1-2 week intervals. The usual maintenance dose is 25 mg twice daily. The maximum dose is 50 mg twice daily.

For chronic heart failure, start with 6.25 mg or 12.5 mg three times daily. Increase to a target maintenance dose of 25 mg three times daily, if tolerated.

For post-myocardial infarction left ventricular dysfunction, begin with 6.25 mg as a single dose. Then administer 12.5 mg three times daily. Increase to 25 mg three times daily over several weeks, and further to a maximum of 50 mg three times daily, as tolerated.

For diabetic nephropathy, the recommended dose is 20-25 mg three times daily.

In patients with renal impairment, reduce the daily dose. For creatinine clearance 10-50 ml/min, administer 75% of the usual dose. For creatinine clearance below 10 ml/min, administer 50% of the usual dose.

For elderly patients, initiate therapy at 6.25 mg twice daily and titrate cautiously.

Do not exceed the maximum daily dose of 150 mg.

Adverse Reactions

From the central and peripheral nervous system dizziness, headache, feeling of fatigue, asthenia, paresthesia.

From the cardiovascular system orthostatic hypotension; rarely – tachycardia.

From the digestive system nausea, loss of appetite, taste disturbance; rarely – abdominal pain, diarrhea or constipation, increased activity of liver transaminases, hyperbilirubinemia; signs of hepatocellular damage (hepatitis); in some cases – cholestasis; in isolated cases – pancreatitis.

From the hematopoietic system rarely – neutropenia, anemia, thrombocytopenia; very rarely in patients with autoimmune diseases – agranulocytosis.

From metabolism hyperkalemia, acidosis.

From the urinary system proteinuria, impaired renal function (increased blood urea and creatinine concentrations).

From the respiratory system dry cough.

Allergic reactions skin rash; rarely – angioedema, bronchospasm, serum sickness, lymphadenopathy; in some cases – appearance of antinuclear antibodies in the blood.

Contraindications

Pregnancy, lactation period, age under 18 years, hypersensitivity to captopril and other ACE inhibitors.

Use in Pregnancy and Lactation

It should be borne in mind that the use of captopril in the second and third trimesters of pregnancy can cause developmental disorders and fetal death. If pregnancy is confirmed, Captopril should be discontinued immediately.

Captopril is excreted in breast milk. If use during lactation is necessary, the issue of discontinuing breastfeeding should be decided.

Use in Hepatic Impairment

It should be used with caution in hepatic insufficiency.

Use in Renal Impairment

It should be used with caution in patients after kidney transplantation, renal insufficiency.

In case of impaired renal function, the daily dose should be reduced.

Concomitant use of potassium-sparing diuretics and potassium preparations should be avoided in patients with renal insufficiency.

Pediatric Use

Contraindicated under 18 years of age. The use of captopril in children is possible only in case of ineffectiveness of other drugs.

Geriatric Use

It should be used with caution in elderly patients.

Special Precautions

Use with caution in cases of history of angioedema during therapy with ACE inhibitors, hereditary or idiopathic angioedema, with aortic stenosis, cerebro- and cardiovascular diseases (including cerebrovascular insufficiency, coronary artery disease, coronary insufficiency), severe autoimmune connective tissue diseases (including systemic lupus erythematosus, scleroderma), with bone marrow depression, with diabetes mellitus, hyperkalemia, bilateral renal artery stenosis, stenosis of the artery of a solitary kidney, condition after kidney transplantation, renal and/or hepatic insufficiency, against the background of a sodium-restricted diet, conditions accompanied by a decrease in circulating blood volume (including diarrhea, vomiting), in elderly patients.

In patients with chronic heart failure, Captopril should be used under careful medical supervision.

Arterial hypotension occurring during surgery while taking captopril is corrected by volume replacement.

Concomitant use of potassium-sparing diuretics and potassium preparations should be avoided, especially in patients with renal insufficiency and diabetes mellitus.

When taking captopril, a false-positive reaction may be observed in the urine test for acetone.

The use of captopril in children is possible only in case of ineffectiveness of other drugs.

Effect on ability to drive vehicles and operate machinery

Caution is required when driving vehicles or performing other work requiring increased attention, because dizziness is possible, especially after the initial dose of captopril.

Drug Interactions

With simultaneous use with immunosuppressants, cytostatics, the risk of leukopenia increases.

With simultaneous use with potassium-sparing diuretics (including spironolactone, triamterene, amiloride), potassium preparations, salt substitutes and dietary supplements containing potassium, hyperkalemia may develop (especially in patients with impaired renal function), because ACE inhibitors reduce aldosterone content, which leads to potassium retention in the body against the background of limited potassium excretion or its additional intake.

With simultaneous use of ACE inhibitors and NSAIDs, the risk of impaired renal function increases; hyperkalemia is rarely observed.

With simultaneous use with “loop” diuretics or thiazide diuretics, pronounced arterial hypotension is possible, especially after taking the first dose of the diuretic, apparently due to hypovolemia, which leads to a transient increase in the antihypertensive effect of captopril. There is a risk of hypokalemia. Increased risk of impaired renal function.

With simultaneous use with anesthetics, severe arterial hypotension is possible.

With simultaneous use with azathioprine, anemia may develop, which is due to inhibition of erythropoietin activity under the influence of ACE inhibitors and azathioprine. Cases of leukopenia have been described, which may be associated with additive inhibition of bone marrow function.

With simultaneous use with allopurinol, the risk of hematological disorders increases; cases of severe hypersensitivity reactions, including Stevens-Johnson syndrome, have been described.

With simultaneous use of aluminum hydroxide, magnesium hydroxide, magnesium carbonate, the bioavailability of captopril decreases.

Acetylsalicylic acid in high doses may reduce the antihypertensive effect of captopril. It has not been definitively established whether acetylsalicylic acid reduces the therapeutic efficacy of ACE inhibitors in patients with coronary artery disease and heart failure. The nature of this interaction depends on the course of the disease. Acetylsalicylic acid, by inhibiting COX and prostaglandin synthesis, can cause vasoconstriction, which leads to a decrease in cardiac output and worsening of the condition in patients with heart failure receiving ACE inhibitors.

There are reports of an increase in the plasma concentration of digoxin with simultaneous use of captopril with digoxin. The risk of drug interaction is increased in patients with impaired renal function.

With simultaneous use with indomethacin, ibuprofen, the antihypertensive effect of captopril decreases, apparently due to inhibition of prostaglandin synthesis under the influence of NSAIDs (which are believed to play a certain role in the development of the hypotensive effect of ACE inhibitors).

With simultaneous use with insulins, hypoglycemic agents derivatives of sulfonylurea, hypoglycemia may develop due to increased glucose tolerance.

With simultaneous use of ACE inhibitors and interleukin-3, there is a risk of arterial hypotension.

With simultaneous use with interferon alfa-2a or interferon beta, cases of severe granulocytopenia have been described.

When switching from clonidine to Captopril, the antihypertensive effect of the latter develops gradually. In case of sudden withdrawal of clonidine in patients receiving Captopril, a sharp increase in blood pressure is possible.

With simultaneous use of lithium carbonate, the concentration of lithium in the blood serum increases, accompanied by symptoms of intoxication.

With simultaneous use with minoxidil, sodium nitroprusside, the antihypertensive effect is enhanced.

With simultaneous use with orlistat, a decrease in the effectiveness of captopril is possible, which can lead to an increase in blood pressure, hypertensive crisis; a case of cerebral hemorrhage has been described.

With simultaneous use of ACE inhibitors with pergolide, an enhancement of the antihypertensive effect is possible.

With simultaneous use with probenecid, the renal clearance of captopril decreases.

With simultaneous use with procainamide, the risk of leukopenia may increase.

With simultaneous use with trimethoprim, there is a risk of hyperkalemia, especially in patients with impaired renal function.

With simultaneous use with chlorpromazine, there is a risk of orthostatic hypotension.

With simultaneous use with cyclosporine, there are reports of the development of acute renal failure, oliguria.

It is believed that a decrease in the effectiveness of antihypertensive agents is possible with simultaneous use with erythropoietins.

Storage Conditions

Store at 2°C (36°F) to 25°C (77°F). Keep in original packaging, protected from light. Keep out of reach of children.

Dispensing Status

Rx Only

Important Safety Information

This information is for educational purposes only and does not replace professional medical advice. Always consult your doctor before use. Dosage and side effects may vary. Use only as prescribed.