Clinical data | |
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Trade names | Tanatril, others |
AHFS/Drugs.com | UK Drug Information |
Routes of administration | By mouth |
ATC code | |
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Pharmacokinetic data | |
Bioavailability | 42% (imidaprilat) |
Protein binding | 85% (imidapril), 53% (imidaprilat) |
Metabolites | Imidaprilat (active metabolite) |
Elimination half-life | 2 hrs (imidapril), 24 hrs (imidaprilat) |
Excretion | 40% Kidney, 50% bile duct |
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Chemical and physical data | |
Formula | C20H27N3O6 |
Molar mass | 405.451 g·mol−1 |
3D model (JSmol) | |
Melting point | 139 to 140 °C (282 to 284 °F) |
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Imidapril, sold under the brand name Tanatril among others, is an ACE inhibitor used as an antihypertensive drug and for the treatment of chronic heart failure. [1]
It was patented in 1982 and approved for medical use in 1993. [2]
Contraindications are hypersensitivity against ACE inhibitors, especially if it has resulted in angioedema; idiopathic or hereditary angioedema; kidney failure; the second and third trimesters in pregnancy; and combination with the drug aliskiren in people with diabetes. [3] [4]
Common adverse effects are similar to other antihypertensive drugs and include headache, vertigo, and drowsiness. A dry cough is common as with all ACE inhibitors. [3] [4] Other possible adverse effects are described at ACE inhibitor#Adverse effects.
No interaction studies have been conducted except with digoxin, which slightly decreases imidapril levels, possibly because it reduces its absorption from the gut. Other potential interactions are not well studied: Rifampicin reduces the activation of imidapril to its active metabolite imidaprilat. Like other ACE inhibitors, imidapril increases potassium levels in the blood and can therefore cause hyperkalaemia, especially when combined with potassium-sparing diuretics or potassium substitution. Other diuretics, vasodilators, tricyclic antidepressants and antipsychotics can add to the antihypertensive effect of imidapril. Lithium can reach toxic levels when combined with imidapril. The effect of antidiabetic drugs can be increased, potentially causing hypoglycaemia (low blood glucose levels). [3] [4]
About 70% of the ingested imidapril is absorbed quickly from the gut; this percentage is reduced significantly when taken with a fatty meal. It reaches highest blood plasma concentrations after two hours and has a biological half-life of two hours. The substance is a prodrug and is activated to imidaprilat, which reaches highest plasma concentrations after 7 hours, has an initial half-life of 7 to 9 hours and a terminal half-life of more than 24 hours. The absolute bioavailability of imidaprilat is 42%. [3] [4]
About 40% of the drug is excreted via the urine and 50% via the bile and faeces. [3] [4]
Angiotensin-converting-enzyme inhibitors are a class of medication used primarily for the treatment of high blood pressure and heart failure. This class of medicine works by causing relaxation of blood vessels as well as a decrease in blood volume, which leads to lower blood pressure and decreased oxygen demand from the heart.
Captopril, sold under the brand name Capoten among others, is an angiotensin-converting enzyme (ACE) inhibitor used for the treatment of hypertension and some types of congestive heart failure. Captopril was the first oral ACE inhibitor found for the treatment of hypertension. It does not cause fatigue as associated with beta-blockers. Due to the adverse drug event of causing hyperkalemia, as seen with most ACE Inhibitors, the medication is usually paired with a diuretic.
Antihypertensives are a class of drugs that are used to treat hypertension. Antihypertensive therapy seeks to prevent the complications of high blood pressure, such as stroke, heart failure, kidney failure and myocardial infarction. Evidence suggests that reduction of the blood pressure by 5 mmHg can decrease the risk of stroke by 34% and of ischaemic heart disease by 21%, and can reduce the likelihood of dementia, heart failure, and mortality from cardiovascular disease. There are many classes of antihypertensives, which lower blood pressure by different means. Among the most important and most widely used medications are thiazide diuretics, calcium channel blockers, ACE inhibitors, angiotensin II receptor antagonists (ARBs), and beta blockers.
Enalapril, sold under the brand name Vasotec among others, is an ACE inhibitor medication used to treat high blood pressure, diabetic kidney disease, and heart failure. For heart failure, it is generally used with a diuretic, such as furosemide. It is given by mouth or by injection into a vein. Onset of effects are typically within an hour when taken by mouth and last for up to a day.
Indapamide is a thiazide-like diuretic drug used in the treatment of hypertension, as well as decompensated heart failure. Combination preparations with perindopril are available. The thiazide-like diuretics reduce risk of major cardiovascular events and heart failure in hypertensive patients compared with hydrochlorothiazide with a comparable incidence of adverse events. Both thiazide diuretics and thiazide-like diuretics are effective in reducing risk of stroke. Both drug classes appear to have comparable rates of adverse effects as other antihypertensives such as angiotensin II receptor blockers and dihydropyridine calcium channel blockers and lesser prevalence of side-effects when compared to ACE-inhibitors and non-dihydropyridine calcium channel blockers.
Amiloride, sold under the trade name Midamor among others, is a medication typically used with other medications to treat high blood pressure or swelling due to heart failure or cirrhosis of the liver. Amiloride is classified as a potassium-sparing diuretic. Amiloride is often used together with another diuretic, such as a thiazide or loop diuretic. It is taken by mouth. Onset of action is about two hours and it lasts for about a day.
Chlortalidone, also known as chlorthalidone, is a thiazide-like diuretic drug used to treat high blood pressure, swelling, diabetes insipidus, and renal tubular acidosis. Because chlortalidone is effective in most patients with high blood pressure, it is considered a preferred initial treatment. It is also used to prevent calcium-based kidney stones. It is taken by mouth. Effects generally begin within three hours and last for up to three days. Long-term treatment with chlortalidone is more effective than hydrochlorothiazide for prevention of heart attack or stroke.
Thiazide refers to both a class of sulfur-containing organic molecules and a class of diuretics based on the chemical structure of benzothiadiazine. The thiazide drug class was discovered and developed at Merck and Co. in the 1950s. The first approved drug of this class, chlorothiazide, was marketed under the trade name Diuril beginning in 1958. In most countries, thiazides are the least expensive antihypertensive drugs available.
Lisinopril is a medication belonging to the drug class of angiotensin-converting enzyme (ACE) inhibitors and is used to treat high blood pressure, heart failure, and heart attacks. For high blood pressure it is usually a first-line treatment. It is also used to prevent kidney problems in people with diabetes mellitus. Lisinopril is taken by mouth. Full effect may take up to four weeks to occur.
Ramipril, sold under the brand name Altace among others, is an ACE inhibitor type medication used to treat high blood pressure, heart failure, and diabetic kidney disease. It can also be used as a preventative medication in patients over 55 years old to reduce the risk of having a heart attack, stroke or cardiovascular death in patients shown to be at high risk, such as some diabetics and patients with vascular disease. It is a reasonable initial treatment for high blood pressure. It is taken by mouth.
Quinapril, sold under the brand name Accupril among others, is a medication used to treat high blood pressure (hypertension), heart failure, and diabetic kidney disease. It is a reasonable initial treatment for high blood pressure. It is taken by mouth.
Benazepril, sold under the brand name Lotensin among others, is a medication used to treat high blood pressure, heart failure, and diabetic kidney disease. It is a reasonable initial treatment for high blood pressure. It is taken by mouth. Versions are available as the combinations benazepril/hydrochlorothiazide and benazepril/amlodipine.
Metolazone is a thiazide-like diuretic marketed under the brand names Zytanix, Metoz, Zaroxolyn, and Mykrox. It is primarily used to treat congestive heart failure and high blood pressure. Metolazone indirectly decreases the amount of water reabsorbed into the bloodstream by the kidney, so that blood volume decreases and urine volume increases. This lowers blood pressure and prevents excess fluid accumulation in heart failure. Metolazone is sometimes used together with loop diuretics such as furosemide or bumetanide, but these highly effective combinations can lead to dehydration and electrolyte abnormalities.
Aliskiren is the first in a class of drugs called direct renin inhibitors. It is used for essential (primary) hypertension. While used for high blood pressure, other better studied medications are typically recommended due to concerns of higher side effects and less evidence of benefit.
Acipimox is a niacin derivative used as a lipid-lowering agent. It reduces triglyceride levels and increases HDL cholesterol. It may have less marked adverse effects than niacin, although it is unclear whether the recommended dose is as effective as standard doses of niacin.
Acemetacin is a non-steroidal anti-inflammatory drug (NSAID) used for the treatment of osteoarthritis, rheumatoid arthritis, lower back pain, and relieving post-operative pain. It is manufactured by Merck KGaA under the tradename Emflex, and is available in the UK and other countries as a prescription-only drug.
Racecadotril, also known as acetorphan, is an antidiarrheal medication which acts as a peripheral enkephalinase inhibitor. Unlike other opioid medications used to treat diarrhea, which reduce intestinal motility, racecadotril has an antisecretory effect — it reduces the secretion of water and electrolytes into the intestine. It is available in France and other European countries as well as most of South America and some South East Asian countries, but not in the United States. It is sold under the tradename Hidrasec, among others. Thiorphan is the active metabolite of racecadotril, which exerts the bulk of its inhibitory actions on enkephalinases.
Xipamide is a sulfonamide diuretic drug marketed by Eli Lilly under the trade names Aquaphor and Aquaphoril. It is used for the treatment of oedema and hypertension.
Azilsartan, sold under the brand name Edarbi among others, is used for the treatment of hypertension. It is used as the prodrug azilsartan medoxomil, is an angiotensin II receptor antagonist, and was developed by Takeda.
Butizide is a diuretic of the thiazide class.