Amlodipine
The simultaneous use of amlodipine with powerful or moderate inhibitors of isoenzyme CYP3A4 (HIV protease inhibitors, azole antifungal agents (itraconazole and ketoconazole), macrolides, (for example, erythromycin or clarithromycin, verapamil and diltiazem) can lead to a significant increase in the concentration of amlodipine in the serum. Clinical manifestations of these pharmacokinetic variations may be more pronounced in elderly patients. In particular, in patients taking both clarithromycin and amlodipine, increased risk of lowering blood pressure. A thorough clinical observation and, if necessary, dose adjustment are recommended.
Use with caution inducers of isoenzyme CYP3A4 (eg, rifampicin, St. John's wort pitted), since it is possible to reduce the concentration of amlodipine in the blood plasma.
It is not recommended to apply amlodipine simultaneously with grapefruit or grapefruit juice in connection with the possible increase in the bioavailability of amlodipine, which contributes to the intensification of the hypotensive effect of the drug. Because of the possible development of hyperkalemia, BCCC should not be used, incl. amlodipine, from dantrolene intravenously in patients predisposed to malignant hyperthermia, as well as in the treatment of malignant hyperthermia.
With the repeated use of amlodipine in a dose of 10 mg and simvastatin in a dose of 80 mg, an increase in the exposure of simvastatin by 77% compared with simvastatin monotherapy. When used simultaneously with Amlodipine, the maximum daily dose of simvastatin should not exceed 20 mg.
With the simultaneous use of amlodipine and tacrolimus may increase tacrolimus concentration in the blood serum. In order to prevent the development of tacrolimus toxicity, it is required to regularly monitor the dose of tacrolimus in the blood serum during treatment and, if necessary, adjust its dose.
Studies of simultaneous use of amlodipine and cyclosporine in healthy volunteers and all patient groups, except for patients after kidney transplantation, were not performed. Various studies of amlodipine with cyclosporine in patients after kidney transplantation show that the use of this combination may not lead to any effect or increase the minimum concentration of cyclosporine to varying degrees to 40%.These data should be taken into account and the concentration of cyclosporine in this group of patients should be monitored while cyclosporine and amlodipine are used simultaneously.
With simultaneous application amlodipine can increase the system exposure tasononemine in the blood plasma. In such cases, regular monitoring of the tasononemine in the blood and a dose adjustment if necessary.
Corticosteroids can help reduce the antihypertensive effect of amlodipine and cause a delay in the fluid and sodium ions in the body as a result of their action.
Baclofen intensifies the antihypertensive effect, you should carefully monitor the level of blood pressure and, if necessary, adjust the dose of antihypertensive drugs.
Amifostine can enhance the antihypertensive effect of amlodipine.
Ritonavir increases plasma concentrations of BCCC, including amlodipine.
When combined with some tricyclic antidepressants may increase the antihypertensive effect of the drug.
Shown, that amlodipine does not cause clinically significant changes in pharmacokinetics atorvastatin, digoxin, warfarin, cimetidine, non-steroidal anti-inflammatory drugs (NSAIDs), special indomethacin.
Ethanol (alcoholic beverages): at a single and repeated application in a dose of 10 mg amlodipine has no significant effect on the pharmacokinetics of ethanol.
A single dose of 100 mg sildenafil in patients with essential hypertension does not affect the pharmacokinetic parameters of amlodipine.
When used with thiazide and "looped" diuretics, verapamil, ACE inhibitors, beta-blockers and nitrates it is possible to increase the anti-anginal and hypotensive effect of BCCI, as well as enhance their hypotensive effect when combined with alpha 1-adrenoblockers, isoflurane, and antipsychotics.
Combined application of BCCI and beta-adrenoreceptor blockers in patients with myocardial infarction can lead to its re-emergence and the development of severe heart failure.
With the simultaneous use of amlodipine with antiarrhythmic drugs that cause lengthening of the interval QT (eg, amiodarone, quinidine), it is possible to intensify the negative negative inotropic effect.
When combined with lithium preparations may increase the manifestation of symptoms of neurotoxicity (nausea, vomiting, diarrhea, ataxia, tremor, tinnitus).
Calcium preparations reduce the effect of BCCI.
Ramipril
Contraindicated combinations
The use of some high-strength membranes with a negatively charged surface (for example, polyacrylonitrile membranes) during hemodialysis or hemofiltration, the use of dextran sulfate in the apoplexy of LDL can lead to the development of severe anaphylactic reactions; if the patient requires these procedures, other types of membranes should be used (in the case of plasmapheresis and haemofiltration) or transfer the patient to other antihypertensive drugs.
As with other ACE inhibitors, joint use of ramipril with aliskiren and aliskiren-containing drugs is contraindicated in patients with diabetes mellitus or moderate or severe renal insufficiency (CC less than 60 ml / min).
Simultaneous application with other means acting on the renin-angiotensin-aldosterone system (RA AS) increases the risk of developing arterial hypotension, renal failure (including acute renal failure), hyperkalemia. It is recommended to regularly measure blood pressure, monitor kidney function and electrolyte levels in patients taking ramipril, as well as other drugs that affect the RAAS.
Simultaneous use of the drug and angiotensin II receptor antagonists in patients with diabetic nephropathy is contraindicated and is not recommended in other patients.
Combinations, which should be used with caution
Simultaneous application with potassium salts, potassium-sparing diuretics (for example, amiloride, triamterene, spironolactone), and drugs that increase the level of potassium in the blood serum (including co-trimoxazole, tacrolimus, ciclosporin, angiotensin II receptor antagonists), can lead to an increase in potassium in the blood serum (regular monitoring of potassium in the blood serum is required).
Hypotensive drugs (alfuzosin, doxazosin, prazozin, tamsulosin, terazosin), baclofen, diuretics, nitrates, tricyclic antidepressants, antipsychotics, sleeping pills, narcotic analgesics, means for general and local anesthesia, ethanol reinforce antihypertensive action of ramipril.
Vasopressornye sympathomimetics and other drugs that cause antihypertensive effects (for example, isoproterenol, dobutamine, dopamine, epinephrine) reduce the antihypertensive effect of ramipril, while regular monitoring of blood pressure is required.
Simultaneous application with allopurinol, procainamide, cytostatics, immunosuppressants, corticosteroids (glucocorticosteroids and mineralocorticosteroids) and other means that can affect hematologic indices, increases the risk of developing leukopenia. The simultaneous use of ramipril with corticosteroids is not recommended. Inhibitors of RAAS may reduce excretion lithium salts. Simultaneous use with lithium salts leads to an increase in the concentration of lithium in the blood serum and an increase in the cardio- and neurotoxic effects of lithium. It is recommended to monitor the concentration of lithium in the blood serum. Ramipril increases hypoglycemic effect hypoglycemic agents (insulin, hypoglycemic agents for oral administration (derivatives of sulfonylureas)) up to the development of hypoglycemia. It is necessary to control the concentration of glucose.
Dipeptidyl peptidase type IV inhibitors-IV) (glyptins), eg, sitagliptin, saxagliptin, vildagliptin, linogliptin, can lead to an increased incidence of angioedema.
The simultaneous use of ramipril with inhibitors mTOR (mammalian Target of Rapamycin - The target of rapamycin in mammalian cells), for example, with sirolimus, tamsyrolimus, everolimus may lead to an increased risk of angioedema.
With simultaneous use of ACE inhibitors and neutral endopeptidase (NEP) inhibitors, such as racecadotril, reported increased risk of angioedema.
Other interactions
Non-steroidal anti-inflammatory drugs (NSAIDs) (eg, acetylsalicylic acid (more than 3 g / day), inhibitors of cyclooxygenase-2 (COX2)) can weaken the antihypertensive effect of ramipril, as well as cause renal dysfunction, sometimes leading to the development of renal failure.
Heparin can increase the potassium content in the serum.
Sodium chloride can weaken the effect of ramipril.
Do not use ethanol during treatment with ramipril (increased inhibitory effect of ethanol on the central nervous system (CNS)).
Estrogens weaken the antihypertensive effect (fluid retention). Interaction estramustine may increase the risk of developing angioedema.
Desensitizing therapy with hypersensitivity to insect venoms. ACE inhibitors, including ramipril, increase the likelihood of developing severe anaphylactic or anaphylactoid reactions to insect venoms. It is assumed that this effect can occur when other allergens are used.