Exforge HCT (amlodipine / hydrochlorothiazide / valsartan) Disease Interactions

There are 18 disease interactions with Exforge HCT (amlodipine / hydrochlorothiazide / valsartan):

Ar Antagonists (Includes Exforge HCT) ↔ Hypotension

Severe Potential Hazard, High plausibility

Applies to: Dehydration, hemodialysis, Hyponatremia

Angiotensin II receptor (AR) antagonists can cause symptomatic hypotension in patients with an activated renin-angiotensin system, such as volume- and/or sodium-depleted patients. Therapy with AR antagonists should be administered cautiously in such patients and in those predisposed to hypovolemic or hyponatremic states (e.g., patients on diuretic therapy, especially if high doses were used or if recently instituted; those on dietary salt restriction; renal dialysis patients). Volume and/or sodium depletion should be corrected prior to initiating therapy with AR antagonists, and the patient should be hemodynamically stable. Ideally, patients at risk for excessive hypotension should initiate AR antagonist therapy under close medical supervision, preferably with a lower dose, and followed closely for the first 2 weeks of treatment and whenever the dosage of AR antagonist or diuretic is increased.

References

  1. "Product Information. Cozaar (losartan)." Merck & Co, Inc, West Point, PA.
  2. Goldberg MR, Bradstreet TE, McWilliams EJ, Tanaka WK, Lipert S, Bjornsson TD, Waldman SA, Osborne B, Pivadori L, Lewis G, et al "Biochemical effects of losartan, a nonpeptide angiotensin II receptor antagonist, on the renin-angiotensin-aldosterone system in hypertensive patients." Hypertension 25 (1995): 37-46
  3. Tikkanen I, Omvik P, Jensen HA "Comparison of the angiotensin II antagonist losartan with the angiotensin converting enzyme inhibitor enalapril in patients with essential hypertension." J Hypertens 13 (1995): 1343-51
View all 22 references

Ccbs (Includes Exforge HCT) ↔ Cardiogenic Shock/Hypotension

Severe Potential Hazard, High plausibility

Applies to: Cardiogenic Shock, Hypotension

In general, calcium channel blockers (CCBs) should not be used in patients with hypotension (systolic pressure < 90 mm Hg) or cardiogenic shock. Due to potential negative inotropic and peripheral vasodilating effects, the use of CCBs may further depress cardiac output and blood pressure, which can be detrimental in these patients. The use of verapamil and diltiazem is specifically contraindicated under these circumstances.

References

  1. "Product Information. Calan (verapamil)." Searle, Skokie, IL.
  2. Stehle G, Buss J, Eibach J, et al "Cardiogenic shock associated with verapamil in a patient with liver cirrhosis." Lancet 336 (1990): 1079
  3. "Product Information. Vascor (bepridil)." McNeil Pharmaceutical, Raritan, NJ.
View all 6 references

Ccbs (Includes Exforge HCT) ↔ Coronary Artery Disease

Severe Potential Hazard, Low plausibility

Applies to: Ischemic Heart Disease

Increased frequency, duration, and/or severity of angina, as well as acute myocardial infarction, have rarely developed during initiation or dosage increase of calcium channel blockers (CCBs), particularly in patients with severe obstructive coronary artery disease and those treated with immediate-release formulations. The mechanism of this effect is not established. Therapy with CCBs should be administered cautiously in patients with significant coronary artery disease.

References

  1. Myrhed M, Wiholm B-E "Nifedipine: a survey of adverse effects." Acta Pharmacol Toxicol (Copenh) 58 (1986): 133-6
  2. Thomassen AR, Bagger JP, Nielsen TT "Hemodynamic and cardiac metabolic changes during nicardipine-induced myocardial ischemia." Cathet Cardiovasc Diagn 14 (1988): 41-3
  3. Kloner RA "Nifedipine in ischemic heart disease." Circulation 92 (1995): 1074-8
View all 15 references

Ccbs (Includes Exforge HCT) ↔ Liver Disease

Severe Potential Hazard, High plausibility

Applies to: Liver Disease

Calcium channel blockers (CCBs) are extensively metabolized by the liver. The half-lives of CCBs may be prolonged substantially in patients with severe hepatic impairment, with the potential for significant drug accumulation. In addition, the use of some CCBs has been associated with elevations in serum transaminases, both with and without concomitant elevations in alkaline phosphatase and bilirubin. While these effects may be transient and reversible, several patients have developed cholestasis or hepatocellular injury that was proven by rechallenge. Therapy with CCBs should be administered cautiously and often at reduced dosages in patients with significantly impaired hepatic function. Periodic monitoring of liver function and for excessive pharmacologic effects (e.g., abnormal prolongation of PR interval) is advised, and the dosage adjusted if necessary.

References

  1. Stern EH, Pitchon R, King BD, Wiener I "Possible hepatitis from verapamil." N Engl J Med 306 (1982): 612-3
  2. Giacomini KM, Massoud N, Wong FM, Giacomini JC "Decreased binding of verapamil to plasma proteins in patients with liver disease." J Cardiovasc Pharmacol 6 (1984): 924-8
  3. "Product Information. Calan (verapamil)." Searle, Skokie, IL.
View all 53 references

Thiazides (Includes Exforge HCT) ↔ Anuria

Severe Potential Hazard, High plausibility

Applies to: Anuria

The use of thiazide diuretics is contraindicated in patients with anuria.

References

  1. "Product Information. Diuril (chlorothiazide)." Merck & Co, Inc, West Point, PA.
  2. "Product Information. Renese-R (reserpine-polythiazide)." Pfizer US Pharmaceuticals, New York, NY.
  3. "Product Information. Enduron (methyclothiazide)." Abbott Pharmaceutical, Abbott Park, IL.
View all 9 references

Thiazides (Includes Exforge HCT) ↔ Electrolyte Losses

Severe Potential Hazard, High plausibility

Applies to: Hypokalemia, Diarrhea, Electrolyte Abnormalities, Hyperaldosteronism, Hyponatremia, Magnesium Imbalance, Malnourished, Vomiting, Ventricular Arrhythmia, Dehydration

The use of thiazide diuretics is commonly associated with loss of electrolytes, most significantly potassium but also sodium, chloride, bicarbonate, and magnesium. The loss of other electrolytes such as phosphate, bromide and iodide is usually slight. Potassium and magnesium depletion may lead to cardiac arrhythmias and cardiac arrest. Other electrolyte-related complications include metabolic alkalosis and hyponatremia, which are rarely life-threatening. Therapy with thiazide diuretics should be administered cautiously in patients with or predisposed to fluid and electrolyte depletion, including patients with primary or secondary aldosteronism (may have low potassium levels); those with severe or prolonged diarrhea or vomiting; and those with poor nutritional status. Fluid and electrolyte abnormalities should be corrected prior to initiating therapy, and blood pressure as well as serum electrolyte concentrations monitored periodically and maintained at normal ranges during therapy. Patients should be advised to immediately report signs and symptoms of fluid or electrolyte imbalance, including dry mouth, thirst, weakness, lethargy, drowsiness, restlessness, muscle pains or cramps, muscular fatigue, hypotension, oliguria, tachycardia, arrhythmia, or gastrointestinal disturbances such as nausea and vomiting. Digitalized patients and patients with a history of ventricular arrhythmias should be monitored carefully, since development of hypokalemia may be particularly dangerous in these patients. The risk of hypokalemia may be minimized by slow diuresis, a lower thiazide dosage, potassium supplementation, or combined use with a potassium-sparing diuretic.

References

  1. Peters RW, Hamilton J, Hamilton BP "Incidence of cardiac arrhythmias associated with mild hypokalemia induced by low-dose diuretic therapy for hypertension." South Med J 82 (1989): 966-9,
  2. Jorgensen FS, Brunner S "The long-term effect of bendroflumethiazide on renal calcium and magnesium excretion and stone formation in patients with recurring renal stones." Scand J Urol Nephrol 8 (1974): 128-31
  3. Medical Research Council Working Party on Mild to Moderate Hypertension. "Ventricular extrasystoles during thiazide treatment: substudy of MRC mild hypertension trial." Br Med J (Clin Res Ed) 287 (1983): 1249-53
View all 77 references

Thiazides (Includes Exforge HCT) ↔ Liver Disease

Severe Potential Hazard, High plausibility

Applies to: Liver Disease

Patients with severe liver disease or cirrhosis are very susceptible to thiazide-induced hypokalemic hypochloremic alkalosis. Blood ammonia concentrations may be further increased in patients with previously elevated concentrations. Hepatic encephalopathy and death have occurred secondary to the electrolyte alterations accompanying diuretic use. Therapy with thiazide diuretics should be administered cautiously in patients with impaired hepatic function or progressive liver disease, and discontinued promptly if signs of impending hepatic coma appear (e.g., tremors, confusion, and increased jaundice).

References

  1. Sherlock S, Senewiratne B, Scott A, Walker JG "Complications of diuretic therapy in hepatic cirrhosis." Lancet 1 (1966): 1049-52
  2. "Product Information. Zaroxolyn (metolazone)." Rhone-Poulenc Rorer, Collegeville, PA.
  3. "Product Information. Metahydrin (trichlormethiazide)." Hoechst Marion-Roussel Inc, Kansas City, MO.
View all 12 references

Thiazides (Includes Exforge HCT) ↔ Lupus Erythematosus

Severe Potential Hazard, Moderate plausibility

Applies to: Lupus Erythematosus

The use of thiazide diuretics has been reported to possibly exacerbate or activate systemic lupus erythematosus. Reported cases have generally been associated with chlorothiazide and hydrochlorothiazide. Therapy with thiazide diuretics should be administered cautiously in patients with a history or risk of SLE.

References

  1. "Product Information. Zaroxolyn (metolazone)." Rhone-Poulenc Rorer, Collegeville, PA.
  2. "Product Information. Renese-R (reserpine-polythiazide)." Pfizer US Pharmaceuticals, New York, NY.
  3. "Product Information. Metahydrin (trichlormethiazide)." Hoechst Marion-Roussel Inc, Kansas City, MO.
View all 14 references

Thiazides (Includes Exforge HCT) ↔ Renal Function Disorders

Severe Potential Hazard, High plausibility

Applies to: Renal Dysfunction

Thiazide diuretics may be ineffective when the glomerular filtration rate is low (GFR < 25 mL/min) because they are not expected to be filtered into the renal tubule, their site of action. In addition, thiazide diuretics decrease the GFR and may precipitate azotemia in renal disease. Cumulative effects may also develop because most of these drugs are excreted unchanged in the urine by glomerular filtration and active tubular secretion. Therapy with thiazide diuretics should be administered cautiously at reduced dosages in patients with renal impairment. If renal function becomes progressively worse, as indicated by rising BUN or serum creatinine levels, an interruption or discontinuation of thiazide therapy should be considered.

References

  1. Klunk LJ, Ringel S, Neiss ES "The disposition of 14C-indapamide in man." J Clin Pharmacol 23 (1983): 377-84
  2. Riess W, Dubach UC, Burckhardt D, Theobald W, Vuillard P, Zimmerli M "Pharmacokinetic studies with chlorthalidone (Hygroton) in man." Eur J Clin Pharmacol 12 (1977): 375-82
  3. el-Meheiry MM, Nabih AE, Soliman MD "A clinical study of a new diuretic, Trichlormethiazide." J Trop Med Hyg 69 (1966): 209-14
View all 41 references

Ar Antagonists (Includes Exforge HCT) ↔ Chf

Moderate Potential Hazard, Moderate plausibility

Applies to: Congestive Heart Failure

Angiotensin II receptor (AR) antagonists can cause renal impairment in patients whose renal function depends on the activity of the renin-angiotensin-aldosterone system. In addition, symptomatic hypotension can occur in susceptible individuals, which may compromise renal and myocardial perfusion. In patients with severe congestive heart failure (CHF), treatment with AR antagonists has been associated with oliguria and/or progressive azotemia and, rarely, renal failure, myocardial ischemia, and death. Therapy with AR antagonists should be initiated cautiously in patients with severe CHF, especially when accompanied by volume and/or sodium depletion. In patients who experience a decline in renal function, discontinuation of AR antagonist therapy is usually not required provided there is symptomatic improvement of the heart failure and renal deterioration is well-tolerated. Transient hypotension is also not a contraindication to further treatment with AR antagonists, since therapy can usually be reinstated without difficulty after blood pressure stabilizes.

References

  1. Saine DR, Ahrens ER "Renal impairment associated with losartan." Ann Intern Med 124 (1996): 775
  2. Doig JK, MacFadyen RJ, Sweet CS, Lees KR, Reid JL "Dose-ranging study of the angiotensin type I receptor antagonist losartan (DuP753/MK954), in salt-deplete normal man." J Cardiovasc Pharmacol 21 (1993): 732-8
  3. Holwerda NJ, Fogari R, Angeli P, et al. "Valsartan, a new angiotensin II antagonist for the treatment of essential hypertension: efficacy and safety compared with placebo and enalapril." J Hypertens 14 (1996): 1147-115
View all 27 references

Ar Antagonists (Includes Exforge HCT) ↔ Renal Artery Stenosis

Moderate Potential Hazard, Moderate plausibility

Applies to: Renal Artery Atherosclerosis

In patients with bilateral renal artery stenosis or renal artery stenosis in a solitary kidney, angiotensin II receptor (AR) antagonists may reduce renal perfusion to a critically low level. Increases in serum creatinine or blood urea nitrogen have been reported with ACE inhibitors, a class of drugs that also block the renin-angiotensin-aldosterone system. Although there are no long-term data on the use of AR antagonists in patients with renal artery stenosis, a similar effect should be anticipated. Renal function should be monitored closely for the first few weeks of therapy.

References

  1. "Product Information. Benicar (olmesartan)." Sankyo Parke Davis, Parsippany, NJ.
  2. "Product Information. Cozaar (losartan)." Merck & Co, Inc, West Point, PA.
  3. "Product Information. Diovan (valsartan)." Novartis Pharmaceuticals, East Hanover, NJ.

Ccbs (Includes Exforge HCT) ↔ Chf/Ami

Moderate Potential Hazard, Moderate plausibility

Applies to: Congestive Heart Failure, Myocardial Infarction

Calcium channel blockers (CCBs) may have varying degrees of negative inotropic effect. Congestive heart failure (CHF), worsening of CHF, and pulmonary edema have occurred in some patients treated with a CCB, primarily verapamil. Some CCBs have also caused mild to moderate peripheral edema due to localized vasodilation of dependent arterioles and small blood vessels, which can be confused with the effects of increasing left ventricular dysfunction. Although some CCBs have been used in the treatment of CHF, therapy with CCBs should be administered cautiously in patients with severe left ventricular dysfunction (e.g., ejection fraction < 30%) or moderate to severe symptoms of cardiac failure and in patients with any degree of ventricular dysfunction if they are receiving a beta-adrenergic blocker. Likewise, caution is advised in patients with acute myocardial infarction and pulmonary congestion documented by X-ray on admission, since associated heart failure may be acutely worsened by administration of a CCB.

References

  1. Batlouni M, Armaganijan D, Ghorayeb N, Magliano MF "Clinical efficacy and tolerability of isradipine in the treatment of mild-to-moderate hypertension in young and elderly patients." J Cardiovasc Pharmacol 19 (1992): s53-7
  2. Sleight P "Calcium antagonists during and after myocardial infarction." Drugs 51 (1996): 216-25
  3. Brogden RN, Sorkin EM "Isradipine: an update of its pharmacodynamic and pharmacokinetic properties and therapeutic efficacy in the treatment of mild to moderate hypertension." Drugs 49 (1995): 618-49
View all 29 references

Thiazides (Includes Exforge HCT) ↔ Diabetes

Moderate Potential Hazard, Moderate plausibility

Applies to: Diabetes Mellitus, Abnormal Glucose Tolerance

Thiazide diuretics may cause hyperglycemia and glycosuria in patients with diabetes. They may also precipitate diabetes in prediabetic patients. These effects are usually reversible following discontinuation of the drugs. Therapy with thiazide diuretics should be administered cautiously in patients with diabetes mellitus, glucose intolerance, or a predisposition to hyperglycemia. Patients with diabetes mellitus should be monitored more closely during thiazide therapy, and their antidiabetic regimen adjusted accordingly.

References

  1. "Product Information. Diuril (chlorothiazide)." Merck & Co, Inc, West Point, PA.
  2. Nielsen S, Schmitz A, Knudsen RE, Dollerup J, Mogensen CE "Enalapril versus bendroflumethiazide in type 2 diabetes complicated by hypertension." Q J Med 87 (1994): 747-54
  3. Diamond MT "Hyperglycemic hyperosmolar coma associated with hydrochlorothiazide and pancreatitis." N Y State J Med 72 (1972): 1741-2
View all 36 references

Thiazides (Includes Exforge HCT) ↔ Hyperlipidemia

Moderate Potential Hazard, Moderate plausibility

Applies to: Hyperlipidemia

Thiazide diuretics may increase serum triglyceride and cholesterol levels, primarily LDL and VLDL. Whether these effects are dose-related and sustained during chronic therapy are unknown. Patients with preexisting hyperlipidemia may require closer monitoring during thiazide therapy, and adjustments made accordingly in their lipid-lowering regimen

References

  1. Ames RP "A comparison of blood lipid and blood pressure responses during the treatment of systemic hypertension with indapamide and with thiazides." Am J Cardiol 77 (1996): b12-6
  2. Freis ED "The efficacy and safety of diuretics in treating hypertension." Ann Intern Med 122 (1995): 223-6
  3. Slotkoff L "Clinical efficacy and safety of indapamide in the treatment of edema." Am Heart J 106 (1983): 233-7
View all 23 references

Thiazides (Includes Exforge HCT) ↔ Hyperparathyroidism

Moderate Potential Hazard, Moderate plausibility

Applies to: Hyperparathyroidism

Urinary calcium excretion is decreased by thiazide diuretics during chronic administration. Pathologic changes in the parathyroid gland with hypercalcemia and hypophosphatemia have been reported during prolonged therapy. However, the common complications of hyperparathyroidism such as renal lithiasis, bone resorption, and peptic ulceration have not been seen. Clinicians should be cognizant of these effects when prescribing or administering thiazide therapy to patients with hyperparathyroidism. These drugs should be discontinued before carrying out tests for parathyroid function.

References

  1. Lindy S, Tarssanen L "Serum calcium and phosphorus in patients treated with thiazides and furosemide." Acta Med Scand 194 (1973): 319-22
  2. "Product Information. Lozol (indapamide)." Rhone-Poulenc Rorer, Collegeville, PA.
  3. Paloyan E, Farland M, Pickleman JR "Hyperparathyroidism coexisting with hypertension and prolonged thiazide administration." JAMA 210 (1969): 1243-5
View all 27 references

Thiazides (Includes Exforge HCT) ↔ Hyperuricemia

Moderate Potential Hazard, High plausibility

Applies to: Gout

Thiazide diuretics decrease the rate of uric acid excretion. Hyperuricemia occurs frequently but is usually asymptomatic and rarely leads to clinical gout except in patients with a history of gout or chronic renal failure. Therapy with thiazide diuretics should be administered cautiously in such patients.

References

  1. "Product Information. Thalitone (chlorthalidone)." Monarch Pharmaceuticals Inc, Bristol, TN.
  2. "Product Information. Diuril (chlorothiazide)." Merck & Co, Inc, West Point, PA.
  3. Beling S, Vukovich RA, Neiss ES, Zisblatt M, Webb E, Losi M "Long-term experience with indapamide." Am Heart J 106 (1983): 258-62
View all 20 references

Thiazides (Includes Exforge HCT) ↔ Thyroid Function Tests

Moderate Potential Hazard, Moderate plausibility

Applies to: Thyroid Disease

Thiazide diuretics may decrease serum PBI (protein-bound iodine) levels without associated thyroid disturbance. Clinicians should be cognizant of this effect when prescribing or administering thiazide therapy to patients with thyroid disorders.

References

  1. Bech K, Skovsted L, Siersbaek-Nielsen K, Hansen JM "Influence of thiazides on thyroid parameters in man." Acta Endocrinol (Copenh) 89 (1978): 673-8
  2. "Product Information. Thalitone (chlorthalidone)." Monarch Pharmaceuticals Inc, Bristol, TN.
  3. "Product Information. Renese-R (reserpine-polythiazide)." Pfizer US Pharmaceuticals, New York, NY.
View all 10 references

Valsartan (Includes Exforge HCT) ↔ Renal/Liver Disease

Moderate Potential Hazard, Moderate plausibility

Applies to: Liver Disease, Biliary Obstruction, Renal Dysfunction

Valsartan is primarily eliminated by biliary excretion, and a minority is excreted in the urine. Dosage adjustments are not necessary in patients with renal impairment unless they are also volume-depleted, in which case therapy should be initiated under medical supervision. Likewise, patients with mild to moderate hepatic impairment or biliary obstruction generally do not require a dosage adjustment. The manufacturer recommends administering valsartan therapy with caution in patients with impaired renal and/or liver function, particularly if these conditions are severe.

References

  1. "Product Information. Diovan (valsartan)." Novartis Pharmaceuticals, East Hanover, NJ.

You should also know about...

Exforge HCT (amlodipine / hydrochlorothiazide / valsartan) drug Interactions

There are 849 drug interactions with Exforge HCT (amlodipine / hydrochlorothiazide / valsartan)

Exforge HCT (amlodipine / hydrochlorothiazide / valsartan) alcohol/food Interactions

There are 5 alcohol/food interactions with Exforge HCT (amlodipine / hydrochlorothiazide / valsartan)

Drug Interaction Classification

The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables.

Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.

Do not stop taking any medications without consulting your healthcare provider.

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