Interaction Checker

Nitroglycerin interactions

Nitroglycerin (Nitrostat, Nitro-Dur, Nitrolingual), a nitrate has 131 documented interactions across the FDA labels and fact sheets we index: 13 major, 111 moderate, 7 minor, and 0 where a label reports no significant interaction. Each entry below quotes the sentence behind it. This drug page is a starting point, not a verdict for your situation.

Interactions from the label

Major interactions (13)

  • AvanafilPDE5 inhibitorMajor

    Use of phosphodiesterase type 5 (PDE-5) Inhibitors, such as avanafil, sildenafil, tadalafil, or vardenafil, or soluble guanylate cyclase (sGC) stimulator (riociguat). (Nitroglycerin label, Contraindications)

  • Bromocriptinedopamine agonistMajor

    Therefore, patients receiving sublingual nitroglycerin should avoid ergotamine and related drugs or be monitored for symptoms of ergotism if this is not possible. (Nitroglycerin label, Drug interactions)

  • Cabergolinedopamine agonistMajor

    Therefore, patients receiving sublingual nitroglycerin should avoid ergotamine and related drugs or be monitored for symptoms of ergotism if this is not possible. (Nitroglycerin label, Drug interactions)

  • Dihydroergotamineergot alkaloidMajor

    Therefore, patients receiving sublingual nitroglycerin should avoid ergotamine and related drugs or be monitored for symptoms of ergotism if this is not possible. (Nitroglycerin label, Drug interactions)

  • Ergotamine and caffeineergot alkaloidMajor

    Therefore, patients receiving sublingual nitroglycerin should avoid ergotamine and related drugs or be monitored for symptoms of ergotism if this is not possible. (Nitroglycerin label, Drug interactions)

  • Isosorbide dinitratenitrateMajor

    Hypersensitivity to Nitroglycerin Lingual Spray or to other nitrates or nitrites or any excipient. (Nitroglycerin label, Contraindications)

  • Isosorbide dinitrate and hydralazinenitrateMajor

    Hypersensitivity to Nitroglycerin Lingual Spray or to other nitrates or nitrites or any excipient. (Nitroglycerin label, Contraindications)

  • Isosorbide mononitratenitrateMajor

    Hypersensitivity to Nitroglycerin Lingual Spray or to other nitrates or nitrites or any excipient. (Nitroglycerin label, Contraindications)

  • Methylergonovineergot alkaloidMajor

    Therefore, patients receiving sublingual nitroglycerin should avoid ergotamine and related drugs or be monitored for symptoms of ergotism if this is not possible. (Nitroglycerin label, Drug interactions)

  • RiociguatvasodilatorMajor

    Use of phosphodiesterase type 5 (PDE-5) Inhibitors, such as avanafil, sildenafil, tadalafil, or vardenafil, or soluble guanylate cyclase (sGC) stimulator (riociguat). (Nitroglycerin label, Contraindications)

  • SildenafilPDE5 inhibitorMajor

    Use of phosphodiesterase type 5 (PDE-5) Inhibitors, such as avanafil, sildenafil, tadalafil, or vardenafil, or soluble guanylate cyclase (sGC) stimulator (riociguat). (Nitroglycerin label, Contraindications)

  • TadalafilPDE5 inhibitorMajor

    Use of phosphodiesterase type 5 (PDE-5) Inhibitors, such as avanafil, sildenafil, tadalafil, or vardenafil, or soluble guanylate cyclase (sGC) stimulator (riociguat). (Nitroglycerin label, Contraindications)

  • VardenafilPDE5 inhibitorMajor

    Use of phosphodiesterase type 5 (PDE-5) Inhibitors, such as avanafil, sildenafil, tadalafil, or vardenafil, or soluble guanylate cyclase (sGC) stimulator (riociguat). (Nitroglycerin label, Contraindications)

Moderate interactions (111)

  • Acebutololbeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • AdenosineantiarrhythmicModerate

    Hypotension Adenosine injection is a potent peripheral vasodilator and can induce significant hypotension. (Adenosine label, Warnings and precautions)

  • Alfuzosinalpha blockerModerate

    Postural hypotension/syncope: Care should be taken in patients with symptomatic hypotension or who have had a hypotensive response to other medications or are concomitantly treated with antihypertensive medication or nitrates ( 5.1 ) (Alfuzosin label, Warnings and precautions)

  • AliskirenantihypertensiveModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Amiloridepotassium-sparing diureticModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Amlodipinedihydropyridine calcium channel blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Amlodipine and atorvastatindihydropyridine calcium channel blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Amlodipine and benazeprildihydropyridine calcium channel blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Amlodipine and olmesartandihydropyridine calcium channel blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Amlodipine and valsartandihydropyridine calcium channel blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Articaine and epinephrinelocal anestheticModerate

    Examples of Drugs Associated with Methemoglobinemia: Class Examples Nitrates/Nitrites nitric oxide, nitroglycerin, nitroprusside, nitrous oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic agents cyclophosphamide, flutamide, hydroxyurea, ifosfamide, rasburicase Antibiotics… (Articaine and epinephrine label, Drug interactions)

  • Atenololbeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Atenolol and chlorthalidonebeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Azilsartanangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • BenazeprilACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Benazepril and hydrochlorothiazideACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Betaxololbeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Bisoprololbeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Bisoprolol and hydrochlorothiazidebeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Brimonidine and timololalpha-adrenergic agonistModerate

    Antihypertensives Patients receiving antihypertensive drugs, beta-adrenergic blockers, and nitrates should be observed for possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Bupivacainelocal anestheticModerate

    • Drugs Associated with Methemoglobinemia : Patients are at increased risk of developing methemoglobinemia when concurrently exposed to nitrates, nitrites, local anesthetics, antineoplastic agents, antibiotics, antimalarials, anticonvulsants, and other drugs. (Bupivacaine label, Drug interactions)

  • Bupivacaine and epinephrinelocal anestheticModerate

    Examples of Drugs Associated with Methemoglobinemia: Class Examples Nitrates/Nitrites nitric oxide, nitroglycerin, nitroprusside, nitrous oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic agents cyclophosphamide, flutamide, hydroxyurea, ifosfamide, rasburicase Antibiotics… (Bupivacaine and epinephrine label, Drug interactions)

  • Candesartanangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Candesartan and hydrochlorothiazideangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • CaptoprilACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Carvedilolbeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Chloroprocainelocal anestheticModerate

    …concurrently exposed to the following drugs, which could include other local anesthetics: Examples of Drugs Associated with Methemoglobinemia: Class Examples Nitrates/Nitrites nitric oxide, nitroglycerin, nitroprusside, nitrous oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic… (Chloroprocaine label, Precautions)

  • Chlorothiazidethiazide diureticModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Chlorthalidonethiazide diureticModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Clonidinealpha-adrenergic agonistModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Dexmedetomidinealpha-adrenergic agonistModerate

    • Co-administration with Other Vasodilators or Negative Chronotropic Agents : Use with caution due to additive pharmacodynamic effects. (Dexmedetomidine label, Warnings and precautions)

  • DicyclomineanticholinergicModerate

    …drugs including dicyclomine hydrochloride: amantadine, antiarrhythmic agents of Class I (e.g., quinidine), antihistamines, antipsychotic agents (e.g., phenothiazines), benzodiazepines, MAO inhibitors, narcotic analgesics (e.g., meperidine), nitrates and nitrites, sympathomimetic agents, tricyclic antidepressants, and other drugs having anticholinergic activity. (Dicyclomine label, Drug interactions)

  • Diltiazemcalcium channel blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • DofetilideantiarrhythmicModerate

    …oral anticoagulants, calcium channel blockers, beta blockers, cardiac glycosides, inducers of CYP3A4, substrates and inhibitors of CYP3A4, substrates and inhibitors of P-glycoprotein, nitrates, sulphonylureas, loop diuretics, potassium sparing diuretics, thiazide diuretics, substrates and inhibitors of tubular organic cation transport, and QTc-prolonging drugs. (Dofetilide label, Drug interactions)

  • Dorzolamide and timololcarbonic anhydrase inhibitorModerate

    Antihypertensives Patients receiving antihypertensive drugs, beta-adrenergic blockers, and nitrates should be observed for possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Doxazosinalpha blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Econazoleazole antifungalModerate

    Most cases reported product application with use under occlusion, genital application, or application to a large body surface area which may increase the systemic absorption of econazole nitrate. (Econazole label, Drug interactions)

  • EnalaprilACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Enalapril and hydrochlorothiazideACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • EnalaprilatACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Eplerenonealdosterone antagonistModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Epoprostenolprostaglandin analogModerate

    Additional reductions in blood pressure may occur when VELETRI is administered with diuretics, antihypertensive agents, or other vasodilators. (Epoprostenol label, Drug interactions)

  • Esmololbeta blockerModerate

    Antihypertensives Patients receiving antihypertensive drugs, beta-adrenergic blockers, and nitrates should be observed for possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Ethacrynic acidloop diureticModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Etonogestrel and ethinyl estradiolestrogenModerate

    Co-administration of vaginal miconazole nitrate and Etonogestrel/Ethinyl Estradiol Vaginal Ring increases the serum concentrations of etonogestrel and ethinyl estradiol by up to 40% [see Clinical Pharmacology (12.3) ] . (Etonogestrel and ethinyl estradiol label, Drug interactions)

  • Felodipinedihydropyridine calcium channel blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • FosinoprilACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Fosinopril and hydrochlorothiazideACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Furosemideloop diureticModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Guanfacinealpha-adrenergic agonistModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • HeparinanticoagulantModerate

    Intravenous nitroglycerin administered to heparinized patients may result in a decrease of the partial thromboplastin time with subsequent rebound effect upon discontinuation of nitroglycerin. (Heparin label, Drug interactions)

  • HydralazinevasodilatorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Hydrochlorothiazidethiazide diureticModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Indapamidethiazide diureticModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Irbesartanangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Irbesartan and hydrochlorothiazideangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Isradipinedihydropyridine calcium channel blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Labetalolbeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Lidocaine and epinephrinelocal anestheticModerate

    Examples of Drugs Associated with Methemoglobinemia: Class Examples Nitrates/Nitrites nitric oxide, nitroglycerin, nitroprusside, nitrous oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic agents cyclophosphamide, flutamide, hydroxyurea, isofamide, rasburicase Antibiotics… (Lidocaine and epinephrine label, Drug interactions)

  • Lidocaine and prilocainelocal anestheticModerate

    …concurrently exposed to the following drugs, which could include other local anesthetics: Examples of Drugs Associated with Methemoglobinemia: Class Examples Nitrates/Nitrites nitric oxide, nitroglycerin, nitroprusside, nitrous oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic… (Lidocaine and prilocaine label, Drug interactions)

  • LisinoprilACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Lisinopril and hydrochlorothiazideACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Lofexidinealpha-adrenergic agonistModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Losartanangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Losartan and hydrochlorothiazideangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • MecamylamineantihypertensiveModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Mepivacainelocal anestheticModerate

    …when concurrently exposed to the following drugs, which could include other local anesthetics: Examples of Drugs Associated with Methemoglobinemia: Class Examples Nitrates/Nitrites nitroglycerin, nitroprusside, nitric oxide, nitrous oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine… (Mepivacaine label, Drug interactions)

  • MethyldopaantihypertensiveModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Metolazonethiazide diureticModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Metoprololbeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Metoprolol and hydrochlorothiazidebeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • MinoxidilvasodilatorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • MoexiprilACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Nadololbeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Nebivololbeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • NiacinModerate

    Caution should also be used when niacin extended-release tablets are used in patients with unstable angina or in the acute phase of an MI, particularly when such patients are also receiving vasoactive drugs such as nitrates, calcium channel blockers, or adrenergic blocking agents. (Niacin label, Warnings and precautions)

  • Nicardipinedihydropyridine calcium channel blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Nifedipinedihydropyridine calcium channel blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Nimodipinedihydropyridine calcium channel blockerModerate

    Marked orthostatic hypotension has been reported when calcium channel blockers and organic nitrates were used concomitantly. (Nitroglycerin label, Drug interactions)

  • Nisoldipinedihydropyridine calcium channel blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • NitroprussidevasodilatorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Olmesartanangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Olmesartan and hydrochlorothiazideangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Olmesartan, amlodipine, and hydrochlorothiazideangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • PerindoprilACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Phenoxybenzaminealpha blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Pindololbeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Prazosinalpha blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Prilocaine and epinephrinelocal anestheticModerate

    …concurrently exposed to the following drugs, which could include other local anesthetics: EXAMPLES OF DRUGS ASSOCIATED WITH METHEMOGLOBINEMIA: Class Examples Nitrates/Nitrites nitric oxide, nitroglycerin, nitroprusside, nitrous oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic… (Prilocaine and epinephrine label, Drug interactions)

  • Propranololbeta blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • QuinaprilACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Quinapril and hydrochlorothiazideACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • RamiprilACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Ropivacainelocal anestheticModerate

    …which could include other local anesthetics [see Warnings and Precautions ( 5.4 )] : Examples of Drugs Associated with Methemoglobinemia Class Examples Nitrates/Nitrites nitric oxide, nitroglycerin, nitroprusside, nitrous oxide Local anesthetics articaine, benzocaine, bupivacaine, lidocaine, mepivacaine, prilocaine, procaine, ropivacaine, tetracaine Antineoplastic… (Ropivacaine label, Drug interactions)

  • Sacubitril and valsartanangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Sotalolbeta blockerModerate

    Antihypertensives Patients receiving antihypertensive drugs, beta-adrenergic blockers, and nitrates should be observed for possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Spironolactonealdosterone antagonistModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Spironolactone and hydrochlorothiazidealdosterone antagonistModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Telmisartanangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Telmisartan and amlodipineangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Telmisartan and hydrochlorothiazideangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Terazosinalpha blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Timololbeta blockerModerate

    Antihypertensives Patients receiving antihypertensive drugs, beta-adrenergic blockers, and nitrates should be observed for possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Tizanidinemuscle relaxantModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Torsemideloop diureticModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • TrandolaprilACE inhibitorModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Triamterenepotassium-sparing diureticModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Triamterene and hydrochlorothiazidepotassium-sparing diureticModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Valsartanangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Valsartan and hydrochlorothiazideangiotensin II receptor blocker (ARB)Moderate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

  • Verapamilcalcium channel blockerModerate

    Antihypertensives: Possible additive hypotensive effects. (Nitroglycerin label, Drug interactions)

Minor mentions (7)

  • Dutasteride and tamsulosin5-alpha reductase inhibitorMinor

    Alpha-adrenergic antagonists and PDE-5 inhibitors are both vasodilators that can lower blood pressure. (Dutasteride and tamsulosin label, Warnings and precautions)

  • EpinephrinesympathomimeticMinor

    Drugs antagonizing pressor effects of epinephrine α-blockers, such as phentolamine Vasodilators, such as nitrates Diuretics Antihypertensives Ergot alkaloids Drugs potentiating pressor effects of epinephrine • Sympathomimetics • β-blockers, such as propranolol • Tricyclic anti-depressants • Monoamine oxidase (MAO) inhibitors • Catechol-O-methyl transferase (COMT)… (Epinephrine label, Drug interactions)

  • Finasteride5-alpha reductase inhibitorMinor

    …acetylsalicylic acid, α-blockers, angiotensin-converting enzyme (ACE) inhibitors, analgesics, anti-convulsants, beta-adrenergic blocking agents, diuretics, calcium channel blockers, cardiac nitrates, HMG-CoA reductase inhibitors, nonsteroidal anti-inflammatory drugs (NSAIDs), benzodiazepines, H 2 antagonists and quinolone anti-infectives without evidence of clinically… (Finasteride label, Drug interactions)

  • MethohexitalbarbiturateMinor

    Post injury arterial injection of vasodilators and/or arterial infusion of parenteral fluids are generally regarded to be of no value in altering outcome. (Methohexital label, Warnings)

  • MilrinonePDE3 inhibitorMinor

    …been observed in limited experience with patients in whom milrinone was used concurrently with the following drugs: digitalis glycosides; lidocaine, quinidine; hydralazine, prazosin; isosorbide dinitrate, nitroglycerin; chlorthalidone, furosemide, hydrochlorothiazide, spironolactone; captopril; heparin, warfarin, diazepam, insulin; and potassium supplements. (Milrinone label, Drug interactions)

  • Silodosinalpha blockerMinor

    Alpha-adrenergic blockers and PDE5 inhibitors are both vasodilators that can lower blood pressure. (Silodosin label, Warnings and precautions)

  • Tamsulosinalpha blockerMinor

    Alpha-adrenergic blockers and PDE5 inhibitors are both vasodilators that can lower blood pressure. (Tamsulosin label, Warnings and precautions)

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Not medical advice. Severity reflects the label's wording, not your circumstances. A "major" flag can be routine under supervision and a "minor" one can matter at high doses. Ask a pharmacist.