Isosorbide Mononitrate 30 mg Tablet, Extended Release — NDC 0904-6449-61 (Billing 00904-6449-61)
This is a package of Isosorbide Mononitrate 30 mg Tablet, Extended Release from Major Pharmaceuticals, marketed since Jan 2015 and currently FDA-listed; retail pharmacies pay about $0.0688 per unit (NADAC). It is this product's only package size.
Identity & classification
Regulatory identifiers FDA, NLM and CMS codes for this package
Drug-database identifiers Medi-Span GPI and First Databank GCN / HICL / AHFS classification
- GSN (GCN sequence number): 024488
- GCN: 48104
- GPI-14 (Medi-Span): 32100025007520
- HICL (First Databank): 006341
- AHFS class code: 24:08.08.00
- RxCUI (RxNorm): 317110
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
- RxNorm (NLM RxNav) · catalog refreshed Oct 1, 2026
- Medi-Span GPI (licensed)
- First Databank (licensed) · refreshed Oct 1, 2026
RxNorm drug class
This medicine belongs to the Nitrate Vasodilator class.
Where does this data come from?
- RxClass (NLM) · catalog refreshed Oct 1, 2026
Clinical
Isosorbide immediate-release tablets are used for the management of angina (chest pain) in people who have coronary artery disease (narrowing of the blood vessels that supply blood to the heart). Isosorbide extended-release (long-acting) tablets and extended-release capsules are used for the management of chest pain in people who have coronary artery disease. Isosorbide can only be used to prevent angina; it cannot be used to treat an episode of angina once it has begun. Isosorbide is in a class of medications called vasodilators. It works by relaxing the blood vessels so the heart does not ne...
Read the full MedlinePlus article ↗- It helps prevent angina, which is chest pain from coronary artery disease. One mononitrate tablet is also labeled for treating angina. None of these oral forms works fast enough to...
- It depends on the product. Extended-release mononitrate is taken once each morning and swallowed whole, not chewed or crushed. Other tablets are taken two or three times a day with...
- Headache is the most common side effect. It often fades with continued treatment. Tell your prescriber if it is severe or doesn't improve.
- No. Sildenafil, tadalafil and vardenafil must never be combined with isosorbide. The mix can drop your blood pressure dangerously low. Riociguat is also off-limits with it.
Patient education
Supplement & herbal interactions
Some supplements/herbs that may interact with Isosorbide Mononitrate — tap one for details:
Where does this data come from?
- MedlinePlus (NLM) · refreshed Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
Ask a licensed pharmacist directly — free, answered by our team.
Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per ea | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | $0.069 | $6.88 / 100 tablet |
| Medicaid paysCMS SDUD · 12 mo | $0.3461 | $34.61 / 100 tablet |
| Medicare drug plans payPart D · Q2 2026 | $0.1819 | $18.19 / 100 tablet |
Where does this data come from?
- CMS NADAC weekly file · file of Sep 30, 2026
- CMS ASP pricing files · refreshed Sep 20, 2026
- CMS Medicaid State Drug Utilization Data · through Q1 2026
- CMS Part D plan pricing files · refreshed Sep 24, 2026
- VA National Acquisition Center price file
Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Marketing end | Status |
|---|---|---|---|---|
| 00904-6449-61 You're viewing this Main listing | 100 BLISTER PACK in 1 CARTON / 1 TABLET, EXTENDED RELEASE in 1 BLISTER PACK | 2015-01-05 | — | Active |
Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Isosorbide Mononitrate 30 mgthis 00904-6449-61 | Major | 1 tablet | $0.069 | AB | Availability likely | — |
| Isosorbide Mononitrate 30 mg 13668-0104-01 | Torrent | 100 tablets | $0.069 | AB | Availability likely | — |
| Isosorbide Mononitrate 30 mg 42799-0958-01 | Edenbridge | 100 tablets | $0.069 | AB | Availability likely | — |
| Isosorbide Mononitrate 30 mg 50742-0175-01 | Ingenus | 100 tablets | $0.069 | AB | Availability likely | — |
| Isosorbide Mononitrate 30 mg 59651-0539-01 | Aurobindo | 100 tablets | $0.069 | AB | Availability likely | — |
| Isosorbide Mononitrate 30 mg 60687-0783-01 | American | 1 tablet | $0.069 | AB | Availability likely | — |
| Isosorbide Mononitrate 30 mg 62135-0586-90 | Chartwell | 90 tablets | $0.069 | AB | Availability likely | — |
| Isosorbide Mononitrate 30 mg 00615-7767-05 | NCS | 15 tablets | — | AB | Discontinued | — |
| Isosorbide Mononitrate 30 mg 42677-0305-01 | Shandong | 60 tablets | — | AB | FDA listed | — |
| Isosorbide Mononitrate 30 mg 50090-5686-00 | A-S | 30 tablets | — | AB | FDA listed | — |
| Isosorbide Mononitrate 30 mg 50090-6798-00 | A-S | 30 tablets | — | AB | FDA listed | — |
| Isosorbide Mononitrate 30 mg 50090-7038-00 | A-S | 90 tablets | — | AB | FDA listed | — |
| Isosorbide Mononitrate 30 mg 50090-7496-00 | A-S | 90 tablets | — | AB | FDA listed | — |
| Isosorbide Mononitrate 30 mg 51407-0208-01 | Golden | 100 tablets | — | AB | FDA listed | — |
| Isosorbide Mononitrate 30 mg 51655-0922-52 | Northwind | 30 tablets | — | AB | FDA listed | — |
| Isosorbide Mononitrate 30 mg 55154-7291-00 | Cardinal | 1 tablet | — | AB | FDA listed | — |
| Isosorbide Mononitrate 30 mg 67046-1446-03 | Coupler | 30 tablets | — | AB | FDA listed | — |
| Isosorbide Mononitrate 30 mg 68071-4290-03 | NuCare | 30 tablets | — | AB | FDA listed | — |
| Isosorbide Mononitrate 30 mg 70518-2956-00 | REMEDYREPACK | 30 tablets | — | AB | Discontinued | — |
| Isosorbide Mononitrate 30 mg 71335-2194-01 | Bryant | 30 tablets | — | AB | FDA listed | — |
| Isosorbide Mononitrate 30 mg 71610-0788-30 | Aphena | 30 tablets | — | AB | FDA listed | — |
| Isosorbide Mononitrate 30 mg 71610-0825-60 | Aphena | 90 tablets | — | AB | FDA listed | — |
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA Orange Book · refreshed Sep 3, 2026
- CMS NADAC weekly file · file of Sep 30, 2026
Availability & generic status
This product is an FDA-approved generic. Other versions of the same drug are listed under Therapeutic equivalents, least expensive first.
Where does this data come from?
- FDA Orange Book · refreshed Sep 3, 2026
Inactive Ingredients / Excipients
Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.
Where does this data come from?
IACT rows and label-wide narrative are kept separate; availability and product-level specificity depend on the submitted label.- FDA label on DailyMed · label index refreshed Oct 1, 2026
- FDA openFDA NDC Directory · synced Oct 1, 2026
Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
Why might an inactive ingredient be missing?
Can inactive ingredients matter?
Manufacturer & labeler
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- Drugs@FDA
Full prescribing information FDA SPL
🎯 Indications and Usage ▾
INDICATIONS AND USAGE Isosorbide mononitrate extended-release tablets, USP are indicated for the prevention of angina pectoris due to coronary artery disease. The onset of action of oral isosorbide mononitrate is not sufficiently rapid for this product to be useful in aborting an acute anginal episode.
⏱️ Dosage and Administration ▾
DOSAGE AND ADMINISTRATION The recommended starting dose of isosorbide mononitrate extended-release tablets is 30 mg (given as a single 30 mg tablet or as 1/2 of a 60 mg tablet) or 60 mg (given as a single tablet) once daily. After several days, the dosage may be increased to 120 mg (given as a single 120 mg tablet or as two 60 mg tablets) once daily. Rarely, 240 mg may be required.
The daily dose of isosorbide mononitrate extended-release tablets should be taken in the morning on arising. Isosorbide mononitrate extended-release tablets should not be chewed or crushed and should be swallowed together with a half-glassful of fluid.
⛔ Contraindications ▾
CONTRAINDICATIONS Isosorbide mononitrate extended-release tablets are contraindicated in patients who have shown hypersensitivity or idiosyncratic reactions to other nitrates or nitrites.
⚠️ Warnings ▾
WARNINGS Amplification of the vasodilatory effects of isosorbide mononitrate by sildenafil can result in severe hypotension. The time course and dose dependence of this interaction have not been studied. Appropriate supportive care has not been studied, but it seems reasonable to treat this as a nitrate overdose, with elevation of the extremities and with central volume expansion.
The benefits of ISMN in patients with acute myocardial infarction or congestive heart failure have not been established; because the effects of isosorbide mononitrate are difficult to terminate rapidly, this drug is not recommended in these settings. If isosorbide mononitrate is used in these conditions, careful clinical or hemodynamic monitoring must be used to avoid the hazards of hypotension and tachycardia.
🤒 Adverse Reactions ▾
ADVERSE REACTIONS The table below shows the frequencies of the adverse events that occurred in >5% of the subjects in three placebo-controlled North American studies, in which patients in the active treatment arm received 30 mg, 60 mg, 120 mg, or 240 mg of isosorbide mononitrate extended-release tablets once daily. In parentheses, the same table shows the frequencies with which these adverse events were associated with the discontinuation of treatment. Overall, 8% of the patients who received 30 mg, 60 mg, 120 mg, or 240 mg of isosorbide mononitrate in the three placebo-controlled North American studies discontinued treatment because of adverse events.
Most of these discontinued because of headache. Dizziness was rarely associated with withdrawal from these studies. Since headache appears to be a dose-related adverse effect and tends to disappear with continued treatment, it is recommended that ISMN treatment be initiated at low doses for several days before being increased to desired levels.
FREQUENCY AND ADVERSE EVENTS (DISCONTINUED) * * Some individuals discontinued for multiple reasons. ** Patients were started on 60 mg and titrated to their final dose. Three Controlled North American Studies Dose Placebo 30mg 60mg 120mg ** 240mg ** Patients 96 60 102 65 65 Headache 15%(0%) 38%(5%) 51%(8%) 42%(5%) 57%(8%) Dizziness 4%(0%) 8%(0%) 11%(1%) 9%(2%) 9%(2%) In addition, the three North American trials were pooled with 11 controlled trials conducted in Europe. Among the 14 controlled trials, a total of 711 patients were randomized to isosorbide mononitrate extended-release tablets.
When the pooled data were reviewed, headache and dizziness were the only adverse events that were reported by >5% of patients. Other adverse events, each reported by ≤5% of exposed patients, and in many cases of uncertain relation to drug treatment, were: Autonomic Nervous System Disorders: Dry mouth, hot flushes. Body as a Whole: Asthenia, back pain, chest pain, edema, fatigue, fever, flu-like symptoms, malaise, rigors.
Cardiovascular Disorders, General: Cardiac failure, hypertension, hypotension. Central and Peripheral Nervous System Disorders: Dizziness, headache, hypoesthesia, migraine, neuritis, paresis, paresthesia, ptosis, tremor, vertigo. Gastrointestinal System Disorders: Abdominal pain, constipation, diarrhea, dyspepsia, flatulence, gastric ulcer, gastritis, glossitis, hemorrhagic gastric ulcer, hemorrhoids, loose stools, melena, nausea, vomiting.
Hearing and Vestibular Disorders: Earache, tinnitus, tympanic membrane perforation. Heart Rate and Rhythm Disorders: Arrhythmia, arrhythmia atrial, atrial fibrillation, bradycardia, bundle branch block, extrasystole, palpitation, tachycardia, ventricular tachycardia. Liver and Biliary System Disorders: SGOT increase, SGPT increase.
Metabolic and Nutritional Disorders: Hyperuricemia, hypokalemia. Musculoskeletal System Disorders: Arthralgia, frozen shoulder, muscle weakness, musculoskeletal pain, myalgia, myositis, tendon disorder, torticollis. Myo-, Endo-, Pericardial and Valve Disorders: Angina pectoris aggravated, heart murmur, heart sound abnormal, myocardial infarction, Q wave abnormality.
Platelet, Bleeding and Clotting Disorders: Purpura, thrombocytopenia. Psychiatric Disorders: Anxiety, concentration impaired, confusion, decreased libido, depression, impotence, insomnia, nervousness, paroniria, somnolence. Red Blood Cell Disorder: Hypochromic anemia.
Reproductive Disorders, Female: Atrophic vaginitis, breast pain. Resistance Mechanism Disorders: Bacterial infection, moniliasis, viral infection. Respiratory System Disorders: Bronchitis, bronchospasm, coughing, dyspnea, increased sputum, nasal congestion, pharyngitis, pneumonia, pulmonary infiltration, rales, rhinitis, sinusitis.
Skin and Appendages Disorders: Acne, hair texture abnormal, increased sweating, pruritus, rash, skin nodule. Urinary System Disorders: Polyuria, renal calculus, urinary tract infection. Vascular (Extracardiac) Disorders… [Excerpted — this section continues on DailyMed.]
🆘 Overdosage ▾
OVERDOSAGE Hemodynamic Effects The ill effects of isosorbide mononitrate overdose are generally the result of isosorbide mononitrate’s capacity to induce vasodilatation, venous pooling, reduced cardiac output, and hypotension. These hemodynamic changes may have protean manifestations, including increased intracranial pressure, with any or all of persistent throbbing headache, confusion, and moderate fever; vertigo, palpitations; visual disturbances; nausea and vomiting (possibly with colic and even bloody diarrhea); syncope (especially in the upright posture); air hunger and dyspnea, later followed by reduced ventilatory effort; diaphoresis, with the skin either flushed or cold and clammy; heart block and bradycardia; paralysis; coma; seizures and death.
Laboratory determinations of serum levels of isosorbide mononitrate and its metabolites are not widely available, and such determinations have, in any event, no established role in the management of isosorbide mononitrate overdose. There are no data suggesting what dose of isosorbide mononitrate is likely to be life threatening in humans. In rats and mice, there is significant lethality at doses of 2000 mg/kg and 3000 mg/kg, respectively.
No data are available to suggest physiological maneuvers (e.g., maneuvers to change the pH of the urine) that might accelerate elimination of isosorbide mononitrate. In particular, dialysis is known to be ineffective in removing isosorbide mononitrate from the body. No specific antagonist to the vasodilator effects of isosorbide mononitrate is known, and no intervention has been subject to controlled study as a therapy of isosorbide mononitrate overdose.
Because the hypotension associated with isosorbide mononitrate overdose is the result of venodilatation and arterial hypovolemia, prudent therapy in this situation should be directed toward an increase in central fluid volume. Passive elevation of the patient’s legs may be sufficient, but intravenous infusion of normal saline or similar fluid may also be necessary. The use of epinephrine or other arterial vasoconstrictors in this setting is likely to do more harm than good.
In patients with renal disease or congestive heart failure, therapy resulting in central volume expansion is not without hazard. Treatment of isosorbide mononitrate overdose in these patients may be subtle and difficult, and invasive monitoring may be required. Methemoglobinemia Methemoglobinemia has been reported in patients receiving other organic nitrates, and it probably could also occur as a side effect of isosorbide mononitrate.
Certainly nitrate ions liberated during metabolism of isosorbide mononitrate can oxidize hemoglobin into methemoglobin. Even in patients totally without cytochrome b 5 reductase activity, however, and even assuming that the nitrate moiety of isosorbide mononitrate is quantitatively applied to oxidation of hemoglobin, about 2 mg/kg of isosorbide mononitrate should be required before any of these patients manifest clinically significant (≥10%) methemoglobinemia. In patients with normal reductase function, significant production of methemoglobin should require even larger doses of isosorbide mononitrate.
In one study in which 36 patients received 2-4 weeks of continuous nitroglycerin therapy at 3.1 to 4.4 mg/hr (equivalent, in total administered dose of nitrate ions, to 7.8 to 11.1 mg of isosorbide mononitrate per hour), the average methemoglobin level measured was 0.2%; this was comparable to that observed in parallel patients who received placebo. Notwithstanding these observations, there are case reports of significant methemoglobinemia in association with moderate overdoses of organic nitrates. None of the affected patients had been thought to be unusually susceptible.
Methemoglobin levels are available from most clinical laboratories. The diagnosis should be suspected in patients who exhibit signs of impaired oxygen delivery despite adequate cardiac output and adequate arterial pO 2 . Class… [Excerpted — this section continues on DailyMed.]
🧬 Clinical Pharmacology ▾
CLINICAL PHARMACOLOGY Mechanism of Action The isosorbide mononitrate extended-release tablet is an oral extended-release formulation of ISMN, the major active metabolite of isosorbide dinitrate; most of the clinical activity of the dinitrate is attributable to the mononitrate. The principal pharmacological action of ISMN and all organic nitrates in general is relaxation of vascular smooth muscle, producing dilatation of peripheral arteries and veins, especially the latter. Dilatation of the veins promotes peripheral pooling of blood, decreases venous return to the heart, thereby reducing left ventricular end-diastolic pressure and pulmonary capillary wedge pressure (preload).
Arteriolar relaxation reduces systemic vascular resistance, systolic arterial pressure and mean arterial pressure (afterload). Dilatation of the coronary arteries also occurs. The relative importance of preload reduction, afterload reduction, and coronary dilatation remains undefined.
Pharmacodynamics Dosing regimens for most chronically used drugs are designed to provide plasma concentrations that are continuously greater than a minimally effective concentration. This strategy is inappropriate for organic nitrates. Several well-controlled clinical trials have used exercise testing to assess the antianginal efficacy of continuously delivered nitrates.
In the large majority of these trials, active agents were indistinguishable from placebo after 24 hours (or less) of continuous therapy. Attempts to overcome tolerance by dose escalation, even to doses far in excess of those used acutely, have consistently failed. Only after nitrates have been absent from the body for several hours has their antianginal efficacy been restored.
Isosorbide mononitrate extended-release tablets, during long-term use over 42 days dosed at 120 mg once daily, continued to improve exercise performance at 4 hours and at 12 hours after dosing but its effects (although better than placebo) are less than or at best equal to the effects of the first dose of 60 mg. Pharmacokinetics and Metabolism After oral administration of ISMN as a solution or immediate-release tablets, maximum plasma concentrations of ISMN are achieved in 30 to 60 minutes, with an absolute bioavailability of approximately 100%.
After intravenous administration, ISMN is distributed into total body water in about 9 minutes with a volume of distribution of approximately 0.6-0.7 L/kg. Isosorbide mononitrate is approximately 5% bound to human plasma proteins and is distributed into blood cells and saliva. Isosorbide mononitrate is primarily metabolized by the liver, but unlike oral isosorbide dinitrate, it is not subject to first-pass metabolism.
Isosorbide mononitrate is cleared by denitration to isosorbide and glucuronidation as the mononitrate, with 96% of the administered dose excreted in the urine within 5 days and only about 1% eliminated in the feces. At least six different compounds have been detected in urine, with about 2% of the dose excreted as the unchanged drug and at least five metabolites. The metabolites are not pharmacologically active.
Renal clearance accounts for only about 4% of total body clearance. The mean plasma elimination half-life of ISMN is approximately 5 hours. The disposition of ISMN in patients with various degrees of renal insufficiency, liver cirrhosis, or cardiac dysfunction was evaluated and found to be similar to that observed in healthy subjects.
The elimination half-life of ISMN was not prolonged, and there was no drug accumulation in patients with chronic renal failure after multiple oral dosing. The pharmacokinetics and/or bioavailability of isosorbide mononitrate extended-release tablets have been studied in both normal volunteers and patients following single- and multiple-dose administration. Data from these studies suggest that the pharmacokinetics of ISMN administered as isosorbide mononitrate extended-release tablets are similar between normal healthy volunteers and patients… [Excerpted — this section continues on DailyMed.]
📦 How Supplied / Storage and Handling ▾
HOW SUPPLIED Isosorbide mononitrate extended-release tablets, USP 30 mg are white to off-white, oval shaped, film coated tablets having breakline on one side and debossed ‘3-0’ across breakline and ‘1104’ on other side. They are supplied as follows: Cartons of 100 film-coated extended-release tablets (10 film-coated extended-release tablets each blister pack x 10), NDC 0904-6449-61 Isosorbide mononitrate extended-release tablets, USP 60 mg are white to off-white, oval shaped, film coated tablets having breakline on one side and ‘60-60’ debossing across breakline and ‘1105’ on the other side.
Cartons of 100 film-coated extended-release tablets (10 film-coated extended-release tablets each blister pack x 10), NDC 0904-6450-61 WARNING: These Unit Dose packages are not child resistant and are Intended for Institutional Use Only. Keep this and all drugs out of the reach of children. Store at 20°-25°C (68°-77°F), excursions permitted to 15°-30°C (59°-86°F) [see USP Controlled Room Temperature] Manufactured by: Torrent Pharmaceuticals LTD., India.
Manufactured for: Torrent Pharma INC., Basking Ridge, NJ 07920. Packaged and Distributed by: MAJOR® PHARMACEUTICALS Indianapolis, IN 46268 USA Refer to package label for Distributor's NDC Number 8109641 Revised: April 2026 logo
📋 Description ▾
DESCRIPTION Isosorbide mononitrate (ISMN), an organic nitrate and the major biologically active metabolite of isosorbide dinitrate (ISDN), is a vasodilator with effects on both arteries and veins. Each tablet, for oral administration, contains either 30 mg, 60 mg or 120 mg of isosorbide mononitrate in an extended-release formulation. In addition, each tablet contains the following inactive ingredients: colloidal silicon dioxide, diethyl phthalate, hydrogenated castor oil, hydroxypropyl cellulose, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, talc and titanium dioxide.
The molecular formula of ISMN is C 6 H 9 NO 6 and the molecular weight is 191.14. The chemical name for ISMN is 1,4:3,6-dianhydro-,D-glucitol 5-nitrate; the compound has the following structural formula: ISMN is a white, crystalline, odorless compound which is stable in air and in solution, has a melting point of about 90°C, and an optical rotation of +144° (2% in water, 20°C). Isosorbide mononitrate is freely soluble in water, ethanol, methanol, chloroform, ethyl acetate, and dichloromethane.
For 30 mg: Meets USP Dissolution Test 6. For 60 mg and 120 mg: Meets USP Dissolution Test 1. chemical-structure
⚠️ Precautions ▾
PRECAUTIONS General Severe hypotension, particularly with upright posture, may occur with even small doses of isosorbide mononitrate. This drug should, therefore, be used with caution in patients who may be volume depleted or who, for whatever reason, are already hypotensive. Hypotension induced by isosorbide mononitrate may be accompanied by paradoxical bradycardia and increased angina pectoris.
Nitrate therapy may aggravate the angina caused by hypertrophic cardiomyopathy. In industrial workers who have had long-term exposure to unknown (presumably high) doses of organic nitrates, tolerance clearly occurs. Chest pain, acute myocardial infarction, and even sudden death have occurred during temporary withdrawal of nitrates from these workers, demonstrating the existence of true physical dependence.
The importance of these observations to the routine, clinical use of oral isosorbide mononitrate is not known. Information for Patients Patients should be told that the antianginal efficacy of isosorbide mononitrate extended-release tablets can be maintained by carefully following the prescribed schedule of dosing. For most patients, this can be accomplished by taking the dose on arising.
As with other nitrates, daily headaches sometimes accompany treatment with isosorbide mononitrate. In patients who get these headaches, the headaches are a marker of the activity of the drug. Patients should resist the temptation to avoid headaches by altering the schedule of their treatment with isosorbide mononitrate, since loss of headache may be associated with simultaneous loss of antianginal efficacy.
Aspirin or acetaminophen often successfully relieves isosorbide mononitrate-induced headaches with no deleterious effect on isosorbide mononitrate’s antianginal efficacy. Treatment with isosorbide mononitrate may be associated with lightheadedness on standing, especially just after rising from a recumbent or seated position. This effect may be more frequent in patients who have also consumed alcohol.
Drug Interactions The vasodilating effects of isosorbide mononitrate may be additive with those of other vasodilators. Alcohol, in particular, has been found to exhibit additive effects of this variety. Marked symptomatic orthostatic hypotension has been reported when calcium channel blockers and organic nitrates were used in combination.
Dose adjustments of either class of agents may be necessary. Drug/Laboratory Test Interactions Nitrates and nitrites may interfere with the Zlatkis-Zak color reaction, causing falsely low readings in serum cholesterol determinations. Carcinogenesis, Mutagenesis, Impairment of Fertility No evidence of carcinogenicity was observed in rats exposed to isosorbide mononitrate in their diets at doses of up to 900 mg/kg/day for the first 6 months and 500 mg/kg/day for the remaining duration of a study in which males were dosed for up to 121 weeks and females were dosed for up to 137 weeks.
No evidence of carcinogenicity was observed in mice exposed to isosorbide mononitrate in their diets for up to 104 weeks at doses of up to 900 mg/kg/day. Isosorbide mononitrate did not produce gene mutations (Ames test, mouse lymphoma test) or chromosome aberrations (human lymphocyte and mouse micronucleus tests) at biologically relevant concentrations. No effects on fertility were observed in a study in which male and female rats were administered doses of up to 750 mg/kg/day beginning, in males, 9 weeks prior to mating, and in females, 2 weeks prior to mating.
Pregnancy Teratogenic Effects Pregnancy Category B. In studies designed to detect effects of isosorbide mononitrate on embryo-fetal development, doses of up to 240 or 248 mg/kg/day, administered to pregnant rats and rabbits, were unassociated with evidence of such effects. These animal doses are about 100 times the maximum recommended human dose (120 mg in a 50 kg woman) when comparison is based on body weight; when comparison is based on body surface area, the rat dose is about… [Excerpted — this section continues on DailyMed.]
📄 Package Label / Principal Display Panel ▾
Package/Label Display Panel MAJOR® NDC 0904-6449-61 Unit Dose Isosorbide Mononitrate Extended-Release Tablets, USP 30 mg 100 TABLETS (10 x 10) Rx only 30mg carton label
Package/Label Display Panel MAJOR® NDC 0904-6450-61 Unit Dose Isosorbide Mononitrate Extended-Release Tablets, USP 60 mg 100 TABLETS (10 x 10) Rx only 60mg carton label