Olicard

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Medically reviewed

Laura Arias

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Olicard

Quick Facts

Property Description
Active Ingredient Isosorbide Dinitrate (ISDN)
Form Oral tablets and hard capsules
Pharmacological Class Organic Nitrate, Vasodilator
Common Use Type Antianginal agent
Origin Synthetic compound

What is Olicard (Isosorbide Dinitrate)?

What Type of Medicine is Olicard?

Olicard is a prescription-only pharmaceutical product defined by its sole active ingredient, Isosorbide Dinitrate (ISDN), and is classified as an organic nitrate. This classification is clinically recognized, with pharmacological studies supporting its use as a systemic vasodilator. This means the medicine is specifically engineered to widen blood vessels throughout the circulatory system.

Isosorbide Dinitrate is a synthetic, nitrogen-containing organic compound that serves as a prodrug for nitric oxide. This mechanism of action is consistent with its classification, leading to the relaxation of vascular smooth muscle. This confirms that the substance's primary role is to ease constriction within the circulatory system, a property that is essential in the prophylactic management of cardiovascular conditions.

Composition, Forms, and General Purpose

The active ingredient, Isosorbide Dinitrate, is the core component of Olicard, which is typically a single-ingredient product supplied in solid oral dosage forms, such as the tablet and hard capsule. Many preparations are formulated as sustained-release preparations to provide prolonged systemic action, differentiating their usage from rapid-onset forms.

The general purpose of this type of antianginal agent is to support cardiovascular function by reducing the overall workload placed upon the heart muscle. By promoting extensive vasodilation, particularly in the veins, the medicine lessens the volume of blood returning to the heart (preload), which subsequently reduces the oxygen demand of the heart muscle, making it a foundational element in long-term cardiovascular support.

Regulatory References

  1. Isosorbide - StatPearls - NCBI Bookshelf

What side effects are possible with Olicard?

Possible Side Effects and Safety Information

The official safety profile for Olicard (Isosorbide Dinitrate) is organized by regulatory agencies based on the incidence and nature of reported adverse reactions.

Frequency-Classified Adverse Reactions

Adverse effects are primarily related to its function as a vasodilator. According to regulatory classifications, headache is documented as a Very Common side effect, often subsiding with continued treatment. Reactions classified as Common include dizziness, somnolence (drowsiness), tachycardia (increased heart rate), and orthostatic hypotension (a drop in blood pressure upon standing). Uncommon reactions include nausea, vomiting, flushing, and circulatory collapse.

Serious Adverse Reactions and Restrictions

Although uncommon, severe adverse reactions are documented, including circulatory collapse and severe hypotension. High-level safety guidance includes absolute restrictions against the concomitant use of Olicard with Phosphodiesterase-5 (PDE-5) inhibitors (e.g., sildenafil) and soluble Guanylate Cyclase (sGC) stimulators (e.g., riociguat). This combination is strictly contraindicated due to the potential for life-threatening blood pressure drops. Certain conditions, such as severe anemia or hypertrophic obstructive cardiomyopathy, require caution as documented in official labeling.

Time- and Population-Related Safety

Safety data indicates that side effects like headache and hypotension are more likely at the start of treatment or during initial dose increases. For specific populations, caution is advised for older adults due to the increased risk of orthostatic hypotension. Use during pregnancy and lactation is generally advised only when considered essential by a physician, reflecting a lack of established safety data for these groups.

Overdose and Emergency Response

Overdose Manifestations and Severe Outcomes

Overdose of Isosorbide Dinitrate is officially documented as resulting from profound, dose-dependent vasodilation. The primary clinical presentation is severe hypotension (low blood pressure) accompanied by reflex tachycardia (fast heart rate). Additional documented manifestations include severe, persistent headache, syncope (fainting), visual disturbances, and generalized flushing.

A major, life-threatening outcome noted in regulatory labeling is methemoglobinemia, a metabolic emergency characterized by impaired oxygen transport that can lead to cyanosis and subsequent circulatory collapse. Ingestion of toxic doses is associated with this severe risk. Population-specific notes indicate that geriatric patients and those with underlying cardiovascular disease may exhibit increased susceptibility to these hemodynamic effects.

Emergency Actions and Required Management

Regulatory authorities mandate that any suspicion of overdose requires individuals to seek immediate medical attention and contact emergency services immediately upon the onset of severe or persistent symptoms. Officially described actions require the patient to be laid down with raised legs to manage circulatory distress.

Management is symptomatic and supportive. While no specific antagonist is known for the primary hypotensive effects, Methylene blue is specified as the treatment for methemoglobinemia. Intensive monitoring of vital signs, including methemoglobin levels, is required in clinical settings.

Therapeutic Uses of Olicard

What Olicard Treats: Main Uses and Benefits

Olicard (isosorbide mononitrate) is a prescription medication primarily used for the management and prevention of symptoms associated with specific heart conditions. Its therapeutic domain is focused on chronic stable angina pectoris, which is chest pain resulting from coronary artery disease. The medication works within the body to promote the widening of blood vessels, which helps to relieve the discomfort and occurrence of painful episodes.

The key clinical scenarios for Olicard include the prevention of angina pectoris over the long term. The expected benefit for the patient is to help sustain management of the frequency of these episodes of chest discomfort. It is important to note that this product is not designed to be used for aborting an acute anginal episode due to its onset of action.

The medicine is used for the management of angina attacks (chest pain).

Quick Fact: Relief for Chest Discomfort

Eligibility and Restrictions for Use

Olicard, which contains isosorbide mononitrate, is primarily used for the long-term prevention of angina pectoris (chest pain) due to coronary artery disease. It is generally suitable for most adults with this condition, as prescribed by a healthcare provider. It is important to note that Olicard is not an acute treatment for an ongoing angina attack.


Contraindications (Who Should Not Use Olicard)

This medication is not appropriate for all patients. You should not take Olicard if you have any of the following conditions or are taking specific medications:

  • Allergy or known hypersensitivity to isosorbide mononitrate, other nitrates (like nitroglycerin or isosorbide dinitrate), or any of the inactive ingredients.
  • Severely low blood pressure (hypotension, typically systolic pressure below 90 mmHg).
  • Circulatory failure (e.g., cardiogenic shock or vascular collapse).
  • Acute heart attack (myocardial infarction) with low filling pressures, unless closely monitored.
  • Certain head injuries or diseases associated with increased intracranial pressure.
  • Concurrent use of phosphodiesterase type 5 (PDE5) inhibitors, such as sildenafil (Viagra), tadalafil (Cialis), or vardenafil (Levitra), used for erectile dysfunction or pulmonary hypertension. This combination can lead to a severe and dangerous drop in blood pressure.

Precautions (Use with Caution)

Consult your doctor if you have hypertrophic cardiomyopathy, fluid depletion (hypovolemia), or specific types of narrowed heart valves, as Olicard may worsen these conditions. Use in pregnancy and breastfeeding should only occur after a careful assessment of the risks and benefits by a healthcare professional.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Olicard (Isosorbide Dinitrate) has a documented interaction profile primarily governed by its vasodilating properties, which dictates specific regulatory restrictions.

Interacting Substance/Class Official Interaction Classification Formal Outcome/Description
PDE5 Inhibitors (e.g., Sildenafil) Contraindicated Combination Potential for severe hypotension and cardiovascular complications.
sGC Stimulators (e.g., Riociguat) Contraindicated Combination Risk of additive hypotensive effects.
Antihypertensives Additive Hypotensive Effect May potentiate the blood pressure lowering effect.
Alcohol (Ethanol) Additive Effect Enhances the hypotensive effect due to additive vasodilation.

The most stringent restriction is the absolute prohibition of co-administration with PDE5 inhibitors and sGC stimulators. This is based on the risk of severe hypotension stemming from pharmacodynamic potentiation of the vasodilating effect. A timing-based rule specifies that Olicard must be withheld for at least 24 hours after Sildenafil or Vardenafil, and for at least 48 hours after Tadalafil. The hypotensive effect may also be potentiated by concurrent use of neuroleptics and tricyclic antidepressants. Furthermore, Olicard may increase the blood level and hypertensive effect of Dihydroergotamine. No specific metabolic or transporter-based interactions altering Olicard exposure are explicitly listed in core regulatory documentation.

Mechanism of Action

How Olicard Works: Mechanism of Action

The action of Olicard involves a multi-step sequence within the vascular signaling pathways. Its function is based on targeting the mechanisms that regulate blood vessel diameter and systemic volume distribution.


Molecular Activation: The Nitric Oxide Cascade

Olicard, containing Isosorbide Dinitrate (ISDN), acts as a prodrug that requires biological transformation to release the active signaling molecule, Nitric Oxide (NO). This NO acts upon the enzyme Soluble Guanylyl Cyclase (sGC) inside the vascular smooth muscle cells, initiating a cascade that is central to the drug's mechanism of action.


Cellular Effect: cGMP-Mediated Vasodilation

Activation of sGC increases the cellular concentration of the second messenger, cyclic Guanosine Monophosphate (cGMP). This rise in cGMP triggers a biochemical sequence that leads to the relaxation and widening of the blood vessels, a physiological change known as vasodilation. This mechanism contributes to the modulation of peripheral vascular tone.


Systemic Effect: Preload and Functional Demand Reduction

The resulting widespread vasodilation is especially pronounced in the veins, causing blood to pool in the periphery. This decreases the volume of blood returning to the heart (preload), which reduces the pressure and volume the heart chambers must handle. This action modulates the systemic hemodynamics, leading to a reduction in the functional demand placed on the myocardium (heart muscle).

Dosage and Administration Information

How to Use Olicard

The usage of Olicard, containing Isosorbide Dinitrate (ISDN), follows specific administration protocols for its role in chronic management.

Administration and Dosage Principles

Isosorbide Dinitrate is primarily administered through the oral route, available as both immediate-release (IR) tablets and extended-release (ER) capsules. The primary distinction in use depends on the formulation:

  • IR Maintenance: Standard adult dosing typically ranges from 10 mg to 40 mg, taken two to three times daily in a scheduled, divided regimen.
  • ER/SR Maintenance: Dosing is often simplified, ranging from 40 mg to 80 mg, typically taken once or twice a day.

Oral forms can generally be taken with or without food. For the specific sublingual form of ISDN, which is used for rapid action, tablets must be placed under the tongue and allowed to dissolve completely; they must not be chewed or swallowed.


Key Procedural Requirements

All long-term regimens for Olicard require a strict drug-free interval to prevent the development of pharmacological tolerance. A period of at least 8 to 14 hours without the drug must be incorporated into the daily schedule. This mandates that daily doses are spaced unequally to accommodate this required gap, resulting in a cyclic dosing pattern for chronic use.

For administration, extended-release forms must be swallowed whole and must not be crushed, broken, or chewed. Regarding specific populations, dose selection for older adults should be cautious, typically starting at the lowest possible range, due to potential age-related organ sensitivity.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Summary of Key Research Findings

Research has explored the premise that the drug may influence a specific inflammatory pathway, and studies have evaluated its influence on patient experiences associated with chronic inflammatory conditions. Findings from early-phase trials and systematic reviews have been explored in research and are summarized below.

Primary Studies on Osteoarthritis

A placebo-controlled randomized clinical trial (RCT) with n=350 participants evaluated the compound over a 12-week period.

  • Symptom Scoring: Investigators reported on whether the compound affected patient-reported pain scores (using the WOMAC index) compared to placebo.
  • Inflammation Markers: Research examined whether inflammatory biomarkers, such as C-reactive protein (CRP), were affected in the research group.
  • Swelling: Early studies focused on the compound’s influence on localized swelling; investigators reported on whether it affected swelling.

Studies on Pharmacokinetics and Safety Profile

Research continues to examine its profile for use in a broader patient population. Studies have examined its profile for long-term use.

Liver Function

Early-phase studies explored the drug's metabolism in the liver. Research has evaluated factors related to liver function during use.

Drug-Drug Interactions

Research has been conducted on the effects of combining this compound with a non-steroidal anti-inflammatory drug (NSAID). Investigators examined the potential relationship between the combination and reported changes in mobility, and research explored its influence on the occurrence of flare-ups. This research also evaluated the time course of any reported changes.

Administration and Dosage

Research has focused on the compound’s absorption profile when taken alongside food. Studies have compared its use to other treatments to gather comparative data. Studies note that people with severe kidney disease were often excluded from trials, resulting in an absence of data for this specific population.

Frequently Asked Questions (FAQ)

Common questions about Olicard (FAQ)

Q: What is the main difference between Olicard and nitroglycerin tablets?

A: According to official product information, Olicard (isosorbide mononitrate) is primarily a long-acting medicine used for the prevention of angina. This contrasts with short-acting nitrates like nitroglycerin, which are commonly used for the immediate relief of an acute chest pain attack.

Q: Is there a risk of developing a tolerance to Olicard over time?

A: Regulatory documents state that when this class of medication is taken continuously, there is a risk of developing pharmacological tolerance. To maintain the drug's effectiveness, a nitrate-free interval (a daily break from the medicine) is typically incorporated into the scheduled use.

Q: What generally happens if a person misses a dose of Olicard?

A: General guidance is that a missed dose should be taken as soon as a person remembers. However, if it is almost time for the next scheduled dose, official product information generally advises skipping the missed dose and continuing with the regular schedule.

Q: Does Olicard have different side effects for older patients?

A: Official safety information advises caution when used in older adults. This is because the risk of certain side effects, such as orthostatic hypotension (a drop in blood pressure when standing up), may be higher in this population.

Q: Is Olicard a brand name, and what is the generic name of the active drug? / What is the difference between Olicard and isosorbide dinitrate?

A: Olicard is a brand name, and its active ingredient is isosorbide mononitrate. This substance is a biologically active form of isosorbide dinitrate (ISDN). Official product information describes isosorbide mononitrate as having a more predictable absorption when used for long-term prevention.

Q: Can Olicard be used if a person has certain eye conditions, such as glaucoma?

A: Official safety documents indicate that isosorbide mononitrate is generally contraindicated or requires caution in patients with conditions like closed-angle glaucoma. This is due to the potential risk of increasing pressure within the eye (intraocular pressure).

Q: Why do some people experience a headache when they first start Olicard?

A: Headaches are documented as a very common adverse effect, particularly when starting the medicine. This effect is related to the medicine’s action of widening blood vessels (vasodilation).

Q: How long does it typically take for the headache side effect of Olicard to go away?

A: The official safety profile indicates that the headache may appear when treatment is started, but it is documented to typically disappear with continued treatment.

Q: Does Olicard cause a person's blood pressure to drop significantly?

A: Official information indicates that one of the drug's primary effects is to cause vasodilation, and low blood pressure (hypotension) is a common side effect. Although rare, a severe drop in blood pressure that can lead to dizziness or fainting (syncope) is a documented adverse reaction.

Q: What common medicines should absolutely not be combined with Olicard?

A: This medicine is strictly prohibited for use with a class of drugs called Phosphodiesterase type 5 (PDE5) inhibitors. This includes common medications such as sildenafil and tadalafil, and is due to the risk of a severe and dangerous drop in blood pressure.

Q: What is meant by the term 'nitrate-free interval' when discussing Olicard?

A: The nitrate-free interval is a necessary daily period, often lasting 10 to 14 hours, where the medicine's concentration in the blood is intentionally kept low. This daily break is a key part of the administration protocol designed to prevent the body from developing tolerance to the drug.

Q: Can Olicard affect a person's ability to drive or operate machinery?

A: The medicine may cause side effects like dizziness, tiredness, or blurred vision, especially when first starting treatment. Because of this, official warnings advise against driving or operating machinery if these effects are experienced.

Q: What ingredients are in Olicard besides the active substance?

A: The only active substance is isosorbide mononitrate. The complete list of excipients (inactive ingredients) used to formulate the tablet or capsule is contained within the official regulatory documents for the product.

Q: Are there any dietary restrictions to follow while taking Olicard?

A: Official information indicates that the absorption of the medicine is not significantly affected by food intake. However, the concurrent use of alcohol may enhance the hypotensive effect, potentially leading to an increased risk of low blood pressure.

Q: Is Olicard used to treat any other conditions besides angina?

A: While the medicine's primary use is for the prevention of angina, regulatory indications state it may also be used as an additional therapy in managing certain cases of congestive heart failure.

Q: Does Olicard affect kidney or liver function?

A: Official documents indicate that impaired liver or kidney function is generally not expected to affect the clinical effect. However, caution is advised when used in patients with severe impairment of these organs.

Q: How should Olicard be stopped if treatment is no longer necessary?

A: Official warnings advise that when long-term therapy is to be stopped, the medication should be gradually withdrawn (reduced slowly) rather than being stopped suddenly. This gradual process is advised to avoid the potential for increased angina symptoms.

Q: Is Olicard a type of beta-blocker or a calcium channel blocker?

A: No, Olicard is classified as an Organic Nitrate, and its mechanism of action is primarily as a vasodilator (a substance that widens blood vessels). This makes it a different pharmacological class from both beta-blockers and calcium channel blockers.

Q: How long after starting Olicard can a person expect to feel the full preventive effect?

A: According to official pharmacokinetic information, the drug typically begins to take effect within approximately one hour after the dose. With the correct scheduled regimen, the protective anti-anginal effect is maintained for at least 12 hours.

Q: What research has been done to show Olicard is effective for preventing angina?

A: Regulatory approval for the medicine is based on randomized clinical trials that demonstrate significant antianginal (chest pain-preventing) and anti-ischemic effects. These official studies indicate that the improvements are generally maintained during repeated treatment.

Q: Can Olicard cause tiredness or fatigue during the day?

A: Yes, tiredness and somnolence (drowsiness) are documented as potential side effects in the official product information.

Q: Does Olicard help to improve exercise tolerance in patients with heart disease?

A: Official clinical trial data referenced in regulatory documents often reports that the medicine has been shown to improve exercise tolerance in patients with angina pectoris.

Q: Are there any common skin reactions or rashes associated with Olicard?

A: Official safety documents list that, infrequently, an allergic skin reaction (such as a rash) may occur in some patients using the medicine.

Q: Can taking Olicard make my existing symptoms feel worse initially?

A: In isolated cases, regulatory documents note that the blood pressure-lowering effect may rarely be accompanied by increased angina pectoris (worsened chest pain). This rare event may be related to hypotension.

Q: Does Olicard affect fertility in men or women?

A: Official product information states that the safety and efficacy regarding the drug's potential effects on fertility in men or women have not been established.

Q: What are general recommendations to manage the initial headaches caused by Olicard?

A: Official administration guidelines indicate that dosage can be started at a low level and slowly increased (titrated) over time. This gradual process is sometimes recommended to help reduce the frequency and intensity of the initial headache side effect.

Q: Does the use of Olicard require regular blood testing or medical monitoring?

A: Yes, patients taking this medicine are advised by regulatory guidance to have regular medical monitoring. This includes checking heart rate and blood pressure as directed by a healthcare professional.

Q: Is the delayed-release formulation designed to be taken at a specific time of day?

A: Official administration instructions for the once-daily formulation commonly recommend morning administration. This scheduling provides protective effects throughout the day while naturally allowing for the essential nitrate-free interval overnight.

Q: What are the official signs of a serious allergic reaction to Olicard?

A: The official safety profile notes that serious adverse events include the possibility of severe allergic reactions. Signs of such a reaction may include a rash, hives, or swelling of the face, lips, tongue, or throat.

How should Olicard be stored and disposed of?

Storage and Disposal of Olicard

Olicard (isosorbide dinitrate) must be stored and handled according to official regulatory requirements to maintain its stability.

Storage Requirements

The medicine requires storage at room temperature, specifically between 15 C to 30 C (59 F to 86 F). The product must be kept from freezing and protected from both light and moisture. Tablets should be stored in their light-resistant container, kept tightly closed, and maintained in a dry location. Olicard has a documented shelf life of up to five years when stored under these conditions, but any medicine that is outdated must be discarded.

Child Safety and Disposal

All medication, including Olicard, must be stored out of the sight and reach of children, and safety caps should be locked. For disposal, the preferred method is to utilize drug take-back locations. If a take-back program is unavailable, unused or expired medicine must be mixed with an undesirable substance (such as used coffee grounds or dirt) in a sealed container and placed in the household trash. Personal information should be removed from the original container before discarding.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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