Abisart

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Abisart

Property Description
Active Ingredient Irbesartan
Form Oral Tablet (compressed solid)
Pharmacological Class Angiotensin II Receptor Blocker (ARB)
General Purpose Management of vascular tension
Origin/Type Synthetic Compound

Abisart: Definition and Pharmacological Classification

Abisart is a single-ingredient, synthetic medication, provided as a prescription-only oral tablet, whose active compound is Irbesartan. It belongs to the high-level pharmacological class known as Angiotensin II Receptor Blockers (ARBs), placing it within the Sartan group of antihypertensive agents. This classification confirms the medication is designed to reliably interfere with a key biological pathway and is clinically recognized for its systemic role in vascular management.

Composition and Drug Form: What is Irbesartan?

The sole active ingredient, Irbesartan, is a complex, synthetic molecule described as a non-peptide biphenyl-substituted imidazole derivative. This structure provides all the therapeutic activity. In its finished form, Abisart is an oral tablet that delivers the active substance, Irbesartan (C25H28N4O), integrated with necessary solid excipients to ensure stable, single-component administration. Unlike many combination therapies, Abisart's single-agent nature ensures that its actions are solely attributed to Irbesartan's established profile, making it a predictable monotherapy option.

General Purpose and Therapeutic Context

The general purpose of Abisart is to support the cardiovascular system by managing vascular tension. It achieves this by selectively binding to and blocking the Angiotensin II Type 1 (AT1) receptors, which are responsible for vessel constriction. By reducing the overall resistance in the circulatory system through this targeted action, the medicine helps to maintain healthy blood pressure levels and supports smoother blood flow. This mechanism provides a focused and reliable means of assisting the heart and maintaining cardiovascular stability.

What side effects are possible with Abisart?

The safety characteristics of Abisart (Irbesartan), an Angiotensin II Receptor Blocker (ARB), are formally documented by regulatory authorities (such as the FDA and EMA) with adverse reactions categorized by their frequency and the physiological system affected.

Documented Adverse Reaction Frequencies

Official prescribing information classifies adverse reactions based on their expected rate of occurrence:

  • Very Common reactions (occurring in ge 1/10 individuals) include Hyperkalemia (elevated blood potassium levels), particularly noted in patients with Type 2 Diabetes and nephropathy.
  • Common effects (occurring in ge 1/100 to < 1/10 individuals) involve the Nervous System and General Disorders, such as dizziness, headache, fatigue, and nausea or vomiting. Musculoskeletal pain is also classified as common.
  • Uncommon effects (occurring in ge 1/1,000 to < 1/100 individuals) include tachycardia, flushing, diarrhoea, and sexual dysfunction.

Reactions reported post-marketing, where frequency is generally classified as Not Known, include serious effects such as Angioedema (swelling of the face, lips, and throat) and severe Hepatitis.

Population-Specific Safety Notes

The regulatory label includes specific safety constraints for certain patient groups. Abisart is contraindicated during the second and third trimesters of pregnancy due to the risk of fetal injury. Furthermore, the risk of symptomatic hypotension and potential renal function impairment is noted for individuals with volume depletion or pre-existing renal conditions. Orthostatic dizziness may be more prominent at the initiation of treatment.

Overdose and Emergency Response

Overdose and When to Seek Help

If you believe you have taken too much Abisart, you must seek urgent medical attention immediately.

Symptoms of overdosage are primarily related to the cardiovascular system, which may result in hypotension (low blood pressure), leading to feelings of lightheadedness or dizziness. The most likely presentations of a significant overdose are expected to be hypotension and an altered heart rate, which may be either tachycardia (fast heart rate) or bradycardia (slow heart rate).

Required Emergency Actions

In the event of a suspected overdose, you should immediately contact your local poison control center or proceed to the Emergency Department at your nearest hospital. You must do this even if you are not currently experiencing any signs of discomfort.

Medical management of Abisart overdose is generally symptomatic and supportive. Following exposure, the patient is to be closely monitored and stabilized. Measures suggested in regulatory documents include the use of activated charcoal and procedures such as gastric lavage. It is important to know that the active ingredient in Abisart, irbesartan, is not removed by haemodialysis (a form of blood filtering).

Patients should be aware of the possibility of multiple-drug interactions and unusual drug kinetics in overdose situations, as stated in official labeling.

Therapeutic Uses of Abisart

Main Therapeutic Uses

Abisart is primarily indicated for the management of conditions affecting the cardiovascular system. Its active component belongs to a class of medications known as angiotensin II receptor blockers (ARBs).

Essential Hypertension

The primary use of this medication is for the treatment of essential hypertension, which is high blood pressure that does not have a single identifiable cause. By helping to manage blood pressure levels, the medication assists in reducing the workload on the heart and arteries.

Renal Protection in Type 2 Diabetes

This medication is also utilized to treat kidney disease in patients with type 2 diabetes and a history of hypertension. It is specifically used when there is clinical evidence of impaired kidney function, often characterized by the presence of protein in the urine. In these cases, the treatment aims to slow the progression of kidney damage.


Clinical Benefits

The benefits of treatment are centered on long-term cardiovascular and renal health. By regulating the biological pathways that cause blood vessels to constrict, the medication facilitates better blood flow and pressure management.

  • Blood Pressure Regulation: Consistent use helps maintain blood pressure within a target range, which is a fundamental aspect of cardiovascular care.
  • Reduction of Cardiovascular Risk: Lowering elevated blood pressure is a key factor in reducing the long-term risk of serious cardiovascular events, such as strokes and myocardial infarctions (heart attacks).
  • Slowing Kidney Disease Progression: In patients with diabetes and hypertension, the medication provides a protective effect on the kidneys, helping to delay the advancement of chronic renal failure.

Regulatory References

  1. NIH DailyMed Drug Information

Eligibility and Restrictions for Use

Eligibility for Irbesartan (Abisart)

Abisart is officially approved for use in adults (18 years and older). Use in older adults is generally permitted without a standard dose adjustment. However, the safety and efficacy of the medicine have not been established for children and adolescents (0–18 years), and its use is not recommended in this age group.

Absolute Prohibitions (Contraindications)

Regulatory documents state that Abisart is contraindicated for several populations:

  • Patients with known hypersensitivity to Irbesartan or any component of the tablet.
  • Women in the second and third trimesters of pregnancy.
  • Patients with diabetes mellitus or certain degrees of renal impairment (GFR < 60 mL/min/1.73m²) who are also taking products containing Aliskiren.

Restricted Use and Specific Conditions

Use is not recommended for women who are breastfeeding or for patients diagnosed with severe hepatic impairment or primary aldosteronism. Patients who are significantly volume- or salt-depleted require correction of this condition prior to administration. Although use is allowed in mild-to-moderate renal and hepatic impairment, special caution is indicated in patients with renal artery stenosis.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Abisart (irbesartan) interacts with several medicinal products and substance categories, primarily affecting potassium levels, renal function, and drug exposure.

Contraindicated Combinations:

  • Aliskiren: The co-administration of Abisart with aliskiren is contraindicated in patients with diabetes mellitus or with moderate-to-severe renal impairment.
  • ACE Inhibitors: Co-administration with an ACE inhibitor is contraindicated in patients with diabetic nephropathy.

Key Interacting Substances and Effects:

Substance Category Regulatory Requirement / Effect
Potassium-Raising Agents (e.g., K-sparing diuretics, K supplements) Increased risk of hyperkalemia; necessitates monitoring of serum potassium levels.
Lithium Reduces the renal clearance of lithium, leading to increased lithium serum concentrations and risk of toxicity. Close monitoring is mandated.
Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) May reduce the antihypertensive effect of Abisart and can increase the risk of deterioration of renal function.

Metabolic and Food Considerations:

Abisart is primarily metabolized by the cytochrome P450 isoenzyme CYP2C9. While the antifungal fluconazole has been shown to increase Abisart's systemic exposure, this is generally not considered clinically significant. The official labeling states that Abisart may be taken with or without food, as meals do not result in a clinically relevant interaction.

Mechanism of Action

Selective Blockade of the AT1 Receptor

Abisart (Irbesartan) functions as a selective Angiotensin II Receptor Blocker (ARB) by acting as a competitive antagonist at the Angiotensin II Type 1 (AT1) receptor. This mechanism prevents the potent vasoconstrictor hormone, Angiotensin II, from binding to its primary receptor, inhibiting the signaling cascade responsible for smooth muscle contraction. The selective and non-activating blockade of AT1 represents the drug's core molecular action.


Modulation of Vascular Tone and Systemic Resistance

By blocking the AT1 receptor, Abisart interrupts the key neurohormonal pathway responsible for the mediation of blood vessel diameter and volume, known as the Renin-Angiotensin System (RAS). This interruption leads to systemic vasodilation and decreases the signal for aldosterone release, which normally causes the retention of salt and water. The resulting physiological consequence is a reduction in Peripheral Vascular Resistance (PVR).


Cellular Anti-Remodeling Mechanism

Beyond immediate vascular effects, the drug’s mechanism also involves the suppression of AT1-mediated cell proliferation signals in the heart and blood vessels. This sustained inhibition is associated with a cellular anti-remodeling effect, which addresses chronic, structural changes associated with heightened cardiovascular signaling.

Dosage and Administration Information

How to Use Abisart

Abisart (Irbesartan) is administered as an oral tablet and is typically part of a long-term plan for managing chronic conditions. Standard usage guidelines define the routes, dosing ranges, and frequency of administration, maintaining a clear separation from therapeutic outcomes or safety considerations.


Official Administration Guidelines

Abisart is taken once daily (every 24 hours), and the tablet may be administered with or without food. The standardized approach for adult use involves specific dosage ranges and rules for dose adjustment, typically taking 2 to 4 weeks to reach the maximum blood pressure effect after a change in dosage.


Standard Dosing Regimens

The most common initial dose for adult use is 150 mg once daily. The standard adult maintenance range runs from 150 mg up to a maximum recommended dose of 300 mg once daily. For patients managing kidney function in the context of Type 2 Diabetes (diabetic nephropathy), the typically established dose is 300 mg once daily.


Population-Specific and Missed Dose Instructions

Specific instructions exist for patients who may be more sensitive to initial treatment. A lower starting dose of 75 mg once daily is outlined for volume- or salt-depleted patients. A starting dose of 75 mg may also be considered for older adults, particularly those over 75 years of age. If a dose is missed, it is generally advised against taking a double dose to compensate; if it is nearly time for the next scheduled dose, the missed dose should be skipped.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Abisart

This overview summarizes the type of research available for Abisart (Irbesartan), focusing on the goals of the studies, the outcomes they measured, and areas where evidence is still emerging or uncertain. This information is based on official clinical trials and regulatory summaries.


Evidence for Use in Managing Essential Hypertension

Research into the management of chronic high blood pressure primarily relies on Randomized Controlled Trials (RCTs). These studies were designed to compare the compounds studied against a placebo or other treatments. The main objective was to precisely measure changes in blood pressure—specifically the systolic and diastolic numbers—when taken over defined time intervals. Researchers also looked at long-term patterns of cardiovascular outcomes. Studies reported measurements related to blood pressure changes in the studied populations. This research contributes to understanding symptom patterns and examining a key factor related to systemic or functional imbalance.

What remains uncertain is that certain studies have observed that the reported blood pressure response may vary across different patient groups. Specifically, a noted variability in the blood pressure response described in black patients has been reported in the research.


Evidence for Use in Managing Diabetic Nephropathy

Large-scale, long-term clinical trials were utilized to explore the use of Abisart in patients managing both Type 2 Diabetes and chronic high blood pressure with signs of kidney strain. The researchers primarily studied outcomes related to renal function over time. They monitored a Primary Composite Renal Endpoint, which tracked events like the doubling of serum creatinine, the need for dialysis or transplant, or death from any cause. The main trials described patterns of the primary composite renal endpoint across the groups studied.

What remains uncertain is that these dedicated renal outcome trials did not consistently describe a difference in the frequency of composite cardiovascular outcomes when comparing the studied compound to control groups. Data for certain groups, such as patients with very advanced chronic kidney disease, remain insufficient.


Long-Term Research and Durability of Response

Clinical studies have explored the durability of Abisart in relation to its studied outcomes over defined time intervals, with the key renal research having a median follow-up of approximately 2.6 years. Research provides insight into short-term changes, but long-term effects are not fully established across all outcomes, especially when looking beyond the primary endpoints.

Key Studies & References

  1. Irbesartan Tablet (Irbesartan) - NIH DailyMed Drug Information (US Regulatory Labeling)
  2. Irbesartan Drug Information (MedlinePlus - Authoritative Summary)

Frequently Asked Questions (FAQ)

Common questions about Abisart (FAQ)

Q: What is Abisart typically prescribed for?

According to regulatory documents, Abisart is described as indicated for two main uses: the treatment of hypertension (high blood pressure) and the management of diabetic nephropathy (kidney disease) in hypertensive patients with Type 2 diabetes. This information is based on the formal indications listed in the official product information.

Q: Is Abisart used to treat conditions other than high blood pressure?

Official regulatory sources indicate that Abisart has more than one formal use. In addition to treating high blood pressure, it is also described as indicated for the management of diabetic nephropathy (a complication affecting the kidneys) in patients who also have Type 2 diabetes.

Q: How quickly should a person expect Abisart to start working?

Official drug information describes the onset of action as relatively quick, showing an initial reduction in blood pressure within about 2 hours of the first dose. However, official documents describe that it can take 4 to 6 weeks for the maximum blood pressure-lowering effect to be observed.

Q: Can Abisart be taken with over-the-counter pain relievers like ibuprofen or aspirin?

Official regulatory labeling requires caution when taking Abisart with Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), a class that includes medicines like ibuprofen. These combinations may potentially reduce the effectiveness of Abisart. Additionally, combining these medicines may be associated with an increased risk of deterioration of renal (kidney) function, according to official product information.

Q: Is Abisart officially contraindicated during pregnancy or breastfeeding?

The medication is officially described as contraindicated during the second and third trimesters of pregnancy due to the potential risk of injury to the fetus. Regarding breastfeeding, official information suggests that an alternate medication may be considered while breastfeeding, as information on its presence and effect in breast milk is not yet fully established.

Q: Can people with pre-existing kidney conditions safely use Abisart?

Official documents caution that patients with certain pre-existing renal (kidney) conditions may be at risk for developing changes in kidney function, including acute renal failure. Regulatory documents note the importance of periodic monitoring of kidney function to track these changes during treatment.

Q: Is Abisart safe for use in older adults (e.g., over 65)?

Official European guidance indicates that treatment in older adults is possible, but often involves extra caution. Official guidance notes that a lower starting dose may be considered for patients who are over 75 years of age. This suggests that while used in this population, treatment is described as requiring specific consideration.

Q: Does Abisart require regular blood tests or monitoring?

Official documentation highlights that monitoring is important for certain factors during treatment. Official documentation indicates that renal (kidney) function should be monitored periodically. Additionally, monitoring of serum potassium levels is noted as important, especially if the medicine is combined with other potassium-raising agents.

Q: Does Abisart affect electrolyte levels in the body?

Regulatory documents list hyperkalemia (elevated blood potassium levels) as a Very Common adverse reaction, particularly in patients with Type 2 diabetes and nephropathy. This indicates that the medication can affect electrolyte levels, specifically potassium.

Q: Is the effect of Abisart described as different from ACE inhibitors?

Studies cited in official documents have noted a difference when comparing Abisart to a related class of drugs called ACE inhibitors. Specifically, official data indicates that the reported incidence of cough for Abisart is comparable to the rate observed with placebo, which differs from the higher incidence often seen with ACE inhibitors.

Q: Is it true that Abisart can cause a chronic dry cough?

No, a chronic dry cough is not commonly associated with Abisart. Clinical trial data indicates that the incidence of cough is low and similar to the rate seen with placebo. This is a point of difference compared to the higher rates of cough reported for ACE inhibitor medications.

Q: Is Abisart a first-line treatment option, according to official guidelines?

Major treatment guidelines, which are referenced in official regulatory summaries, describe Angiotensin II Receptor Blockers (ARBs) like Abisart as a recommended option for treating hypertension. These guidelines generally address the initiation of drug therapy once a patient's blood pressure exceeds certain thresholds.

Q: Does Abisart commonly cause changes in weight (gain or loss)?

Post-marketing surveillance data referenced in official documents lists weight gain as a rare adverse reaction. This indicates that while it is possible, this side effect is not commonly encountered. Weight loss is not officially noted in the same context.

Q: Are there any foods or beverages that should be limited when taking Abisart?

Official labeling advises patients to avoid potassium-containing salt substitutes and potassium supplements. This caution is associated with an increased risk of hyperkalemia (elevated blood potassium levels).

Q: Is it okay to consume alcohol while taking Abisart, according to official sources?

Official safety information describes that consuming alcohol may have an additive effect in lowering blood pressure when combined with Abisart. This combination can increase the risk of side effects like dizziness, lightheadedness, or fainting, especially during the first few weeks of therapy.

Q: Are there official warnings about Abisart for people with liver disease?

Regulatory documents suggest that caution and dose adjustment may be necessary for patients with certain degrees of hepatic (liver) impairment. This information highlights the need for careful consideration during treatment planning for this specific population.

Q: Are there specific pediatric uses or safety data available for Abisart?

Official regulatory documents state that the safety and efficacy of Abisart have not been established in children younger than 6 years of age. For children older than 6, use is generally determined on a case-by-case basis under a doctor's guidance.

Q: Are there any known contraindications for people with a history of angioedema?

The medication is officially described as contraindicated in patients with a known hypersensitivity to the active substance. Post-marketing reports have included cases of angioedema (severe swelling of the face, lips, or throat), and official guidance notes that discontinuation of the drug is generally necessary if this reaction occurs.

Q: Is Abisart approved by the FDA (or similar regulatory body) for all its described uses?

Yes. The two officially described uses of Abisart—the treatment of hypertension and the management of diabetic nephropathy—are explicitly described as approved indications in the regulatory labeling from agencies like the FDA.

Q: Does the official information mention any effect of Abisart on libido?

While the term libido is not specifically mentioned, the official prescribing information does list sexual dysfunction as an uncommon adverse effect. This indicates that some patients may experience issues related to sexual function while taking this medication.

Q: What is the process for reporting a possible side effect of Abisart to a regulatory body?

Official prescribing information advises that patients can report suspected side effects directly to their national health authority. This process may involve systems such as the FDA’s MedWatch program or similar national systems.

Q: Is Abisart classified as a controlled substance in the US?

Official classification documents confirm that the active ingredient, Irbesartan, is not classified as a controlled substance by the Drug Enforcement Administration (DEA) in the United States. It is categorized as a prescription-only medication.

Q: Are there studies examining the long-term safety profile of Abisart?

Clinical studies have explored the durability of the drug over defined intervals, with follow-up periods of approximately 2.6 years in key renal trials. Official research summaries indicate that while data exists for these periods, the long-term effects are not fully established across all measured outcomes beyond the primary endpoints.

How should Abisart be stored and disposed of?

How to Store and Dispose of Abisart?

This medication must be stored according to official regulatory requirements to ensure its stability and effectiveness.

Storage Category Official Requirements
Temperature Keep in a cool dry place where the temperature stays below 25 C
Environmental Protection Store away from moisture, heat, and sunlight.
Packaging Keep the tablets in the original packaging (blister pack) until the time of administration.
Child Safety Keep it out of the reach of children at all times.
Disposal Do not keep outdated or unused medicine. Any unused medicinal product or waste material should be disposed of in accordance with local requirements, often by returning it to a pharmacist or utilizing a drug take-back program.

Storage is restricted; do not store the product in environments such as the car, on window sills, in the bathroom, or near a sink. If the medicine is expired or no longer needed, it must be disposed of safely as instructed by a healthcare professional or local regulations, and should not be discarded in household trash or flushed unless specifically advised.

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

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