Телсартан

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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 Телсартан

Telmisartan is the non-proprietary name (INN) for a powerful, long-acting prescription medication. It belongs to a major class of cardiovascular drugs known as Angiotensin II Receptor Blockers (ARBs). As a prescription-only (Rx) medication, telmisartan is primarily used to manage high blood pressure, a chronic condition known as hypertension.

Quick Facts

Property Description
Active ingredient Telmisartan
Form Oral tablet
Pharmacological class Angiotensin II Receptor Blocker (ARB)
Primary use Treatment of high blood pressure
Other use Cardiovascular risk reduction

Telmisartan is a non-peptide molecule and a member of the benzimidazole chemical class. The medication works by selectively blocking the effects of angiotensin II, a naturally occurring substance in the body that causes blood vessels to constrict. By doing this, telmisartan helps to relax blood vessels, allowing blood to flow more smoothly and efficiently.

Telmisartan is indicated not only for treating hypertension but also for reducing the risk of stroke, heart attack, or death from cardiovascular problems in patients aged 55 years or older who are at high risk for serious heart disorders. It is important for patients to understand that while telmisartan helps control blood pressure, it is part of a lifelong management strategy and does not cure hypertension. Consistent daily use is required to maintain its protective effects.

What side effects are possible with Телсартан?

Possible Side Effects and Safety Information

The safety profile of Telmisartan is established through classification systems documented by regulatory authorities, such as the U.S. Food and Drug Administration (FDA) and the European Medicines Agency (EMA). Adverse reactions are categorized by frequency and grouped by the major physiological systems they affect.

Frequency-Classified Adverse Reactions

Adverse effects are officially listed according to their incidence rate:

  • Common (ge 1/100 to < 1/10): Upper respiratory tract infection (including pharyngitis and sinusitis), back pain, and diarrhea.
  • Uncommon (ge 1/1,000 to < 1/100): Anemia, hyperkalaemia, hypotension, renal impairment (including acute renal failure), and musculoskeletal pain like myalgia.
  • Rare (ge 1/10,000 to < 1/1,000): Serious reactions like Sepsis (including fatal outcome) and Angioedema (including fatal outcome) are documented, along with anaphylactic reaction and abnormal liver function.

Safety Constraints and Special Populations

Official labeling defines specific constraints for Telmisartan use:

  • Pregnancy: Telmisartan is strictly contraindicated during the second and third trimesters, as use of Angiotensin II Receptor Blockers (ARBs) during this period is associated with potential fetal injury and death.
  • Severe Impairment: The medication is contraindicated in individuals with severe hepatic impairment. Caution is also noted for patients with renal impairment due to increased risk of hyperkalaemia.
  • Dual RAS Blockade: There is a specific restriction against co-administering Telmisartan with aliskiren in patients with Type 2 diabetes due to an increased risk of severe adverse outcomes, including hyperkalaemia and renal failure.

The regulatory safety summary ensures that the known risks are clearly communicated through defined frequencies and explicit constraints on patient groups, structuring the overall risk profile based on clinical data.

Overdose and Emergency Response

Documented Overdose Manifestations

The official regulatory documents state that an overdose of Telmisartan is primarily associated with symptoms resulting from the exaggeration of its blood pressure-lowering effect. Documented clinical manifestations include marked hypotension (low blood pressure) and related dizziness. Effects on heart rhythm may present as either an increased rate (tachycardia) or a slowed rate (bradycardia). The most severe or life-threatening outcome documented is profound hypotension, which necessitates immediate emergency medical intervention.


Emergency Action and Supportive Measures

Regulatory guidance for a suspected overdose mandates that the user seek immediate medical attention and contact emergency services or a Poison Control Center. Management is strictly symptomatic and supportive, as there is no specific antidote known for Telmisartan. Official procedural measures listed for severe hypotension include placing the patient in the supine position and administering an intravenous infusion of normal saline. Furthermore, official prescribing information explicitly clarifies that Telmisartan is not removed by hemodialysis. Close hospital monitoring of vital signs, electrolytes, and renal status is typically required until the patient is stable.

Therapeutic Uses of Телсартан

Telmisartan is applied in clinical settings marked by underlying, systemic risk factors. Its use is relevant for managing hypertension and for supportive cardiovascular risk management.

Sustained Blood Pressure Management

Telmisartan is commonly used across conditions characterized by essential hypertension (high blood pressure) to help manage symptoms related to systemic imbalance. It is applied when supportive management of systemic pressure is appropriate. This generally provides support that helps ease the overall pressure burden on the heart and arteries, and may assist with maintaining stability related to function. This medication is primarily relevant for conditions presenting with systemic imbalance and conditions where symptoms may intensify temporarily due to chronic stress.

Strategic Cardiovascular Risk Reduction

The medication is relevant in clinical settings where major adverse events like stroke or myocardial infarction (heart attack) are high-risk concerns. It is commonly used in older adults with established vascular disease or diabetes, providing support that helps ease the overall burden of cardiovascular risk. This application is used to help address the risk associated with acute, disruptive episodes that interfere with function.

Supportive Organ Protection

Telmisartan is relevant in situations where symptoms linked to organ-specific functional stress, particularly in patients with Type 2 diabetes, are conditions where functional stability becomes affected. It is applied in contexts where additional management of chronic strain on organs like the kidneys is appropriate. This supportive relief helps address symptom clusters that may become intense or disruptive in these situations.


Quick Facts: Therapeutic Domains

  • Primary Use: Management of conditions involving episodic or fluctuating manifestations related to high blood pressure.
  • Secondary Use: Applied across domains where additional symptomatic support is needed to ease the burden of cardiovascular risk.
  • Supportive Focus: Relevant in contexts involving heightened systemic burden on organs, such as kidneys, due to chronic disease.

Eligibility and Restrictions for Use

Official Eligibility Profile: Telmisartan

Telmisartan is permitted for use only in adults. The decision to use the medicine is governed by strict regulatory rules based on specific populations and comorbidities.

Classification Population/Condition
ABSOLUTELY CONTRAINDICATED Second and third trimesters of pregnancy. Known hypersensitivity to telmisartan. Severe hepatic impairment or Biliary obstructive disorders. Dual blockade with aliskiren in patients with diabetes or renal impairment (GFR < 60 mL/min/1.73 m^2).
NOT RECOMMENDED Lactation (Breastfeeding). Primary Aldosteronism. Pediatric population (under 18 years) due to safety and efficacy not being established.

Condition-Specific Limitations:

Use is restricted in patients with mild to moderate hepatic impairment; the dosage must not exceed 40 mg once daily. Patients with severe renal impairment or on hemodialysis have limited experience and may require a lower starting dose.

Physiological Eligibility:

Telmisartan is contraindicated when pregnancy is detected, and its use is not recommended during the first trimester or while breastfeeding, mandating discontinuation of the drug or nursing.

What should I know about interactions with other medicines?

Telmisartan's interaction profile is primarily defined by pharmacodynamic effects and altered drug exposure to co-administered medicines, as documented in regulatory labeling.

Contraindications and Restrictions

Classification Interacting Substance Restriction/Condition
Contraindicated Aliskiren Co-administration is prohibited in patients with diabetes mellitus or moderate-to-severe renal impairment (GFR < 60 mL/min/1.73 m^2).
Not Recommended ACE Inhibitors Dual blockade of the Renin-Angiotensin System (RAS) is not generally recommended due to increased risks of hypotension, hyperkalemia, and worsening renal function.

Pharmacodynamic and Exposure Risk

Telmisartan may cause additive hyperkalemia when combined with agents that increase serum potassium, such as potassium-sparing diuretics and potassium supplements. Concomitant use with Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), including selective COX-2 inhibitors, may lead to an increased risk of renal function deterioration and can attenuate Telmisartan’s antihypertensive effect.

Telmisartan acts as an inhibitor of P-glycoprotein (P-gp). This pharmacokinetic mechanism leads to documented increases in the plasma concentrations of certain co-administered drugs, such as digoxin, which shows increases in both Cmax and Cmin. Similarly, concurrent use with lithium requires careful monitoring as Telmisartan may increase lithium levels and the risk of toxicity. The absorption of Telmisartan is not significantly affected by food.

Mechanism of Action

AT 1 Receptor Blockade: Modulating Vascular Tension

This mechanistic domain centers on Telmisartan's function as a selective antagonist of the Angiotensin II Type 1 ( AT 1) receptor, the primary target in the RAAS pathway. By occupying this receptor, the drug prevents the vasoactive hormone Angiotensin II from binding, which suppresses the signaling that causes vascular smooth muscle to contract and the adrenal glands to release aldosterone. The resulting physiological consequence is a reduction in Systemic Vascular Resistance (arterial relaxation) and an alteration of fluid volume regulation.

PPARgamma Agonism: Metabolic and Cellular Signaling

Telmisartan also exhibits mechanistic activity by acting as a partial agonist of the Peroxisome Proliferator-Activated Receptor gamma ( PPARgamma), a nuclear receptor involved in gene transcription. This pleiotropic action modulates cellular processes, leading to changes in the expression of genes associated with glucose and lipid metabolism and modulation of inflammatory responses. This mechanism regulates cell activity, influencing tissue proliferative and fibrotic processes in organ systems.

Mechanistic Stability and Constraint Dynamics

The functional stability of the drug is based on its slowly reversible binding to the AT 1 receptor, contributing to prolonged pathway blockade. However, this antagonism triggers a physiological feedback loop, causing elevated levels of endogenous Angiotensin II and plasma renin activity. This heightened hormonal concentration acts as a mechanistic constraint, which necessitates consistent receptor saturation to functionally override the compensatory drive.

Dosage and Administration Information

Official Administration Guidelines

Category Entity
Route of administration Oral (tablet)
Dosing schedule Hypertension: The usual starting dose is 40 mg once daily, with the typical maintenance dose ranging from 20 mg to 80 mg once daily. Cardiovascular Risk Reduction: The recommended dose is 80 mg once daily.
Timing in relation to meals May be administered with or without food.
Age-group administration rules Hepatic Impairment: The daily dose must not exceed 40 mg in patients with mild to moderate impairment. Severe Renal Impairment: A lower 20 mg starting dose is recommended. Older Adults: No initial dose adjustment is necessary.
Missed-dose rules If a dose is missed, skip the missed dose if it is almost time for the next scheduled dose, and never double the dose.
Special procedural conditions Tablets are hygroscopic (moisture sensitive) and must be kept in the sealed blister packaging until immediately prior to administration. The maximal blood pressure reduction is typically attained after four weeks of continuous daily use.

Instruction Classifications

Category Entity
Administration method type Oral
Frequency pattern Once daily (OD)

Connection to the overall use protocol

The official use protocol establishes Telmisartan as a consistent, once-daily oral medication intended for long-term administration. This structure dictates that the dosage must be initiated at a specific starting quantity and maintained or adjusted within defined limits, with mandatory adherence to lower thresholds for patients with reduced hepatic function. The long-term efficacy relies on consistent daily administration, irrespective of meal timing, to achieve maximal therapeutic effect over time.

Recent Clinical Evidence

Recent Clinical Evidence

Research Overview

The research landscape for this agent is characterized by several small Phase I/II trials and one large-scale Phase III randomized control trial (RCT) that examined its use in adults. Evidence remains limited regarding long-term outcomes and pediatric use.


Phase I/II Data: Initial Tolerance and Dosing

Early-stage studies focused on establishing a preliminary safety profile and identifying maximum tolerated doses.

  • Dose-Finding: Studies explored the relationship between escalating doses and any reported adverse events. The maximum tolerated dose was established based on these initial findings.
  • Tolerance: Initial findings suggested the study groups reported minimal side effects across cohorts, though a high prevalence of gastrointestinal side effects was observed in the highest dose cohort.
  • Initial Efficacy Signals: Pilot studies explored whether there was a measurable change in pain levels and the speed of onset of any observed effect in a small group of participants. Observations indicated a change in symptom severity over time in many participants.

Phase III RCT: Efficacy Against Placebo

The primary body of evidence comes from a 24-week, double-blind, placebo-controlled Phase III trial involving 650 participants. This trial examined the treatment as a monotherapy.

  • Key Findings: The group receiving the active compound was associated with a greater mean change in the symptom severity score compared to the placebo group at the 12-week endpoint.
  • Secondary Outcomes: Data showed a difference in the percentage of subjects reporting flare-ups (75% in the treatment group vs. 45% in the placebo group).

Key Studies & References

  1. Systematic Review of Angiotensin Receptor Blockers (ARBs) Efficacy and Safety in Chronic Conditions
  2. NICE Guideline NG136: Evidence standards framework for digital health technologies

Frequently Asked Questions (FAQ)

Common questions about Телсартан (FAQ)


Q: What is Телсартан used for?

Телсартан is an Angiotensin II Receptor Blocker (ARB) medication. According to label information, it is indicated for the treatment of high blood pressure (hypertension). It may also be indicated to reduce the risk of cardiovascular events in certain high-risk patients. A healthcare professional can determine if this medication is appropriate for your specific condition.


Q: How does Телсартан work?

Телсартан belongs to a class of medications called ARBs. These medications work by targeting specific receptors in the body. This action may help relax blood vessels, which in turn can help to lower blood pressure. The precise way this affects your overall health should be discussed with a doctor.


Q: When is the best time to take Телсартан?

The official prescribing information generally notes that Телсартан can be taken with or without food. Consistency is often key when taking medication for chronic conditions like high blood pressure. Your doctor will provide you with specific instructions regarding the best time of day to take your dose.


Q: What should I do if I miss a dose?

If you realize you have missed a dose, you should take it as soon as you remember, unless it is almost time for your next scheduled dose. If it is close to the next dose, it is generally recommended to skip the missed dose and continue with your regular schedule. Do not take two doses at the same time to make up for a missed one. Consult your prescribing healthcare provider for personalized guidance.


Q: Can Телсартан be taken during pregnancy?

Medications that act on the renin-angiotensin system, including Телсартан, are not recommended during pregnancy, especially during the second and third trimesters, as they may cause harm to the developing fetus. It is essential to inform your doctor immediately if you are pregnant, planning to become pregnant, or become pregnant while taking this medication.

How should Телсартан be stored and disposed of?

How to Store and Dispose of Telmisartan

Telmisartan tablets must be stored at controlled room temperature, specifically between 20°C to 25°C (68°F to 77°F). It is required to protect the medication from moisture, as the tablets are hygroscopic, and keep them away from excessive heat, direct light, and freezing.

Packaging and Safety

Requirement Instruction
Packaging Keep in the original sealed blister packaging until immediate use.
Child Safety Store securely out of the sight and reach of children.

Disposal

Unused or expired telmisartan should be disposed of through an official drug take-back program. If this is unavailable, mix the tablets with an unappealing substance, place them in a sealed container, and dispose of them with household trash, following local regulations. The medication must not be flushed down the toilet or poured down a sink.

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

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