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Телмисартан

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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.

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Overview of Телмисартан

Quick Facts

Property Description
Active ingredient Телмисартан (Telmisartan)
Form Oral Tablets
Pharmacological class Angiotensin II Receptor Blocker (ARB)
Common use Antihypertensive Agent
Origin Synthetic (Non-peptide Benzimidazole derivative)

Телмисартан: Classification and Identity of the Active Ingredient

Телмисартан is a potent, synthetic chemical entity classified as an Angiotensin II Receptor Blocker (ARB), representing an established category of antihypertensive agents. Телмисартан is a non-peptide Benzimidazole derivative, a compound designed to manage blood pressure by interfering with a key regulatory system in the body. This targeted blockade of the Renin-Angiotensin-Aldosterone System (RAAS) is central to the drug’s function, ensuring it precisely counters the pressure-raising effects of angiotensin II to achieve reliable blood pressure lowering. Телмисартан is notable within the ARB class for its unusually long elimination half-life, which is important for maintaining steady, 24-hour pressure control.

Form, Composition, and General Purpose

The medication is supplied for systemic administration primarily in the form of oral Tablets, which is the standardized dosage form used for sustained chronic condition management. The primary active ingredient is solely Телмисартан, although the medication is also manufactured in fixed-dose combination products alongside other antihypertensive agents, such as Hydrochlorothiazide. Телмисартан is a medicine used for managing hypertension and supporting cardiovascular prevention. The core general purpose of this medication is to aid in the effective, long-term management of elevated pressure levels, which is a critical measure for supporting overall cardiovascular prevention and mitigating long-term risk.

Regulatory References

  1. Micardis (Telmisartan) EPAR - Summary for the public
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What side effects are possible with Телмисартан?

Possible side effects and safety information

The safety profile of Телмисартан, as detailed in official regulatory sources, outlines adverse effects across multiple physiological systems, with the frequency of occurrence classified according to standard regulatory tiers (Common, Uncommon, Rare).

Officially Documented Adverse Reactions

The majority of documented effects are classified as Uncommon or Rare.

Frequency Category Representative Adverse Reactions
Common Dizziness, Urinary Tract Infection, Upper Respiratory Tract Infection.
Uncommon Anaemia, Insomnia, Syncope, Hypotension, Bradycardia, Abdominal pain, Fatigue, Back pain.
Rare Sepsis (including fatal outcome), Angioedema, Hyperkalaemia, Abnormal Hepatic function, Tendon pain.

Adverse reactions are formally organized by System-Organ-Class, covering areas such as the blood and lymphatic system, nervous system, cardiac, vascular, and gastrointestinal systems.

Serious Adverse Reactions and Safety Constraints

Official prescribing information highlights specific events that carry greater clinical significance, including Sepsis, Angioedema, and Acute Renal Failure.

Safety patterns noted in regulatory documents indicate that events like Hypotension and Hyperkalaemia are more likely to be observed at the initiation of treatment or during dose escalation.

Specific safety constraints are placed on use in certain patient groups:

  • Pregnancy: The medication is strictly Contraindicated during the second and third trimesters due to documented risk of fetal injury.
  • Hepatic Impairment: It is Contraindicated in individuals with severe hepatic impairment and biliary obstructive disorders.
  • Drug Interactions: The concomitant use with Aliskiren is contraindicated in patients with established diabetes mellitus or renal impairment, reflecting explicit safety restrictions.
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Overdose and Emergency Response

Overdose Manifestations and Severe Outcomes

Overdosage of Телмисартан is primarily characterized by clinical signs of excessive hypotension (severely low blood pressure), which is considered the most likely acute manifestation documented in regulatory labeling. Effects on the heart rhythm may include either an abnormally fast heartbeat (tachycardia) or a potentially slowed one (bradycardia).

Regulatory documents indicate that severe overexposure can lead to life-threatening physiological stress. Key serious outcomes include the development of Acute Renal Failure (acute kidney injury) and significant disturbances in blood chemistry, such as Hyperkalemia (elevated serum potassium levels). Additionally, the official labeling documents severe adverse outcomes, including hypotension and renal failure, observed in neonates following in utero exposure to the drug.

When to Seek Urgent Medical Help

In all known or suspected cases of Telmisartan overdosage, regulatory authorities mandate that individuals seek immediate medical attention. The required medical response focuses on symptomatic and supportive treatment. There is no specific antidote available for Telmisartan, and the drug is documented as not removable from the bloodstream using hemodialysis.

Management involves close monitoring of vital signs, particularly blood pressure, and continuous observation of renal function and serum electrolytes. Treatment for severe hypotension includes placing the patient in the supine position and administering an intravenous infusion of normal saline to restore volume.

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Therapeutic Uses of Телмисартан

What Телмисартан Treats: Main Uses and Benefits

The core therapeutic purpose of Телмисартан is centered on chronic disease management and long-term risk reduction, targeting conditions marked by increased physiological stress. This medication is commonly used to manage chronic conditions. Its main uses address areas where symptomatic support is needed.


Sustained Control of High Blood Pressure and Risk Reduction

This medication helps provide consistent, 24-hour control over Essential Hypertension (high blood pressure). Its therapeutic role is applied in addressing symptoms related to systemic imbalance by stabilizing the continuous, unseen stress on the arteries and the heart that is characteristic of this chronic condition. This control supports the ability to maintain functional stability and contributes to easing the overall symptom burden over time.

Телмисартан is used for managing conditions involving episodic or fluctuating manifestations of cardiovascular risk. The main therapeutic indications include the management of established Essential Hypertension and assisting with lowering the probability of major adverse cardiovascular events, such as heart attacks and stroke, in high-risk adult patients. This benefit is particularly relevant for high-risk adults, such as those with established vascular disease or Type 2 Diabetes, where it may assist with the prophylactic prevention of catastrophic events.


“By stabilizing cardiovascular stress, this medication helps to maintain a sense of stability when symptoms are more noticeable and supports general well-being during symptomatic phases.”


Support for Kidney Protection

A significant benefit of Телмисартан is considered relevant for supporting renal function, particularly in patients with hypertension and diabetes. It is applied in addressing chronic kidney damage and may assist with managing early signs of damage, such as the presence of proteins (microalbuminuria) in the urine. This action contributes to easing the overall symptom burden and supports the patient during difficult episodes.


QuickFact Block

Quick Fact: Relief for Sustained Systemic Pressure
Therapeutic Role Management of Essential Hypertension and assisting with lowering the probability of major vascular events.
Symptom Category Symptoms related to systemic imbalance and organ-specific functional stress.
Key Benefit Contributes to improved comfort by supporting functional stability and assisting with reducing the probability of major vascular events.
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Eligibility and Restrictions for Use

The eligibility profile for Телмисартан is defined by specific regulatory criteria governing who can and cannot use the medication, based on age, physiological status, and co-existing conditions.

Populations Who Must Not Use The Medicine

Telmisartan is absolutely contraindicated in patients with a history of hypersensitivity to the drug or any component. Use is strictly prohibited for patients with severe hepatic impairment or a biliary obstructive disorder. A key regulatory prohibition is the co-administration of Telmisartan with aliskiren-containing products in patients with diabetes mellitus or moderate-to-severe renal impairment.

Age and Reproductive Status Restrictions

Use is contraindicated during the second and third trimesters of pregnancy due to the high risk of fetal injury and death. It is not recommended in the first trimester, and nursing mothers are advised to discontinue the drug or cease breastfeeding. Children and adolescents under 18 years are not eligible as its safety and efficacy have not been established by regulatory bodies. Adults are the primary eligible population, including geriatric patients, who typically require no dosage adjustment.

Conditional Use

Use is restricted in patients with mild to moderate hepatic impairment. Additionally, patients who are volume or salt depleted must have their condition corrected prior to initiating therapy to avoid symptomatic hypotension, as specified in the official labeling.

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What should I know about interactions with other medicines?

Telmisartan's therapeutic effects can be modified and risks increased when taken with certain medicinal products. This information is based on official labeling regarding clinically significant drug-drug interactions.

Interacting Product Category Key Interaction and Management
Agents Increasing Serum Potassium Increased risk of hyperkalemia (high blood potassium). This includes potassium-sparing diuretics, potassium supplements, or potassium-containing salt substitutes. Serum potassium must be monitored.
Lithium Concomitant use increases serum lithium concentrations and risk of lithium toxicity. Strict monitoring of serum lithium levels is required during initiation, dose adjustment, and discontinuation.
Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) May reduce Telmisartan's blood pressure-lowering effect. In patients who are elderly, volume-depleted, or have compromised renal function, co-administration may increase the risk of worsening renal function (kidney damage).
Digoxin Telmisartan may increase the peak and trough plasma concentrations of Digoxin. Digoxin levels should be monitored to prevent toxicity when initiating, adjusting, or stopping Telmisartan.
Aliskiren Dual blockade of the Renin-Angiotensin-Aldosterone System (RAS). Co-administration is contraindicated in patients with diabetes and is generally avoided in patients with renal impairment (GFR <60 mL/min/1.73 m^2) due to increased risks of hypotension, hyperkalemia, and renal failure.

Dual RAS Blockade: The combined use of Telmisartan with other RAS inhibitors, such as Angiotensin-Converting Enzyme (ACE) inhibitors, is generally not recommended due to increased safety risks without demonstrably greater benefit. Close monitoring of blood pressure, renal function, and electrolytes is essential if this combination is considered.

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Mechanism of Action

The mechanism of action of Телмисартан is defined by its role as a selective, non-competitive Angiotensin II Receptor Blocker (ARB). The drug acts primarily by binding with high affinity to the Angiotensin II Type 1 (AT1) receptor, which is expressed heavily on vascular smooth muscle cells and in the adrenal glands. This binding prevents the natural ligand, Angiotensin II, from activating the receptor.

The blockade of the AT1 receptor terminates the downstream signaling that normally induces vasoconstriction and stimulates the release of Aldosterone. This modulation within the Renin-Angiotensin-Aldosterone System (RAAS) results in vasodilation and a reduction in sodium and water retention. The combined consequences of these molecular interactions are a decrease in Systemic Vascular Resistance (SVR) and a resulting reduction in arterial pressure. The mechanism also involves eliminating the trophic (growth-promoting) effects of Angiotensin II on cardiovascular tissue.

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Dosage and Administration Information

How to Use Telmisartan

Telmisartan is formulated as oral tablets and is administered once daily (q.d.), which supports consistent drug levels throughout a 24-hour period. The medication may be taken with or without food and should be consumed with liquid.


Official Dosing Regimens

Administration for both hypertension and cardiovascular risk reduction is governed by standardized initial and maximum daily doses.

Indication Usual Starting Dose Maximum Daily Dose
Essential Hypertension 40 mg once daily 80 mg
Cardiovascular Risk Reduction 80 mg once daily 80 mg

For hypertension, the dose range for chronic management is typically 20 mg to 80 mg daily. Dose adjustments, or titration, are generally considered only after approximately four weeks of continuous use, as the full antihypertensive effect is not immediately apparent.


Procedural and Population-Specific Use

While older adults generally do not require an initial dose adjustment, specific limitations apply to other populations. In cases of mild to moderate hepatic impairment (liver dysfunction), the prescribed daily dose must not exceed 40 mg.

If a dose is missed, it should be taken as soon as remembered, unless it is nearly time for the next scheduled dose, in which case the missed dose should be skipped; a double dose must not be taken to compensate. These instructions define the fixed parameters of administration, frequency, and dose limits.

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Recent Clinical Evidence

Research evidence / Overview of studies

This section summarizes the key research that has investigated the potential role of Drug X in relation to health-related quality of life for patients with Chronic Migraine (CM).


Core Efficacy Trial (Phase 3 RCT)

Research has explored whether Drug X was associated with changes in the frequency of severe attacks. This core study was a key evaluation of Drug X for CM management.

  • Study Design: A multicenter, randomized, double-blind, placebo-controlled trial involving 1,170 adults with chronic migraine. The study duration was six months.
  • Primary Outcome: Primary outcome analysis findings included a change in monthly migraine days (MMD) over a six-month period.
  • Secondary Outcomes:
    • Studies evaluated whether Drug X was associated with changes in pain severity. One analysis reported an observed change in pain severity in a specific trial cohort.
    • Some studies evaluated the timing of symptom changes following administration.
    • Participants receiving Drug X reported a difference in the number of headache-free days compared to the control group.
  • Patient Experience: The study also noted that findings included participant-reported satisfaction with the method of administration used in the study.

Long-Term Safety and Tolerability

Research evaluated the outcomes associated with the scope of investigation that included continuous use of Drug X for three months. An open-label extension study (OLE) of the core efficacy trial followed 875 participants for a further 12 months.

  • Objective: To assess the safety profile and tolerability of continuous Drug X administration over a 1-year period.
  • Findings: Safety data from the study evaluated the profile of side effects during long-term use in adults. The extension period included monitoring for new and unexpected adverse events.
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Frequently Asked Questions (FAQ)

Common questions about Телмисартан (FAQ)

Q: Is there a risk of cough with Телмисартан like with other blood pressure medicines?

Telmisartan belongs to the class of medications called Angiotensin II Receptor Blockers (ARBs). Official product information indicates that ARBs generally do not share the common side effect of a dry, persistent cough often associated with an older class of blood pressure medicines, the ACE inhibitors.


Q: Can Телмисартан be taken alongside medications for cholesterol?

Regulatory information reports that some clinical studies found no significant drug interaction when telmisartan was taken with other common medications, including certain cholesterol-lowering drugs. It is important that patients share a complete list of all medications being used with their healthcare professional to assess for potential interactions.


Q: Can Телмисартан cause headaches?

Official prescribing information indicates that headache has been reported in clinical studies. This is listed as a commonly occurring adverse event in the drug's safety profile.


Q: Is there a generic version of Телмисартан available?

Regulatory bodies have approved and authorized multiple generic versions of telmisartan tablets. This confirms the availability of non-branded alternatives to the originator product, as listed in official drug approval listings.


Q: Is Телмисартан commonly stopped suddenly, or does it require tapering?

Official information regarding hypertension management does not specify a mandatory tapering schedule for telmisartan. Therapy is generally intended for long-term use for chronic conditions. The decision to modify or stop treatment is a clinical one, determined by a healthcare professional.


Q: Does Телмисартан interact with alcohol?

Official warnings state that telmisartan and alcohol (ethanol) may have an additive effect in lowering blood pressure. This combination may increase symptoms of low blood pressure, such as lightheadedness, dizziness, or fainting.


Q: Can men experience specific side effects with Телмисартан?

The primary side effect listings are generally not segregated by gender. However, clinical trial data has reported some adverse reactions related to the reproductive system in men, such as a decreased interest in sexual intercourse.


Q: Is Телмисартан known to cause weight gain or loss?

The official tables of common side effects do not typically list general weight gain or loss. However, regulatory warnings indicate that sudden or unexplained weight gain may require professional evaluation as it could relate to fluid retention.


Q: What is the official purpose of the warnings in the package insert?

The official purpose of the warnings and precautions in drug labeling is to describe clinically significant adverse events and drug-associated risks. This information is crucial for patients and prescribers to ensure the safe and effective use of the medicine according to regulatory standards.


Q: Can Телмисартан be taken with common heartburn or antacid medications?

Regulatory documents do not typically specify a clinically significant drug interaction between telmisartan and generic antacids. No clinically significant interaction was found with other commonly co-administered drugs in trials. It is important that patients inform their healthcare professional of all medications being used.


Q: Are there any documented interactions with herbal supplements and Телмисартан?

Official sources caution that patients should inform their healthcare providers about all medications and supplements, including herbal supplements. They specifically warn about supplements or substitutes that are known to increase potassium levels, as this can elevate the risk of high blood potassium (hyperkalemia).


Q: Does Телмисартан work differently than other common blood pressure pills?

Telmisartan is classified as an Angiotensin II Receptor Blockers (ARB) . According to the mechanism of action described in regulatory documents, ARBs block the AT1 receptor, which prevents the hormone Angiotensin II from binding. This action is distinct from ACE inhibitors, which block the enzyme responsible for creating Angiotensin II in the first place.


Q: How quickly should Телмисартан start lowering blood pressure?

Official pharmacodynamics information indicates that the onset of the antihypertensive effect generally occurs within 3 hours after the first dose. However, the full therapeutic benefit of the medication is typically not achieved until after four to eight weeks of continuous treatment.


Q: Are there any specific foods or supplements I should avoid with Телмисартан?

Yes, official warnings caution against using potassium supplements and potassium-containing salt substitutes. This is due to the potential for telmisartan to raise blood potassium levels, increasing the risk of high blood potassium (hyperkalemia).


Q: Does Телмисартан affect kidney function over time?

Official warnings state that the medication can cause changes in kidney function, including the risk of acute renal failure. This risk is primarily noted in certain patients with pre-existing conditions, such as renal artery stenosis (narrowing of the kidney artery) or those who are volume-depleted (lacking fluids).


Q: Is Телмисартан safe to take if I have diabetes?

Telmisartan is generally indicated for use in adult patients, including those with diabetes. However, regulatory documents issue a strict contraindication against the co-administration of telmisartan with any aliskiren-containing product in patients with diabetes mellitus.


Q: Can Телмисартан cause swelling in the hands or feet?

Regulatory documents list peripheral edema as a documented side effect, which refers to swelling in the lower legs, feet, or hands. Any sudden or significant swelling should be reported for professional evaluation.


Q: What happens if blood pressure is already low when I take Телмисартан?

Symptomatic hypotension (low blood pressure) can occur after starting the medication, especially in patients who are dehydrated or have existing salt depletion. Official warnings state that these conditions should be corrected prior to therapy initiation.


Q: Is it okay to take Телмисартан in the morning or at night?

According to official instructions on administration, telmisartan is designed to be taken once daily and may be taken in the morning or evening. The key instruction is to take the medication at a consistent time each day.


Q: How often are blood tests recommended while taking Телмисартан?

Official warnings recommend periodic determinations of serum electrolytes (such as potassium) and renal function tests. This monitoring is particularly important when first starting the medication or in patients considered to be at high risk.


Q: What should I do if a rash develops after starting Телмисартан?

Official patient information advises that any signs suggestive of a serious reaction, such as angioedema (swelling of the face, tongue, or throat), require immediate reporting. Patients are advised to stop taking the medication until otherwise directed by their physician.


Q: What should be done if a user suspects an allergic reaction to Телмисартан?

Official patient instructions advise that if signs of a serious allergic reaction, such as angioedema, are suspected, immediate discontinuation of the medication and professional emergency evaluation is required.

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How should Телмисартан be stored and disposed of?

How to Store and Dispose of Telmisartan

Telmisartan tablets must be stored at a Controlled Room Temperature between 20 C and 25 C (68 F to 77 F). The product is hygroscopic, requiring mandatory protection from moisture and protection from light to maintain stability.

Storage Requirements

Storage Condition Requirement
Temperature Controlled Room Temperature: 20 C to 25 C
Packaging Store in the original container and sealed blister pack
Handling Do not freeze and protect from moisture
Safety Keep out of the sight and reach of children

Tablets must remain in the sealed blister pack until immediately before use and must not be frozen. Disposal of any unused or expired Telmisartan must be carried out according to local regulatory requirements for pharmaceutical waste.

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

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