Concor plus

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Medically reviewed

Rosario Oropesa

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 Concor plus

Property Description
Active Ingredients Bisoprolol fumarate, Hydrochlorothiazide
Form Film-coated tablets
Pharmacological Class Antihypertensive, Fixed-dose combination
General Purpose Management of high blood pressure (Hypertension)
Origin Synthetic

What Type of Medicine is Concor plus?

Concor plus is a cardiovascular agent classified as an antihypertensive fixed-dose combination product, prescribed orally for the management of established high blood pressure (hypertension) in adults. As a prescription-only medicine, it combines two distinct, synthetically derived active components to achieve a comprehensive therapeutic effect. The pairing of a beta-blocker with a diuretic forms the basis of this medication, representing a recognized strategy for lowering blood pressure.


This drug entity is structurally and functionally different from a single-agent treatment, or monotherapy. While Concor plus is a widely recognized brand name, other preparations with the same active ingredients, such as Ziak and its generic equivalents, may be available. Its primary role is to establish and maintain sustained control over blood pressure, supporting the overall function of the cardiovascular system, often in individuals whose blood pressure is not adequately controlled by a single agent.

Bisoprolol and Hydrochlorothiazide: The Composition

The medication is supplied as a film-coated tablet and contains the two active ingredients: Bisoprolol fumarate and Hydrochlorothiazide (HCTZ). This arrangement means both components, the beta1-selective adrenergic receptor antagonist and the thiazide diuretic, are administered simultaneously. The use of Bisoprolol in combination with diuretics is characterized by an established role in clinical practice, where these components are utilized together for their combined effects.


The inclusion of these two specific agents in a fixed format ensures that the patient receives a precise, pre-determined ratio of the beta-blocker and the diuretic with every dose. This fixed-dose combination is a clinically recognized approach to improve the efficiency and consistency of the therapeutic regimen compared to taking two separate tablets.

The General Purpose of This Dual-Action Therapy

The general purpose of the Concor plus combination is to utilize synergistic blood pressure lowering, which means the two ingredients work together to produce a greater reduction in pressure than either could achieve alone. This dual-action therapy provides a strategy for the comprehensive management of high blood pressure in adult patients.


This approach addresses two major contributing factors to hypertension: Bisoprolol works to reduce the speed and force of heart contractions, and Hydrochlorothiazide increases the excretion of excess salt and water, decreasing the volume of fluid within the circulatory system. By modulating both the heart's function and the body's fluid balance, Concor plus relieves chronic strain on the patient's entire vascular network.

Regulatory References

  1. FDA Label/DailyMed (Bisoprolol/HCTZ)
  2. NICE Guideline: Hypertension Treatment Steps

What side effects are possible with Concor plus?

Possible side effects and safety information

The safety profile for the fixed-dose combination of Bisoprolol and Hydrochlorothiazide is officially classified by regulatory authorities based on the frequency and the physiological systems affected. These classifications communicate the known risks associated with the medicine.

Frequency-Classified Adverse Reactions

Adverse reactions are formally categorized based on incidence in clinical trials and post-marketing surveillance:

  • Common Reactions (may affect up to 1 in 10 people): Reactions frequently documented include dizziness, headache, fatigue, nausea, vomiting, diarrhea, constipation, and a feeling of coldness or numbness in the extremities. Changes in laboratory values, such as low serum potassium (hypokalemia), are also common.
  • Uncommon Reactions: These include sleep disorders, depression, muscle weakness, muscle cramps, and a slow heart rate (bradycardia).
  • Rare Reactions: Effects such as elevated liver enzymes, hearing disorders (tinnitus), and erectile dysfunction are documented as rare.

Serious Adverse Reactions and Restrictions

The official labeling identifies several serious adverse reactions and strict safety constraints. The medicine is contraindicated in patients with uncontrolled heart failure, cardiogenic shock, marked sinus bradycardia, severe asthma, and severe hepatic or renal impairment. Due to the Hydrochlorothiazide component, there is a risk of developing severe electrolyte disturbances, which can be clinically serious. In rare cases, the diuretic component has been associated with the risk of acute angle-closure glaucoma. Furthermore, long-term use of Hydrochlorothiazide is associated with an increased risk of Non-Melanoma Skin Cancer (NMSC).

Population-Specific and Time-Related Safety Notes

Safety documents note that dizziness and headache may be experienced more frequently at the start of treatment or following a change in dosage. Caution is necessary for patients with pre-existing hepatic or renal impairment. The safety and efficacy of this combination product have not been established in the pediatric population.

Overdose and Emergency Response

Overdose may present with severe cardiovascular and metabolic manifestations that define a life-threatening medical emergency. Documented overdose presentations include profound bradycardia (abnormally slow heart rate), severe hypotension (abnormally low blood pressure), and critical electrolyte imbalance, such as hypokalemia or hyponatremia. Additional clinical signs listed in regulatory documents are confusion, dizziness, fainting (syncope), and hypoglycemia (low blood sugar).

Life-threatening outcomes documented in official profiles include shock, aggravation of congestive heart failure, convulsions, and coma. Children are specifically noted to be susceptible to severe hypoglycemia in beta-blocker overdose, which may lead to central nervous system symptoms.

Due to the potential for these severe and complicated manifestations, official regulatory guidance mandates that emergency medical attention must be sought immediately for any suspected overdose. This is consistent with the need to utilize symptomatic and supportive treatment, including the correction of fluid imbalance and the administration of activated charcoal. Management procedures require continuous hospital monitoring with electrocardiogram (ECG) and blood tests, as no specific antidote is known.

Therapeutic Uses of Concor plus

Quick Facts

  • Main Use: Management of elevated blood pressure (hypertension).
  • Benefit: May assist in reducing the risk of major cardiovascular events.
  • Note: Typically initiated when a single agent is insufficient for blood pressure control.

Concor Plus is a medication prescribed to support the management of high blood pressure, a clinical condition often referred to as hypertension. Its therapeutic application focuses on helping to reduce sustained high arterial pressure in patients whose condition is not adequately addressed by monotherapy (treatment with a single agent).

Effective management of high blood pressure is considered a significant factor in promoting cardiovascular health. By helping to maintain blood pressure within an appropriate range, this medication may contribute to a reduced risk of experiencing cardiovascular events, such as a heart attack or stroke.

Concor Plus is an approved option for the treatment of hypertension.

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Concor plus — Official Regulatory Information

Eligibility Scope

Populations for whom use is allowed (as stated in label): Adults for essential hypertension, including those whose blood pressure is not adequately controlled on monotherapy. Use is generally acceptable in older adults, and in patients with mild-to-moderate renal or hepatic impairment. Populations for whom use is not recommended (if applicable): The medicine is not recommended for the pediatric population (under 18 years) as safety and efficacy have not been established. It is also not recommended during pregnancy and lactation. Populations for whom use is contraindicated: Contraindications include hypersensitivity to the components or sulphonamides, cardiogenic shock, acute heart failure or decompensation, severe bradycardia, second or third-degree AV block (without a pacemaker), anuria, sick sinus syndrome, and metabolic acidosis.

Age-related Eligibility Rules

Pediatric Use: Not established; Not Recommended in children and adolescents. Geriatric Use: Acceptable, but caution is advised due to potential increased sensitivity.

Condition-specific Eligibility Rules

Severe Impairment: Use is restricted and may be contraindicated in severe renal impairment (Creatinine clearance < 30 mL/min) and requires caution in severe hepatic impairment. Comorbidities: Caution is required for patients with diabetes mellitus (due to masking hypoglycemia symptoms), strict fasting, bronchial asthma, and a history of psoriasis.

Pregnancy and Lactation Eligibility Status (if explicitly documented)

Both pregnancy and lactation are classified as states where use is not recommended.

Eligibility-related Restrictions

Restrictions apply based on the severity of organ function (renal/hepatic) and specific cardiovascular states (e.g., first-degree AV block).

Eligibility classifications (high-level)

Eligibility severity classification (as defined in official documents): Contraindicated, Not Recommended, Use with Caution. Regulatory basis (EMA / FDA / etc.): Official government-approved product labeling. Eligibility-context constraints (as defined in official documents): Comorbidity-based, Organ function-based, Developmental status-based.

Resulting eligibility structure

Official eligibility statements:

  • The medicine is contraindicated in patients with conditions such as cardiogenic shock and severe heart block.
  • Use is not recommended in the pediatric population as safety and efficacy have not been established.
  • Severe organ impairment and specific metabolic conditions impose restrictions on use.

Connection to the overall eligibility profile (2–4 sentences): The official regulatory profile defines eligibility primarily through a definitive list of Absolute Contraindications based on pre-existing cardiovascular and severe allergic conditions. Eligibility is further structured by Age-Related and Organ Function criteria, establishing that while the drug is appropriate for adults, it is not recommended for the pediatric population and those with certain severe hepatic or renal dysfunctions. These classifications constitute the non-advisory, label-based framework for patient inclusion and exclusion.

What should I know about interactions with other medicines?

The regulatory interaction profile for Concor plus (Bisoprolol/Hydrochlorothiazide) strictly documents combinations that are formally prohibited and others that modify the drug's effect or concentration. The most significant constraint is the formal prohibition of co-administration with certain agents. Intravenous forms of Calcium antagonists of the Verapamil and Diltiazem types are contraindicated due to the high risk of severe hypotension and/or atrioventricular block. Additionally, Monoamine Oxidase (MAO) Inhibitors (except MAO-B inhibitors) are also contraindicated.

Pharmacokinetic interactions include substances that alter drug exposure. For example, the Hydrochlorothiazide component significantly reduces the renal clearance of Lithium, which increases the risk of toxicity. The absorption of Hydrochlorothiazide is also affected by Cholestyramine or Colestipol resins, requiring mandated separation: Hydrochlorothiazide must be administered at least 4 hours before or 4–6 hours after these resins.

Pharmacodynamic interactions can cause additive effects, such as enhanced blood pressure lowering when co-administered with Alcohol (Ethanol) or other antihypertensive agents. Conversely, Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) may officially decrease the desired blood pressure-lowering effect. Regulatory documents also note that the Bisoprolol component may increase the severity of allergic reactions and can reduce the effectiveness of epinephrine treatment in patients undergoing desensitization therapy. This structured classification helps define official interaction-related constraints documented in regulatory labeling.

Mechanism of Action

The Bisoprolol component of the combination acts as a beta1-adrenergic receptor antagonist. This action selectively inhibits the binding of catecholamines to the beta1 receptors located primarily in the heart, resulting in a decrease in heart rate and myocardial contractility. This modification of cardiac function lowers cardiac output. The Hydrochlorothiazide component is a thiazide diuretic that acts by inhibiting the Na^+/ Cl^- cotransporter in the luminal membrane of the distal convoluted tubule of the nephron . This inhibition decreases the reabsorption of sodium and chloride ions, leading to increased urinary excretion of water and electrolytes, and ultimately a reduction in intravascular volume. The combined effects of reduced cardiac output and lowered intravascular volume contribute to the modulation of systemic hemodynamics, resulting in a reduction of blood pressure.

Dosage and Administration Information

How Concor plus is Used: Official Administration Guidelines

Concor plus (a fixed-dose combination of Bisoprolol and Hydrochlorothiazide) is administered as an oral film-coated tablet for the management of high blood pressure. The primary administration pattern is designed for consistency and gradual adjustment, following established guidelines.


Standard Dosage and Frequency

The medicine is prescribed for once-daily use. The tablet is typically recommended to be taken in the morning and may be administered with or without food.

Treatment is usually initiated with the lowest available fixed-dose strength (2.5 mg Bisoprolol/ 6.25 mg HCTZ). Subsequent dosage adjustments, or titration, are performed gradually at intervals of no less than 14 days (two weeks) to properly assess the therapeutic response. The tablet is intended to be swallowed whole with liquid and should not be crushed or chewed, aligning with the requirements of the dosage form.


Usage Patterns and Special Conditions

Concor plus is intended for long-term management of chronic hypertension. A critical procedural instruction is the Non-Abrupt Discontinuation Principle: therapy should not be stopped suddenly. Discontinuation, when planned, requires a gradual reduction (tapering) of the dose over a period to mitigate potential risks. If a dose is missed, the general instruction is to continue with the next scheduled dose without taking a double dose to compensate.

Age and Health Condition Rules:

Population Group Standard Labeling Instruction
Pediatric (Under 18) Use is not recommended due to lack of established safety and efficacy data.
Renal Impairment Use is contraindicated in severe cases (e.g., anuria or creatinine clearance <10 mL/min).
Older Adults No routine starting dose adjustment is necessary, but caution is advised during dose increases.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Concor plus

The clinical evaluation of the Bisoprolol/Hydrochlorothiazide combination is based on official research evidence, including findings from randomized controlled trials (RCTs) and systematic reviews. This overview describes the research framework without offering medical advice or treatment instructions.

Evidence for Use in Established High Blood Pressure (Hypertension)

Research examining the use of this combination in the context of established high blood pressure in adults primarily utilized randomized controlled trials (RCTs) and meta-analyses. These research scenarios explored the drug's use in conditions where symptoms may vary in intensity, particularly in adults with Stage I and Stage II Hypertension. Studies were conducted specifically in populations where blood pressure was not adequately managed by a single-agent treatment.

The main focus of these studies was monitoring physiological strain or stress by measuring how blood pressure evolved in the observed populations. Research highlighted measured changes in sitting systolic and diastolic blood pressure. Furthermore, studies monitored the proportion of patients who achieved specific blood pressure targets defined by the researchers. The findings describe patterns observed over defined time intervals, with many of the core trials using short-to-intermediate follow-up durations, typically ranging from 6 to 12 weeks.

Study Focus: Blood Pressure Reduction and Achievement of Targets

Studies were conducted to explore changes in outcomes related to systemic or functional imbalance. Research examined the effects of the dual-action therapy, where the combination of the two agents was evaluated in comparison to a placebo or to one of the individual components alone. Data show patterns related to the combined influence of the beta-blocker and the diuretic on blood pressure levels. The evidence contributes to understanding symptom patterns by providing context for how blood pressure changes following the initiation of the combination.

Evidence in Special Populations

Research examined subjects in the elderly population with isolated systolic hypertension. Limited information is available for children and adolescents with high blood pressure. Studies in this younger population were randomized and placebo-controlled. Data show patterns related to many subjects in the trial not reaching target blood pressure levels defined by the researchers. For this reason, data for this group remain insufficient, and certainty remains low regarding its role compared to other therapeutic options.

What Research Gaps and Uncertainties Remain

Research highlights areas where more information is needed to fully characterize the combination's role. One key limitation is that comparative evidence is lacking for long-term outcomes, such as major cardiovascular event change, when comparing this specific fixed-dose combination directly against other combination treatments. Results apply only to the populations studied, and data for certain groups, such as those with advanced comorbidities, remain insufficient. Evidence is limited regarding the certainty of long-term maintenance of the blood pressure response across all subgroups.

Key Studies & References

  1. Label: Bisoprolol fumarate and hydrochlorothiazide tablets, USP (Authoritative US FDA Regulatory Information)
  2. Bisoprolol in Hypertension: Effect on Concomitant Elevated Heart Rate (b.p.m Study) (Used for general adult hypertension trial context)

Frequently Asked Questions (FAQ)

Common questions about Concor plus (FAQ)

Q: What is the main reason doctors prescribe Concor plus?

According to official product information, this medicine is typically prescribed for adult patients who have high blood pressure (hypertension) that is not adequately controlled after treatment with a single blood pressure-lowering medicine (known as monotherapy). The combination is intended to modulate blood pressure using two different mechanisms.

Q: How is Concor plus different from regular Concor?

Concor plus is a fixed-dose combination that contains two active ingredients: Bisoprolol and a diuretic called Hydrochlorothiazide (HCTZ). In contrast, regular Concor (or other brand names) typically contains the single active ingredient, Bisoprolol, alone.

Q: Why would a doctor combine bisoprolol and hydrochlorothiazide in one pill?

The components are combined in a single pill based on the principle of achieving an additive blood pressure-lowering effect, meaning the two ingredients work together. This approach also potentially helps improve patient adherence (consistency) to the prescribed treatment regimen.

Q: Is the bisoprolol component or the hydrochlorothiazide component responsible for the blood pressure lowering?

Both active components contribute to lowering blood pressure through different mechanisms. Bisoprolol helps by reducing heart rate and the force of contraction, while Hydrochlorothiazide helps by reducing the fluid volume in the body. The combined action of the two is described in official documents as synergistic (additive).

Q: What is the difference between bisoprolol and other beta-blockers?

Bisoprolol is classified as a beta1-selective adrenergic receptor antagonist, meaning it preferentially acts on beta1 receptors, which are mainly located in the heart. This selectivity is a key distinction from other types of beta-blockers.

Q: Are there any reasons a doctor would switch me from a different blood pressure medicine to Concor plus?

The primary indication for this fixed-dose combination is for patients whose high blood pressure is not adequately controlled when taking a single agent. The medicine is intended to be used when a patient's current treatment is not achieving the desired blood pressure targets.

Q: What happens if I stop taking Concor plus suddenly?

Sudden discontinuation of this type of medicine is strongly discouraged. According to regulatory documents, abrupt cessation is associated with risks, particularly for patients with heart disease, such as worsening chest pain (angina pectoris), myocardial infarction (heart attack), or dangerous heart rhythms. Official guidance indicates that dose changes, when necessary, should involve a gradual reduction (tapering) to mitigate potential risks.

Q: What is the risk of electrolyte imbalance with Concor plus?

The diuretic component, Hydrochlorothiazide, can cause the loss of important body salts (electrolytes), including potassium, sodium, and magnesium. Signs of a severe imbalance can include unusual dry mouth, excessive thirst, generalized weakness, muscle pains or cramps, or irregular heartbeats.

Q: Are there specific symptoms that require immediate medical attention while taking Concor plus?

Official warnings identify several serious symptoms. These include signs of heart problems (like trouble breathing, rapid weight gain, or swelling in the legs/ankles), symptoms of a severe allergic reaction (such as swelling of the face, throat, or tongue), or sudden, severe changes in vision or eye pain. Official labeling instructs that these symptoms require immediate consultation with a healthcare professional.

Q: Is Concor plus ever used for heart failure?

Official labeling states the medicine is contraindicated (should not be used) in cases of acute or uncontrolled heart failure (decompensation) and cardiogenic shock. Use of this medicine is restricted in patients with pre-existing heart conditions, and the need for careful consideration is highlighted in official documents.

Q: Does Concor plus interact with common antidepressants?

The medicine is formally contraindicated (prohibited) with Monoamine Oxidase (MAO) Inhibitors (except MAO-B inhibitors), which is one class of antidepressant. Co-administration with certain other drugs, including some antidepressants, may result in an additive blood pressure-lowering effect.

Q: Does Concor plus interact with pain relievers like ibuprofen?

Taking pain relievers classified as Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), such as ibuprofen, may reduce the intended blood pressure-lowering effect of Concor plus. This interaction can potentially lessen the effectiveness of the medicine in controlling blood pressure.

Q: Are there any herbs or supplements that interact with Concor plus?

Official labeling states that information regarding all medicines, including herbal products, vitamins, and other supplements, should be communicated to the prescribing healthcare provider. Certain supplements, such as those containing high amounts of potassium, may affect the drug's action or increase the risk of side effects, due to the diuretic component.

Q: Is there a link between Concor plus and weight gain?

Weight gain is not commonly listed as an adverse reaction for the combination drug in official documents. However, rapid weight gain or unusual swelling can be a symptom of a worsening heart condition, which should be immediately reported to a healthcare professional.

Q: Does Concor plus affect cholesterol levels?

The thiazide diuretic component (Hydrochlorothiazide) has been associated with changes in certain metabolic markers, including increases in cholesterol and lipid levels. These changes are generally small, and professional monitoring of these markers may be advised during treatment.

Q: Does Concor plus affect sleep?

Official adverse reaction lists document sleep disorders and drowsiness as uncommon side effects of this medicine.

Q: Can Concor plus cause changes in vision?

The medicine is associated with risks of vision changes, including transient blurred vision and, in rare cases, a serious eye problem called acute angle-closure glaucoma has been associated with the diuretic component.

Q: Does Concor plus affect my ability to drive or operate machinery?

The medicine can cause side effects like dizziness, tiredness, or drowsiness, which may affect the ability to drive or operate machinery, particularly at the start of treatment or following dose adjustments. Regulatory warnings indicate that caution should be exercised regarding activities that require alertness, particularly when starting the medicine or after a change in dosage.

Q: Can Concor plus cause a dry cough?

Cough is listed as a common side effect of the medicine.

Q: Is it okay to drink coffee while taking Concor plus?

Caffeine, the active component in coffee, is a stimulant that can increase heart rate and blood pressure. Stimulants may counteract the intended blood pressure-lowering effect of the bisoprolol component of the medicine.

Q: What kind of foods should I be careful about when taking this drug?

Official guidance indicates that limiting high-sodium foods may assist in blood pressure management. Grapefruit and grapefruit juice are also advised to be used with caution, as they may affect the absorption or concentration of the drug’s components.

Q: How is Concor plus stored?

Expired or unused tablets should not be disposed of in household trash, sinks, or toilets. Official instructions from regulatory bodies recommend returning unused medicine to a pharmacy or utilizing an authorized drug take-back program.

How should Concor plus be stored and disposed of?

Storage and Disposal of Concor Plus

Concor Plus (Bisoprolol Fumarate and Hydrochlorothiazide) must be stored according to official regulatory specifications to maintain its stability and quality.


Storage Conditions

Requirement Official Instruction
Temperature Store at controlled room temperature, generally 20 C to 25 C.
Protection Protect from moisture and direct light; keep in the original container, tightly closed.
Handling Keep from freezing and store away from excess heat.

Disposal and Safety

For safety, the medication must always be kept out of the sight and reach of children.

Expired or unused Concor Plus must not be disposed of via household trash, sinks, or toilets. Official instructions require that unused medicine be returned to a pharmacy or drug take-back program. If no take-back program is available, follow the FDA's guidance for disposal in the household trash, which involves mixing the medicine with an unappealing substance and sealing it.

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

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