Betacal

Quick links to important sections

Betacal

Method of action: Antihypertensive

Treatment option:

Medically reviewed

Marina Burgos

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 Betacal

Betacal is a Fixed-Dose Combination medication, which means it contains two distinct active ingredients to manage blood pressure.

Property Description
Active ingredients [INN] Amlodipine and Atenolol
Form Oral Tablet (solid form)
Pharmacological class Combined Antihypertensive Preparation (Calcium Channel Blocker and Beta-Blocker)
General purpose Management of Hypertension
Origin Synthetic

What Type of Medicine is Betacal?

Betacal is a prescription-only, synthetic medication classified as a Combined Antihypertensive Preparation, specifically designed for individuals requiring dual therapy. This formulation belongs to the high-level therapeutic class for drugs used in the long-term Management of Hypertension. Unlike single-ingredient products (Monotherapy), this oral Tablet combines two distinct Pharmacological Classes into one, a strategy used to simplify chronic condition management for patients.

The Dual Composition of Betacal (Amlodipine and Atenolol)

The two active ingredients [INN] in Betacal are Amlodipine and Atenolol, uniting a Long-Acting Calcium Channel Blocker with a beta1 Selective Beta-Blocker. Amlodipine is a Dihydropyridine Calcium Antagonist, while Atenolol is a beta1 Selective Beta-Blocker. Both are Synthetic small molecules. The combination is a widely used formulation structure, valued for its ability to provide consistent simultaneous delivery of both agents for effective Oral administration. This dual therapy is intended to provide results superior to using either component as a Monotherapy.

General Purpose of the Combined Antihypertensive Preparation

The drug’s general purpose is to achieve effective and continuous control of high blood pressure by managing two different systemic factors simultaneously. The Amlodipine component achieves Peripheral Vasodilation by relaxing blood vessels, and the Atenolol component reduces the heart’s workload. This complementary dual action results in Synergistic Benefits, providing a stable, foundational method for the long-term Management of Hypertension in Adults and Elderly Patients.

What side effects are possible with Betacal?

Possible Side Effects and Safety Information

The safety profile of Betacal (Amlodipine and Atenolol) is structured by government regulatory agencies based on officially documented adverse reactions and safety constraints. The table below summarizes key side effects classified by frequency and affected body system, as documented in regulatory labeling.

Officially Documented Adverse Reactions

System Organ Class (SOC) Frequency Classification Official Adverse Reaction Listing
General Disorders Common Peripheral Oedema (Ankle swelling), Fatigue, Asthenia
Nervous System Common Headache, Dizziness, Somnolence
Vascular Disorders Common Hypotension, Cold extremities, Bradycardia
Gastrointestinal Common Nausea, Abdominal pain, Gastrointestinal disturbances
Psychiatric Disorders Uncommon Sleep disturbances, Depression, Mood changes
Hepatobiliary Disorders Rare Hepatic toxicity (e.g., Jaundice, Hepatitis)
Respiratory Disorders Rare Bronchospasm (can occur in susceptible patients)

Serious Safety Considerations

Regulatory documents highlight the potential for serious outcomes. The most critical include the risk of Acute Myocardial Infarction or Worsening Angina upon starting or increasing the dose of the Amlodipine component. Additionally, the abrupt discontinuation of the Atenolol component can lead to a withdrawal syndrome, potentially causing exacerbated angina or a Myocardial Infarction.

Population-Specific Constraints

Specific caution is required for certain patient groups: those with hepatic impairment may require dose adjustments due to accumulation, and patients with renal impairment must have the dose adjusted due to the primary elimination route of Atenolol. The medication is also contraindicated in conditions such as Cardiogenic Shock and Second or Third-Degree Heart Block.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose involving Betacal (Amlodipine and Atenolol) is officially documented as a potentially severe or life-threatening scenario, necessitating immediate emergency intervention. The primary clinical manifestations described in regulatory sources are profound and prolonged systemic hypotension and severe bradycardia. Other signs may include excessive peripheral vasodilation, altered consciousness, dizziness, and severe bronchospasm.


Documented Risks and Emergency Actions

A severe overdose is associated with the life-threatening outcomes of cardiogenic shock, acute cardiac failure, and acute kidney failure. Immediate medical attention must be sought for any suspected overdose. Emergency services must be contacted without delay upon the presentation of severe symptoms, such as fainting or profound drops in blood pressure. Regulatory documents note that overdose severity may be increased in patients with pre-existing renal impairment.


Official Management Protocols

Management protocols center on symptomatic and supportive treatment. Due to the prolonged action of the Amlodipine component, extended hospital observation and intensive cardiac monitoring are explicitly required. While no specific antidote is known for Amlodipine, documented procedures include the use of Activated Charcoal (if ingestion is recent) and specific agents, such as intravenous Calcium Gluconate and vasopressors, to manage the cardiovascular effects.

Therapeutic Uses of Betacal

What Betacal Treats: Main Uses and Benefits

Betacal (Amlodipine and Atenolol) is commonly used in cardiovascular medicine, precisely applied across therapeutic domains to help manage complex symptoms and provide comprehensive patient benefits. The individual agents are indicated for both high blood pressure and angina, which aligns with the core therapeutic strategy of the combination.

Key Therapeutic Focus

Betacal is primarily indicated for the stable, long-term Management of Essential Hypertension (high blood pressure) in adults. It is also used in managing Angina Pectoris and is considered relevant for providing support following conditions like a Myocardial Infarction. The therapy assists with managing Systemic Vascular Stress and supports general well-being during periods of heightened symptoms related to blood pressure.

Quick Fact: Applications in Hypertension and Angina


The dual-action approach is commonly used in conditions where functional stability becomes affected and additional support is relevant. The therapy helps address symptom clusters related to high blood pressure and may assist with managing symptoms related to physical discomfort during anginal episodes. It provides supportive relief when symptoms interfere with routine activities.

Regulatory References

  1. NIH MedlinePlus overview of Atenolol

Eligibility and Restrictions for Use

Who can and cannot use Betacal?

Betacal (Amlodipine and Atenolol) is officially restricted to certain populations, defining who may safely use the medicine based on established regulatory criteria.

Populations Who Must Not Use Betacal (Contraindications)

Use of this medicine is strictly prohibited for patients with a known hypersensitivity to Amlodipine, Atenolol, or related compounds. It is also contraindicated in specific cardiac conditions, including Cardiogenic Shock, Severe Hypotension, Second or Third-Degree Heart Block (without a pacemaker), and Severe Bradycardia. Further contraindications include Metabolic Acidosis and Untreated Phaeochromocytoma.

Age and Condition Restrictions

Betacal is primarily intended for adults. Use is not recommended for the pediatric population (under 18 years) due to insufficient established data for the combination product. The medicine is generally prohibited during Lactation (breastfeeding) and is not recommended during the second and third trimesters of Pregnancy.

Patients with Severe Renal Impairment require a restricted dose adjustment, and patients who are Older Adults or have Hepatic Impairment must begin treatment at the lowest available dose. Caution is also required for patients with Bronchospastic Disease (such as asthma) and Diabetes Mellitus.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documentation details specific interaction patterns for Betacal (Amlodipine and Atenolol) with other medicines, supplements, and foods.

Pharmacokinetic and Exposure-Altering Interactions

The Amlodipine component is subject to interactions involving the CYP3A4 metabolic enzyme. Co-administration with strong CYP3A4 inhibitors (such as Itraconazole or Clarithromycin) is documented to result in a significant increase in Amlodipine systemic exposure. Conversely, strong CYP3A4 inducers (such as Rifampicin or St John’s Wort) may lead to a lower plasma concentration of Amlodipine. The co-administration of Amlodipine with Simvastatin causes a documented increase in Simvastatin exposure; therefore, the Simvastatin dose is restricted to a maximum of 20 mg daily. The Amlodipine component may also increase the systemic exposure of immunosuppressants like Tacrolimus.

Pharmacodynamic and Timing Constraints

Additive blood pressure lowering effects are documented with alcohol and other antihypertensive agents. The Atenolol component may intensify the blood sugar lowering effects of antidiabetic medicines and mask symptoms of hypoglycemia. Intravenous Verapamil or Diltiazem is a formally prohibited combination within 48 hours of discontinuing the Atenolol component. Administration of the Atenolol component requires a separation of at least 2 hours from products like Aluminum Hydroxide to prevent reduced absorption. Grapefruit or Grapefruit Juice is not recommended due to a potential increase in Amlodipine bioavailability.

Mechanism of Action

How Betacal Works

beta1-Adrenergic Receptor Antagonism

This core mechanistic domain involves selective competitive blockade of the boldsymbolbeta1-adrenergic receptors, primarily located in the heart (myocardium and nodal tissue) and the juxtaglomerular cells of the kidney. By preventing the binding of endogenous catecholamines like norepinephrine, this action suppresses sympathetic signaling. This initiates molecular sequences that contribute to a reduction in the rate and force of cardiac muscle contraction and a subsequent decrease in myocardial oxygen demand.

L-Type Calcium Channel Inhibition

The drug engages mechanisms that regulate the transmembrane flow of calcium ions ( Ca^2+) into vascular smooth muscle and myocardial cells by inhibiting the boldsymbol L-type voltage-gated calcium channels. This modification of an early molecular step in the excitation-contraction coupling process results in reduced tension within the vascular smooth muscle and a corresponding decrease in afterload.

Modulation of the Renin-Angiotensin System

This pathway effect modifies the cascade of the Renin-Angiotensin-Aldosterone System (RAAS). The beta1 receptor blockade in the kidney reduces renin release, which is a critical upstream step that shapes systemic physiological outcomes. This action modulates hormonal signaling that influences fluid balance and vascular tone via the RAAS pathway.

Dosage and Administration Information

Betacal, an oral Fixed-Dose Combination tablet, is used in a standardized once-daily regimen for the chronic management of high blood pressure. The medication is designated for oral administration and may be taken with or without food. The tablet must be swallowed whole with water and should not be crushed or broken, maintaining the integrity of the combined dose.

The clinical profile of the drug involves a starting pattern of one tablet of the lowest combination strength once daily. Dosage adjustment, or titration, is typically performed after a period of 7 to 14 days to assess the response before increasing the intake level. The maximum labeled daily intake is the equivalent of 10 mg of Amlodipine and 100 mg of Atenolol, delivered as a single unit or divided dose.

Procedural constraints are applied for certain populations. In older adults or individuals with hepatic impairment, treatment initiation is characterized by the lowest available combination dose, often involving half a tablet, and careful, slow titration. Dose modification is also relevant for patients with severe renal impairment, specifically to limit the Atenolol component when creatinine clearance is leq 35 mL/min.

A critical rule governing the long-term use of this combination is its required discontinuation protocol. Since Betacal contains a beta-blocker, treatment must not be withdrawn abruptly. Instead, the dosage must be gradually reduced over a period of 7 to 14 days to complete the cessation process. This structural approach ensures consistency across its use profile.

Recent Clinical Evidence

Research Evidence / Overview of studies for Betacal

Evidence for use in Essential Hypertension

Research has focused extensively on the combination of Amlodipine and Atenolol in individuals with conditions characterized by systemic or functional imbalance, specifically high blood pressure. Randomized controlled trials (RCTs) and various comparative studies were used in research exploring how symptoms change over time, typically over short to intermediate follow-up durations. These studies commonly included adults with mild-to-moderate Essential Hypertension who were not reaching target goals with a single medication.

The primary outcomes studies explored were changes in blood pressure measurements, such as the change in Systolic and Diastolic Blood Pressure (SBP/DBP). Data show patterns related to different outcomes, where studies reported lower mean SBP and DBP measurements when the dual-agent regimen was used compared to the individual agents. This approach was also evaluated by checking the percentage of individuals who reached specific, pre-determined Target Blood Pressure Goals.

Evidence for use in Chronic Stable Angina Pectoris

The combination of Amlodipine and Atenolol was evaluated in research exploring outcomes related to physical discomfort in patients with Chronic Stable Angina Pectorus. Clinical trials and comparative studies were applied in studies examining patient-reported experiences of chest discomfort.

The studies explored patient-reported outcomes describing perceived discomfort, examining changes in the frequency of angina episodes and objective measures of the heart's function during periods of stress, such as exercise testing. Research highlights changes measured during the study period, where the combination was associated with different patterns in exercise metrics, such as prolonged time to onset of angina during stress testing, when compared to monotherapy arms.

What is Still Uncertain in the Research Record

While evidence contributes to understanding symptom patterns and blood pressure management, several research limitations exist. Comparative evidence is lacking in some areas; few recent large-scale trials have directly compared the long-term event reduction capability of the Amlodipine/Atenolol combination against all current standard-of-care combinations used today. Furthermore, there is limited information for long-term outcomes that specifically establish this combination's effect on major cardiovascular events over many years, as follow-up durations were limited in the FDC-specific studies. The research foundation for its use in secondary prevention post-Myocardial Infarction is largely linked to older evidence for Atenolol monotherapy, and the research exploring these treatment approaches is still emerging in the context of modern treatment.

Key Studies & References

  1. Atenolol (MedlinePlus Drug Information)
  2. Fixed-dose combination antihypertensive drugs. Simplifying treatment is a key to improving hypertension control

Frequently Asked Questions (FAQ)

Common questions about Betacal (FAQ)

Q: What happens if I miss a day of taking Betacal?

A: If a dose is missed, regulatory guidance generally suggests taking it as soon as it is remembered. However, if it is almost time for the next scheduled dose, regulatory guidelines indicate that taking a double dose to compensate for a missed one is not recommended. Patients are advised to follow their prescribed regimen and should avoid taking extra medication to make up for a missed dose.


Q: Can older adults typically use Betacal?

A: Yes, older adults can use this medication. Official labeling for the drug describes that treatment initiation often requires the lowest available dose in this population. Careful and slow dose adjustments are often required due to the potential for increased systemic exposure to the medicine.


Q: Is Betacal considered safe for long-term use?

A: The drug is officially approved for the chronic management of conditions like high blood pressure, which often involves long-term administration. Regulatory guidelines stress the importance of regular progress checks by a healthcare provider to monitor for potential long-term effects.


Q: Can Betacal cause changes in sleep patterns?

A: Yes, official product information indicates that the medication may affect the nervous system and sleep. Common side effects include somnolence (drowsiness), and less common side effects are sleep disturbances (like insomnia or abnormal dreams). Depression has also been reported.


Q: Is there a risk of dependency or addiction with Betacal?

A: Official information does not describe this medication as having a risk of dependency or addiction. However, the Atenolol component is associated with a risk of a withdrawal syndrome. For this reason, official safety information states that the medicine must be discontinued slowly under a healthcare provider’s guidance, as abrupt cessation may lead to exacerbated angina or a heart attack.


Q: Are there any specific patient monitoring requirements when using Betacal?

A: Yes, regulatory documents note the need for patient monitoring. A healthcare provider is likely to check a patient’s progress regularly, and certain blood tests may be required to monitor for unwanted effects. Dose modifications are also necessary for patients with severe kidney or liver impairment.


Q: Can Betacal be used by people who are sensitive to lactose?

A: Official regulatory documents require a complete list of all inactive ingredients in the drug. To determine if a specific formulation of Betacal contains lactose or any other ingredients of concern, the patient should check the specific inactive ingredient list on the product’s official label.


Q: What is the maximum amount of time research has studied Betacal for?

A: Research supporting the initial use of the Amlodipine/Atenolol combination focused primarily on short to intermediate follow-up periods. While the individual components have been studied for many years, the specific maximum duration of follow-up for the combination trials is not routinely summarized in the patient-facing regulatory labeling.


Q: Have there been any major studies comparing Betacal to a placebo?

A: Regulatory documents confirm that clinical trials have been used, and these studies often involve comparisons to a placebo or to active treatments, particularly when exploring use in mild-to-moderate hypertension.


Q: Does Betacal need to be taken consistently to maintain its effect?

A: Consistent, daily use is indicated for the chronic management of high blood pressure. This consistent administration is intended to help maintain continuous control of the condition over time.


Q: Is it normal for Betacal to cause a mild headache initially?

A: Yes, headache is listed as a Common side effect in the official regulatory safety profile of the medication. The labeling notes that this effect is frequently reported, but it does not specify the duration or intensity (mild versus severe) of the symptom.


Q: Does the time of day I take Betacal matter?

A: The medication is intended to be taken once a day. Patients are generally advised to take the dose around the same time every day to help establish a routine and ensure consistent drug levels in the bloodstream. Official guidance does not specify a mandatory time of day for administration.


Q: Is there a list of all inactive ingredients in Betacal?

A: Yes, all inactive ingredients are required to be disclosed. Official product information includes a complete list of every substance used in the final drug product, including both active and inactive components.


Q: Can Betacal cause stomach upset?

A: Yes, the official list of common adverse reactions includes gastrointestinal disturbances, abdominal pain, and nausea. These effects may be experienced by patients and described as general 'stomach upset'.


Q: How long does Betacal stay in the body after the last dose?

A: The official product information contains technical data called pharmacokinetics, which includes the half-lives of the active components. This information is used to characterize how quickly the drug is eliminated from the body after the final dose is taken.


Q: What regulatory class does Betacal belong to?

A: Betacal is a prescription-only medication. The two active components, Amlodipine and Atenolol, are not designated as Controlled Substances under US Drug Enforcement Administration (DEA) scheduling.


Q: Why is Betacal sometimes preferred over other treatment options?

A: The combination of the two active ingredients is described in research as providing a synergistic effect—meaning the combined effect is greater than the individual effects—on blood pressure control. This dual action is shown to be superior to using either component alone (monotherapy).


Q: Why is Betacal used to manage more than one condition?

A: The medication contains two distinct active ingredients, each with a different primary purpose. The Amlodipine component is indicated for treating Chronic Stable Angina, and the combination (or the Atenolol component) is indicated for managing Hypertension (high blood pressure).


Q: Is it necessary to inform a dentist that I am taking Betacal?

A: Yes. Official health information states that patients should ensure any doctor or dentist who treats them knows that they are using this medication. This helps ensure that all aspects of their care are considered.


Q: Does Betacal have a Pregnancy Category designation?

A: Under the current US regulatory system, the drug is Not Assigned a letter category (like A, B, C, D, or X). However, official warnings state that the medication is not recommended during the second and third trimesters of pregnancy.


Q: What happens if Betacal is taken at the same time as certain antacids?

A: Antacids containing Aluminum Hydroxide can reduce the absorption of the Atenolol component. For this reason, official warnings advise separating the dose of Betacal from this type of antacid by at least two hours.


Q: Is there a known risk of weight change associated with Betacal?

A: Yes, regulatory labeling for the Amlodipine component has included reports of changes in weight. Both weight gain and weight decrease have been reported as adverse reactions associated with the use of the medicine.

How should Betacal be stored and disposed of?

Official Storage Requirements

Betacal tablets must be stored at controlled room temperature, typically between 20 C and 25 C (68 F and 77 F), and must not be stored above 30 C. To maintain the stability of the medicine, it is mandatory to protect the tablets from light and moisture. This requires keeping the tablets in the original container with the closure kept tightly closed. The product must also be kept from freezing and should not be stored in environments like the bathroom due to potential humidity and heat.

Child Safety and Disposal

As a mandatory regulatory requirement, this medication must be stored out of the sight and reach of children. Unused or expired Betacal should not be kept; it must be disposed of safely according to local regulations. Patients should consult a pharmacist or healthcare professional for specific guidance on how to properly discard the unused product.

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

Available in countries:

Equivalent of Betacal found in:

A-Z Index: