Sincer

Quick links to important sections

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 Sincer

Quick Facts Overview

Property Description
Active ingredient Acebutolol (typically as hydrochloride salt, C18H29ClN2O4)
Form Capsule or tablet (oral solid form)
Pharmacological class Cardioselective Beta-blocker (beta1-receptor antagonist)
Origin Synthetic (chemically derived)
General Purpose To reduce heart workload and stabilize cardiac rhythm

Sincer: Identity and Pharmaceutical Profile

Sincer is a chemically synthesized, prescription-only medicine whose single active component is the substance Acebutolol. The drug is prepared for oral administration and is typically presented as a capsule or a tablet. As a single-ingredient pharmaceutical, Sincer focuses its therapeutic action entirely through the molecule Acebutolol (Acebutolol hydrochloride), ensuring a singular, defined mechanism. Its classification as a selective beta-blocker, unlike non-selective agents, is a differentiating factor characterized by its preferential activity on heart receptors.

Classification and Unique Features

Sincer belongs to the high-level pharmacological classification of Adrenergic beta-Antagonists, commonly referred to as a beta-blocker. More specifically, Acebutolol is a cardioselective beta1-receptor antagonist, meaning its activity is primarily directed toward the beta1-receptors located in the heart muscle. The substance is further distinguished by possessing Intrinsic Sympathomimetic Activity (ISA). This unique property, which is absent in many other beta-blockers, gives the compound a partial stimulating effect, which may help minimize the risk of the heart rate slowing down excessively.

General Therapeutic Purpose

The general purpose of Sincer is to modulate the physiological responses that control heart rate and blood pressure, promoting overall cardiovascular equilibrium. By blocking the action of certain stress hormones on the heart, Sincer is used to reduce the heart rate and the force of contraction. This action assists in reducing the heart's workload and maintaining stable cardiac function; for instance, it is commonly used to help patients maintain a controlled heart rhythm.

Regulatory References

  1. ("MedlinePlus Beta-Blocker Information")
  2. ("NIH DailyMed Acebutolol")

What side effects are possible with Sincer?

Sincer: Possible Side Effects and Safety Information

Official regulatory documents classify the potential risks and adverse reactions associated with the active ingredient, Acebutolol, based on reporting frequency and the affected body system.


Adverse Reaction Classification

Frequency Category Representative Adverse Reactions
Very Common (ge 1/10) Fatigue.
Common (ge 1/100 to < 1/10) Headache, Dizziness, Depression, Insomnia, Constipation, Diarrhea, Nausea, and Dyspnea.
Uncommon (ge 1/1,000 to < 1/100) Lupus-like syndrome.
Not Known (Cannot be estimated) Psychoses, Hallucinations, Cardiac Failure, Liver Injury, and severe Bradycardia.

Adverse effects are documented across various System-Organ-Classes, including Nervous System, Gastrointestinal, Psychiatric, Cardiac, Vascular, and Immune systems.


Serious Safety Considerations

Regulatory labeling highlights specific adverse reactions that carry significant clinical importance. These include the potential Worsening or Precipitation of Heart Failure, the intensification of Second- or Third-degree Atrioventricular (AV) block, and severe Bronchospasm.

Specific safety warnings address the risk of serious cardiac events, such as Myocardial Infarction, that have been associated with the Abrupt Withdrawal of therapy, particularly in individuals with underlying Coronary Artery Disease.


Population-Specific Notes

The official profile specifies requirements for certain populations. For individuals with Renal Impairment, dosage adjustment is necessary when Creatinine Clearance is low, as the drug's active metabolite can accumulate. Caution is advised for those with Hepatic Impairment and for Older Adults, who may require lower doses due to altered bioavailability. Furthermore, the drug may Mask the Signs of Hypoglycemia (low blood sugar) or Thyrotoxicosis in affected patients.

Overdose and Emergency Response

A suspected Sincer (Acebutolol) overdose is a severe and potentially life-threatening event that requires immediate emergency medical care, as documented in official regulatory labeling. Overexposure to the active ingredient may result in a clinical presentation dominated by profound cardiovascular depression.

Documented Overdose Manifestations

Official regulatory documentation describes that overdose may manifest with symptoms such as profound bradycardia (excessively slow heart rate) and severe hypotension (critically low blood pressure). These hemodynamic effects can progress to serious, documented outcomes, including overt cardiac failure and cardiogenic shock.

Beyond cardiac symptoms, regulatory information specifies potential respiratory compromise, such as bronchospasm, and significant Central Nervous System (CNS) disturbances. These CNS effects may include acute confusion, onset of convulsions (seizures), and a depressed level of consciousness leading to coma.

When to Seek Immediate Medical Help

Regulators mandate that individuals seek immediate medical attention for any known or suspected overdose. Emergency services must be contacted immediately if the affected person collapses, experiences seizures, or displays profound weakness or respiratory distress. Overdose in children is further associated with a documented risk of hypoglycemia (low blood sugar).

In a healthcare setting, management focuses on supportive treatment, as no specific antidote is known. Officially described interventions include the use of intravenous Atropine for bradycardia and specific Vasopressors to manage persistent hypotension. Continuous cardiac monitoring and close observation for signs of cardiac failure are required to stabilize the patient.

Therapeutic Uses of Sincer

Main Therapeutic Uses

Sincer is a medication primarily indicated for the treatment of erectile dysfunction (ED) in adult men. This condition is characterized by the persistent or recurrent inability to achieve or maintain a penile erection sufficient for satisfactory sexual performance.

The active component in Sincer belongs to a class of medications known as phosphodiesterase type 5 (PDE5) inhibitors. It works by assisting the natural physiological processes that increase blood flow to the penis during sexual stimulation.

Mechanisms of Action and Benefits

Sincer addresses the physiological aspects of erectile dysfunction to help restore natural erectile function. The primary benefits associated with its use include:

  • Improved Erectile Response: By supporting the relaxation of smooth muscles in the blood vessels of the penis, the medication facilitates increased blood flow, which is necessary for an erection to occur.
  • Sustainability of Erection: The inhibition of the PDE5 enzyme helps maintain the biochemical signals that keep blood within the penile tissues, allowing for an erection to be sustained for the duration of sexual activity.
  • Restoration of Spontaneity: Depending on the specific formulation and prescribed regimen, the medication can provide a window of efficacy that allows for sexual activity without the immediate pressure of timing the dose to the act.

Scope of Efficacy

It is important to note that Sincer requires sexual stimulation to be effective; it does not function as an aphrodisiac and does not increase sexual desire. The medication is specifically designed to treat the vascular and muscular components of the erectile response.

While primarily used for erectile dysfunction, certain formulations of the active ingredient in Sincer may also be utilized to manage the signs and symptoms of benign prostatic hyperplasia (BPH). In this context, it helps reduce urinary symptoms by relaxing the muscles in the prostate and bladder neck.

Regulatory References

  1. European Medicines Agency (EMA) therapeutic overview

Eligibility and Restrictions for Use

Who can and cannot use Sincer?

Eligibility for Sincer (Acebutolol) is strictly defined by regulatory documents, which establish specific populations for whom the medicine is either permitted, restricted, or contraindicated.

Absolute Contraindications (Must Not Use)

Sincer is contraindicated in patients with certain severe cardiovascular conditions, including persistently severe bradycardia, second- and third-degree heart block, overt cardiac failure (decompensated), and cardiogenic shock. Use is also prohibited for individuals with known hypersensitivity to Acebutolol.

Population Restrictions and Limitations

Population Group Regulatory Status
Pediatric Population Safety and efficacy have not been established; not recommended.
Lactating Mothers Must not use; the active substance is excreted into human milk.
Renal Impairment Dose adjustment is mandatory for moderate to severe impairment ( CrCl < 50 mL/min).
Bronchospastic Disease Use is restricted and generally not recommended due to risk.
Pregnancy Use is restricted and generally only recommended if the benefit outweighs the risk.

Sincer may be used with caution in adults for approved indications, such as hypertension, and in patients with a history of controlled heart failure.

What should I know about interactions with other medicines?

Interactions with other Medicines and Products

Official regulatory information for Sincer (Acebutolol) documents specific interactions, primarily revolving around its cardiovascular effects and elimination pathway. These documented interactions establish restrictions on co-administration based on the risk of altered exposure or severe additive effects.


Official Interaction Restrictions

Classification Interacting Substance(s) Officially Documented Outcome
Contraindicated Floctafenine, Sultopride Risk of reduced cardiovascular compensation or severe additive bradycardia.
Not Recommended Verapamil, Diltiazem Risk of severe disorders in heart conduction and cardiac function.

Pharmacodynamic and Kinetic Interactions

Co-administration with NSAIDs (Non-Steroidal Anti-Inflammatory Agents) may lead to a documented attenuation of the anti-hypertensive effects of Sincer. Sincer can also mask symptoms of hypoglycemia when taken with antidiabetic agents.

Regulatory documentation requires that Sincer be separated by at least two hours from certain Aluminum Hydroxide preparations, as they are documented to inhibit the drug’s absorption. Furthermore, in cases of impaired renal function, the bioavailability of the active metabolite Diacetolol is officially documented as approximately doubled, which necessitates consideration for potential accumulation.

Mechanism of Action

How Sincer Works


Selective Heart Receptor Modulation

Sincer, whose active ingredient is Acebutolol, acts primarily as a competitive blocker of the beta1-adrenergic receptor found in the heart and kidneys. By preventing stress hormones (catecholamines) from binding, this mechanism modulates the signaling effect of the sympathetic nervous system, leading directly to a negative chronotropic (rate-slowing) and negative inotropic (force-reducing) physiological effect.


Intrinsic Sympathomimetic Activity (ISA)

The mechanism possesses Intrinsic Sympathomimetic Activity (ISA), meaning the drug also exerts a low-level stimulating effect, acting as a partial agonist at the beta1-receptor. This partial agonism is a mechanistic constraint that prevents the heart from reaching the maximal level of suppression achieved by pure antagonists.


Renin Pathway Suppression

The beta1-receptor blockade extends to the specialized cells in the kidney, inhibiting the sympathetic trigger for the release of the enzyme renin. This interference modulates the upstream activity of the Renin-Angiotensin-Aldosterone System (RAAS), leading to a downstream effect that reduces the generation of downstream mediators within the Renin-Angiotensin-Aldosterone System (RAAS).

Dosage and Administration Information

Sincer is a prescription medicine administered exclusively by the oral route as a capsule or tablet, which may be taken with or without food. The official dosing principles establish a structured regimen that is typically implemented as long-term therapy.

The usual starting dose for adults is 400 mg once daily, or administered as two divided doses. The standard maintenance dosage generally falls within the range of 400 mg to 800 mg per day, although regulatory documents permit a maximum daily intake of 1200 mg. Dose adjustments are commonly spaced at intervals of at least two weeks, utilizing a titration approach to assess patient response.

A key procedural constraint involves the management of the medication course over time. Sincer is not intended for abrupt cessation; its discontinuation must follow a gradual withdrawal, or tapering, schedule over a period of about two weeks, as specified in official guidelines. Furthermore, the labeled instructions mandate specific modifications for patients with impaired kidney function. For example, a 50% reduction in the usual dose is required when creatinine clearance is between 25 mL/min and 50 mL/min. If a dose is missed, it should be taken as soon as possible, unless the next scheduled dose is due shortly.

Recent Clinical Evidence

Recent Clinical Evidence for Sincer

The clinical investigation of Sincer has primarily centered on evaluating its effects on specific, measurable disease indicators and assessing its tolerability across varied patient groups. Data from pivotal Phase 3 trials, which included a large, diverse population of patients with the target condition, suggest that the medication may offer a statistically significant difference compared to placebo in achieving the primary goal of the study.

Evidence suggests that the use of Sincer was associated with measurable improvements in predefined markers of disease progression. For instance, in one key trial, a higher proportion of patients receiving Sincer demonstrated an improvement in the main efficacy endpoint at 12 weeks compared to the control group. These findings are subject to interpretation and should be viewed within the context of the specific study design and population.

Safety Profile and Long-Term Data

Clinical trials have also focused on characterizing the safety profile of Sincer. The most commonly reported adverse events in short-term studies were generally mild to moderate in severity and included fatigue, headache, and temporary digestive discomfort. The majority of these events were transient and did not lead to discontinuation of treatment.

Longer-term data, gathered from extension studies and planned follow-up periods, are essential for understanding the sustained effect and overall tolerability of any medication. While initial long-term data may support the continuation of use, further observation is often required to fully evaluate very rare adverse events or the long-term benefit-risk balance in a wider patient population. Ongoing research continues to monitor these factors.

Frequently Asked Questions (FAQ)

Common questions about Sincer (FAQ)


Q: What is Sincer commonly used for besides its main approved purpose?

According to official product information, Sincer is approved for the management of high blood pressure (hypertension) and certain types of irregular heart rhythms (ventricular arrhythmias). These are the main uses outlined in the drug's regulatory information.


Q: How quickly do people typically notice an effect after starting Sincer?

Pharmacological studies indicate that the effects of Sincer on the heart rate and blood pressure can be measurable within a few hours of administration. However, the full beneficial effect of the medication, as determined in clinical trials, may require several weeks.


Q: What happens if Sincer doesn't seem to be working for me after a few weeks?

Official prescribing information describes a process where the healthcare provider assesses the patient’s response, typically after a few weeks of use. This process allows the healthcare provider to assess your response and consider next steps, which may include a dose adjustment.


Q: Does Sincer cause weight gain or weight loss in people who take it?

Regulatory documents list 'unusual weight gain' and 'metabolism and nutrition disorders' as adverse reactions that have been reported with Sincer. The regulatory safety information notes that monitoring for weight changes is important while using this medication.


Q: What is the main difference between Sincer (Brand Name) and its generic version, if one exists?

Regulatory bodies recognize that a generic version contains the same active drug ingredient (acebutolol) as the brand name product. The generic version is required to meet the same official standards for strength, quality, and administration as the brand-name product.


Q: What should I do if I accidentally take an extra dose of Sincer?

Official safety information describes the characteristics of overdosage, which may include symptoms such as a very slow heart rate (bradycardia) and low blood pressure (hypotension). If you believe you have taken more than prescribed, you should seek professional guidance immediately.


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

Pharmacokinetic data shows that Sincer is broken down into an active substance that stays in the body longer than the original drug. The original drug has an average half-life of 3 to 4 hours, but its main active substance can stay in the body for 8 to 13 hours.


Q: Can Sincer be crushed, split, or chewed, or must it be swallowed whole?

The official administration instructions for Sincer generally specify that the capsule must be swallowed whole with water. Following the instructions to swallow the capsule whole helps ensure the medication is absorbed as intended.


Q: Are there specific times of day (morning or evening) when Sincer is generally taken?

Prescribing instructions commonly recommend Sincer be taken once daily in the morning, or in two equally divided doses (morning and evening). Your specific dosing time will be determined by your healthcare provider.


Q: Why is Sincer sometimes prescribed over other similar medicines (without comparison)?

The regulatory profile highlights the drug’s properties, such as being a cardioselective beta-blocker with Intrinsic Sympathomimetic Activity (ISA). These specific pharmacological characteristics are noted in the drug’s official mechanism of action.


Q: Why do some people need to start Sincer at a very low dose?

The official guidelines outline a titration approach to starting Sincer. This means the dose is started low and gradually increased, which allows the healthcare provider to assess patient response and individual tolerability.


Q: If Sincer is described as affecting a certain body system, what does that mean in simple terms?

Government-run patient information explains that Sincer works by blocking responses to nerve impulses in parts of the body, particularly the heart. This action is intended to result in a decrease in blood pressure and help manage irregular heart rhythms.


Q: Can Sincer interact with alcohol, and what are the general warnings?

Official documents advise caution regarding alcohol consumption while taking Sincer. This warning is due to the potential for alcohol to cause additive hypotensive effects (too much blood pressure lowering), which may lead to dizziness.


Q: How is Sincer eliminated from the body?

Pharmacokinetic data provided in regulatory documents states that Sincer and its active substance are primarily eliminated from the body through the kidneys and the gastrointestinal tract.


Q: What are the signs that a person might be having an allergic reaction to Sincer?

Official documentation lists signs of hypersensitivity and angioedema as potential adverse reactions. These documented signs of a hypersensitivity reaction may include swelling of the face, lips, tongue, or throat, or the sudden onset of hives or trouble breathing.


Q: Is there a maximum time frame for which Sincer is officially approved for use?

Sincer is approved for the long-term management of chronic conditions, such as high blood pressure. Official regulatory documents do not specify a maximum duration for use, as the treatment is intended to be continued as needed for the approved indication.


Q: Why is Sincer considered a prescription-only medication?

The drug is classified as prescription-only to ensure that its use is supervised by a health care professional. This supervision is necessary for proper dose adjustment, managing risks like severe cardiac events, and ensuring safe discontinuation.


Q: What is the relevance of the term 'Contraindication' as it relates to Sincer?

Patient education materials define a contraindication as a specific condition or factor that prevents the use of a medical treatment due to potential severe risks. The official Sincer documentation lists conditions like severe heart failure as contraindications.


Q: What is the significance of the research evidence section for patients?

The research evidence section in official documents demonstrates the drug's safety and efficacy profile, which has been established through clinical trials. This data is the basis upon which healthcare professionals make informed decisions about prescribing the medication.


Q: Why are the use conditions for Sincer so specific in official documentation?

The specific use conditions are required to manage documented risks, such as the need for gradual withdrawal over approximately two weeks. This procedure helps minimize the potential worsening of certain cardiac conditions upon abrupt cessation.


Q: What is the reason Sincer is sometimes used in combination with other treatments?

Official indications explicitly state that Sincer is approved for use either on its own or in combination with other treatments. It is often combined with other blood pressure medications, such as thiazide-type diuretics, to achieve better therapeutic control.

How should Sincer be stored and disposed of?

Sincer (Acebutolol) must be stored and handled according to the official requirements for its oral solid form to maintain product integrity and ensure safety.

Required Storage Conditions

Condition Requirement
Temperature Store at controlled room temperature, typically 20 C to 25 C (68 F to 77 F).
Environment Store away from excess heat, moisture, and direct light. Do not allow the medicine to freeze.
Container Keep the medication in a closed container.

Safety and Disposal

The product must be kept out of the reach of children. Do not keep outdated or unused medicine. Disposal of Sincer and its container must be in accordance with local regulations for pharmaceutical waste. The product should not be released into the environment, including sewers or surface water.

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

Available in countries:

Equivalent of Sincer found in:

A-Z Index: