Asomex

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Asomex

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Asomex

Quick Facts

Property Description
Active Ingredient S(-) Amlodipine Besilate
Form Oral tablet
Pharmacological Class Calcium Channel Blocker (CCB)
Primary Use Type Antihypertensive and Antianginal
Origin Synthetic (Dihydropyridine Derivative)

What Type of Cardiovascular Agent is Asomex?

Asomex is a specialized, prescription-only oral tablet that is classified as a Calcium Channel Blocker (CCB), used in cardiovascular management. This medication belongs specifically to the dihydropyridine subgroup of CCBs, known for its targeted action on the body's blood vessels. It is defined as a single-entity product (Monotherapy) intended for long-acting cardiovascular regulation, making it a suitable choice for adults requiring consistent, once-daily management of their vascular tone.

Composition: S-Amlodipine as the Active Ingredient

The core active ingredient in Asomex is S(-) Amlodipine Besilate, a synthetic derivative. S-Amlodipine represents the pharmacologically active S-enantiomer of the conventional Amlodipine compound. Pharmacological studies support the principle that isolating this specific enantiomer concentrates the therapeutic efficacy, chemically differentiating it from older, racemic Amlodipine formulations. The product is administered in the dosage form of an oral tablet.

General Purpose: Reducing Resistance and Supporting Blood Flow

The general therapeutic purpose of Asomex is to manage blood flow by acting as a calcium ion antagonist, inducing peripheral arterial vasodilation. This physiological action reduces the peripheral vascular resistance that the heart must overcome, which in turn leads to a controlled lowering of blood pressure (hypertension). This mechanism is key in typical use scenarios, providing support for its role as a regulator of vascular tone.

Regulatory References

  1. MedlinePlus Drug Information on Amlodipine
  2. National Institutes of Health (NIH) StatPearls on Amlodipine
  3. Amlodipine Mechanism of Action

What side effects are possible with Asomex?

Possible Side Effects and Safety Information

The safety profile of Asomex (Amlodipine Besilate) is based on data from clinical trials and post-marketing surveillance, as documented in official government regulatory labels.

Frequency-Classified Adverse Reactions

Adverse reactions are classified according to frequency observed in regulatory studies. The most common effects primarily involve the vascular and nervous systems:

  • Common (occur in 1% to 10% of users): Edema (swelling, often dose-related), headache, fatigue, nausea, abdominal pain, somnolence (drowsiness), dizziness, flushing, and palpitations.
  • Uncommon (occur in 0.1% to 1% of users): Hypotension, arrhythmia (irregular heartbeat), syncope (fainting), pruritus (itching), rash, dyspnea (shortness of breath), and various gastrointestinal disturbances.
  • Rare/Very Rare (occur in less than 0.1% of users): Includes conditions such as hepatitis, jaundice, pancreatitis, severe skin reactions (e.g., Erythema Multiforme), and gingival hyperplasia (gum tissue overgrowth), which is rarely reported with prolonged use.

Serious Adverse Reactions

Although rare, certain reactions are considered serious and require immediate attention, as documented in regulatory safety labels:

  • Worsening of Angina or Acute Myocardial Infarction (Heart Attack): This is a documented risk, especially when initiating therapy or increasing the dose in individuals with severe obstructive coronary artery disease.
  • Symptomatic Hypotension: Low blood pressure causing symptoms like dizziness or fainting.
  • Severe Hypersensitivity Reactions: Including angioedema (swelling of the face, lips, or throat).

Safety Restrictions and Considerations

  • Contraindication: Asomex is strictly contraindicated for individuals with a known hypersensitivity to amlodipine or other dihydropyridine derivatives.
  • Population Safety: Caution is advised for patients with hepatic impairment (liver problems) due to reduced drug clearance. Elderly patients may also have reduced clearance and require careful monitoring.

Overdose and Emergency Response

Asomex Overdose and When to Seek Help

Overdose involving S(-) Amlodipine Besilate, the active ingredient in Asomex, is documented in regulatory sources to present with significant hemodynamic instability due to excessive peripheral vasodilation.

Documented Clinical Manifestations

Officially documented overdose presentations include signs of severe peripheral vasodilation, leading to profound and prolonged systemic hypotension (extremely low blood pressure). This may be accompanied by cardiac effects such as reflex tachycardia (rapid heart rate) or bradycardia (slow heart rate), as noted in prescribing information. Other manifestations documented include syncope (fainting), dizziness, and somnolence. Severe consequences documented in official labeling include circulatory shock, acute renal failure, and the potential for tissue hypoperfusion leading to target organ damage.

Emergency Response and Management

Regulatory authorities state that immediate medical attention must be sought for any suspected overdose, particularly when clinically significant hypotension is present. Contacting emergency services or a Poison Help line is the required action. Management protocols described in official documents are strictly symptomatic and supportive, as no specific antidote is known. Supportive measures include the crucial maintenance of Airway, Breathing, and Circulation (ABCs), the potential use of gastric lavage, administration of vasoconstrictors to restore vascular tone, and calcium infusion to counteract the documented effects. Close and continuous monitoring of cardiac and vital signs is required for an extended period following exposure.

Therapeutic Uses of Asomex

What Asomex Treats: Main Uses and Benefits

Asomex is commonly used across domains where additional symptomatic support is needed, primarily for conditions presenting with systemic or localized discomfort and heightened physiological activity. The medication is applied in clinical settings marked by temporary physiological imbalance and is commonly used when short-term symptomatic assistance is needed.


Key Therapeutic Support

The therapeutic application is relevant for easing groups of symptoms that may appear suddenly or intensify over time. This includes conditions characterized by periods of heightened symptoms and fluctuating manifestations, and those presenting with systemic discomfort and a need for improved functional stability. The medicine is generally applied during phases of increased distress, where supportive relief helps patients cope more steadily with difficult episodes.

“It provides support that helps ease the overall symptom burden.”

Supportive Focus: Addressing Systemic Strain

The core benefit of Asomex is assisting with the management of symptoms that create noticeable physiological strain and heightened systemic burden, contributing to improved comfort during symptomatic periods. The drug is considered relevant in contexts involving:

  • Symptom Clusters: Helps address symptom clusters that may become intense or disruptive.
  • Episodic Manifestations: Applied when conditions produce significant symptomatic burden across recurrent or episodic manifestations of discomfort.
  • Functional Stability: Assists with maintaining functional stability when symptoms interfere with routine activities.

In general, this medicine may support the maintenance of a sense of stability during phases when symptoms become more noticeable, serving as part of temporary symptomatic management.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Who Can and Cannot Use Asomex? (Official Regulatory Information)

Official regulatory documents define strict population eligibility for Asomex (S(-) Amlodipine Besilate).


Contraindicated Populations (Must Not Use)

Individuals are strictly prohibited from using Asomex if they have a known hypersensitivity to amlodipine, other dihydropyridines, or any excipients. Use is also contraindicated in patients with severe hypotension, cardiogenic shock, and obstruction of the outflow tract of the left ventricle (e.g., high-grade aortic stenosis), due to the high risks associated with these conditions.


Age and Condition-Based Restrictions

Population Group Eligibility Status (Regulatory Basis)
Adults Approved for hypertension and angina.
Pediatric (6–17 years) Approved for hypertension only.
Children (<6 years) Safety and effectiveness not established.
Hepatic Impairment Use with caution; lower starting dose and slow titration are recommended.
Pregnancy/Lactation Conditional Use in pregnancy; excretion in breast milk is documented, requiring careful consideration.
Older Adults Normal dosage recommended, but dosage increases should be applied with care.

These limitations strictly govern the use of the medicine across different patient categories as mandated by official health authorities.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Regulatory documents define the interaction profile of Asomex (S(-) Amlodipine Besilate) based on its metabolic pathway and pharmacodynamic properties. Co-administration with other substances can alter systemic exposure or reinforce effects, leading to specific regulatory constraints.

Pharmacokinetic and Exposure Alterations

The primary metabolic pathway involves the CYP3A4 enzyme system. Co-administration with strong or moderate CYP3A4 inhibitors (e.g., Azole antifungals, Macrolides, Diltiazem) is documented to increase systemic exposure to amlodipine. Conversely, CYP3A4 inducers (e.g., Rifampicin, St John's Wort) may cause plasma concentrations to vary.

Co-administered Substance Official Interaction Constraint
Simvastatin The maximum daily dose must be limited to 20 mg due to a documented increase in Simvastatin exposure.
Tacrolimus/Cyclosporine Co-administration may increase the exposure of the immunosuppressant, requiring monitoring of trough blood levels.

Pharmacodynamic and Substance Interactions

Interactions with other antihypertensive agents result in additive blood pressure lowering effects. Co-administration with Sildenafil requires monitoring for symptomatic hypotension. Consumption of Grapefruit or Grapefruit Juice is not recommended due to the potential to increase amlodipine bioavailability and hypotensive effects.

Population-Specific Note: The increased exposure risks associated with CYP3A4 inhibitors may be more pronounced in elderly patients and those with hepatic impairment due to reduced drug clearance.

Mechanism of Action

Targeted Blockade of Calcium Ion Influx

The core mechanism of Asomex (S(-) Amlodipine Besilate) involves the selective and long-acting blockade of L-type voltage-dependent calcium channels found on the membranes of arterial smooth muscle cells. This action is exclusive to the S-enantiomer and physically prevents the necessary entry of extracellular calcium ions ( Ca^2+) into the cell. This molecular interference initiates the modulation of the smooth muscle contraction pathway throughout the peripheral vasculature.

Modulation of Peripheral Vascular Resistance (Afterload)

By reducing the concentration of intracellular Ca^2+, the drug interrupts the biochemical sequence required for vascular muscle cells to contract and maintain tension. This leads to widespread peripheral arterial vasodilation—the widening and relaxation of the blood vessels. This sustained physiological effect directly results in a reduction of the peripheral vascular resistance and the resulting cardiac afterload.

Mechanism-Kinetics Interface and Sustained Function

The mechanism is characterized by a slow association and dissociation rate at the L-type Ca^2+ channel receptor site. This kinetic property confers a sustained level of channel blockade for a full 24-hour period. This particular kinetic profile influences the long-term modulation of vascular tone rather than rapid, acute modulation, which results in a state of sustained, lowered vascular tone.

Dosage and Administration Information

Official Administration Guidelines

Asomex (Levamlodipine Besilate) is an oral medication that must be taken strictly according to the official instructions provided in the prescribing information.

Route and Timing

Parameter Instruction
Route of Administration Oral (by mouth) only.
Frequency Once daily (qDay).
With or Without Food May be taken without regard to food or meals.
Missed Dose If a dose is missed, take it as soon as possible. If it is almost time for the next scheduled dose, skip the missed dose. Do not take two doses at the same time.

Standard Dosing

The usual initial adult dose is 2.5 mg taken once daily. The dose can be adjusted based on the patient's response to treatment. The maximum recommended adult dose is 5 mg once daily. Dosage adjustments, or titrations, are typically performed at intervals of 7 to 14 days to fully assess the patient's response.

Population-Specific Instructions

  • Elderly or Fragile Patients: A lower initial dose of 1.25 mg once daily may be used in small, fragile, or elderly patients.
  • Hepatic Impairment: Patients with liver problems may be started on a lower dose of 1.25 mg once daily.
  • Pediatric Use (6–17 years): The effective dose is 1.25 mg to 2.5 mg once daily. Doses exceeding 2.5 mg daily have not been studied in this age group and are not recommended.

Special Conditions

The tablet should be swallowed whole with a drink of water. Grapefruit and grapefruit juice should be avoided as they may lead to an unpredictable increase in the drug's effect.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Asomex


Evidence for Use in Managing High Blood Pressure (Hypertension)

Research exploring S(-) Amlodipine has focused on its evaluation in trials for managing high blood pressure. Studies conducted include Randomized Controlled Trials (RCTs) and meta-analyses, which combine the results of multiple trials. These studies described patterns observed in adults with mild to moderate essential hypertension.

The main focus of these trials was to evaluate the measurement of blood pressure changes. Researchers monitored systolic and diastolic blood pressure readings, both in the clinic and using 24-hour ambulatory monitoring. Findings describe patterns observed in the studies, where blood pressure readings evolved in the observed populations. Comparative research monitored the incidence of peripheral oedema (swelling) between this formulation and the older, racemic amlodipine. Some studies recorded a lower occurrence of this event with the S-enantiomer, while other studies found findings were mixed.

Evidence for Use in Managing Chronic Stable Angina

Research for S(-) Amlodipine in chronic stable angina was evaluated in settings relevant to the medicine's pharmacological class. Studies examined outcomes reflecting daily functioning in patients with Chronic Stable Angina or Vasospastic Angina. Research monitored how symptoms evolved in the observed populations, specifically looking at changes in the frequency of chest discomfort episodes and the consumption of rescue medication, such as nitroglycerin tablets.


What Remains Uncertain About the Research

Most available studies have focused on short-term periods, typically ranging from 4 to 12 weeks. For this specific formulation, long-term effects are not fully established and there is limited information for long-term outcomes, such as the effect on cardiovascular events over many years.

One key limitation is the scarcity of dedicated, large-scale long-term cardiovascular outcome trials that specifically use S(-) Amlodipine compared to other established classes of blood pressure medication. Data for certain specific groups, such as those with complex comorbidities, remain insufficient. The research provides context but not individual predictions of long-term outcomes.

Key Studies & References

  1. Tolerability and Effectiveness of (S)-Amlodipine Compared With Racemic Amlodipine in Hypertension: A Systematic Review and Meta-Analysis - NCBI

Frequently Asked Questions (FAQ)

Common questions about Asomex (FAQ)

Q: How long does it typically take to see the full therapeutic effect of Asomex?

A: According to official product information, the medicine’s concentration in the blood may typically reach its peak in a range of 6 to 12 hours after a dose. The maximum blood pressure lowering effect is usually assessed by a healthcare provider after 7 to 14 days of consistent daily dosing.

Q: Why does Asomex cause ankle swelling in some people?

A: The medicine works by relaxing and widening the blood vessels (vasodilation), and this action is associated with lowering blood pressure. This dilation can create an imbalance in the pressure of tiny blood vessels called capillaries. This increased pressure is described as leading to fluid potentially leaking into the surrounding tissues, which may be visible as swelling in the ankles and feet.

Q: Is Asomex considered safe for people who have a history of kidney disease?

A: Official information indicates that the drug's processing in the body is not significantly affected by kidney (renal) impairment. Therefore, patients with renal conditions may receive the usual starting dose. However, official information indicates that a patient's response and dosing should be determined by a healthcare provider who monitors any existing kidney condition.

Q: Can Asomex affect the ability to drive or operate machinery?

A: Because the drug may cause side effects like dizziness or somnolence (drowsiness), it has the potential to affect alertness and coordination. Regulatory warnings indicate that caution is advised regarding driving or operating heavy machinery until an individual is aware of how the medicine affects them.

Q: Does Asomex interact negatively with alcohol consumption?

A: Official regulatory documents state that it is unknown if consuming alcohol will affect the medicine. However, since alcohol can also lower blood pressure and cause dizziness, combining them may result in a potential for increased risk of dizziness or lightheadedness.

Q: Is it true that Asomex acts as a blood thinner?

A: No. Asomex is classified as a Calcium Channel Blocker (CCB), a class of medicine that works by relaxing the blood vessels to help manage blood pressure. It is not an anticoagulant or 'blood thinner' which works to prevent blood clots.

Q: Is Asomex known to cause sexual dysfunction as a side effect?

A: Sexual dysfunction has been reported in regulatory documents as an uncommon side effect. This has been noted to potentially affect both males and females.

Q: Is there any food that should be avoided while taking Asomex?

A: The only food product specifically mentioned in regulatory warnings to be avoided is grapefruit or grapefruit juice. This is due to the potential for it to increase the medicine's effect. Otherwise, the medicine may be taken without regard to meals.

Q: Is it generally recommended to take Asomex in the morning or at night?

A: The medicine is prescribed to be taken once daily. The official administration guidelines do not specify a best time (morning or night) for taking the dose. The once-daily frequency is designed to provide sustained action.

Q: Does Asomex have an effect on a person's heart rate?

A: Yes, in some individuals, the medicine may cause changes in heart rate. Regulatory documents list changes to heart rhythm or rate as potential side effects. Bradycardia (slow heart rate) or tachycardia (fast heart rate) have been reported as uncommon side effects.

Q: Is Asomex the same exact drug as Amlodipine Besylate?

A: No. The active ingredient in Asomex is the S(-) enantiomer of amlodipine. Conventional Amlodipine Besylate is a racemic mixture containing both the S(-) and R(+) enantiomers. This chemical difference is noted in official product descriptions.

How should Asomex be stored and disposed of?

How to Store and Dispose of Asomex: Official Guidelines

This information reflects the regulatory storage and disposal requirements for Asomex (S-Amlodipine) as documented in official prescribing information.

Storage Conditions

Requirement Type Official Statement
Temperature Store at Controlled Room Temperature (typically below 30 C).
Protection Must be protected from light and protected from moisture.
Handling Keep from freezing and preserve in the original, tight, light-resistant container.
Safety Keep out of the reach and sight of children.

Disposal Instructions

To ensure environmental safety, do not dispose of unused or expired Asomex in household trash or down a drain (e.g., toilet or sink).

Disposal must be conducted in accordance with local requirements. Patients should consult a pharmacist or healthcare professional for guidance on returning unused medication to a take-back program or designated collection point.

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

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