Amiclar

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Medically reviewed

Laura Arias

Last updated on 22/12/2025

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

Overview of Amiclar

What is Amiclar? A Quick Overview

Property Description
Active ingredient Clarithromycin (Rx status)
Forms Tablets, oral suspension, powder for IV solution
Pharmacological class Macrolide antibiotic
General purpose To counteract the proliferation of bacterial pathogens
Origin Semi-synthetic derivative

What Type of Medicine is Amiclar?

Amiclar is a prescription-only medicine whose active ingredient is Clarithromycin. It is formally classified as a Macrolide antibiotic, placing it within a key group of antimicrobial agents used to address systemic infections. Clarithromycin is a semi-synthetic compound, chemically modified from its parent substance, Erythromycin.

This structural modification is clinically recognized for providing Amiclar with greater stability in stomach acid and improved bioavailability compared to older macrolides, ensuring a more reliable level of active medicine reaches the bloodstream. The drug’s ultimate purpose is to counteract the proliferation of susceptible bacterial pathogens by suppressing their growth and survival.


Composition and Available Forms

Amiclar is a single-ingredient product where the antimicrobial effects are attributed solely to the Clarithromycin entity. Its differentiating features include a variety of pharmaceutical presentations that accommodate different patient groups and clinical scenarios.

The drug is offered in forms for oral use, such as film-coated tablets and granules for oral suspension—a flexible option frequently used for pediatric patients. Additionally, it is manufactured as a lyophilized powder intended for reconstitution into a solution for intravenous (IV) administration, a route reserved for acute clinical settings. The availability of both oral and injectable routes is clinically recognized for facilitating the continuous and uninterrupted treatment of systemic infections.

Regulatory References

  1. NIH DailyMed Label for Clarithromycin

What side effects are possible with Amiclar?

Amiclar (aminocaproic acid) is a hemostatic agent used to manage acute and chronic bleeding associated with excessive breakdown of fibrin clots. While generally well-tolerated, it is associated with several side effects and requires caution in certain patients.

Common Side Effects

The most frequently reported adverse effects of Amiclar include gastrointestinal disturbances such as nausea, vomiting, diarrhea, abdominal pain, and headache. Patients may also experience dizziness, malaise, or nasal congestion.

Serious Side Effects and Safety Information

Amiclar can cause more serious, though less frequent, adverse effects. Patients should seek immediate medical attention if they experience signs of a blood clot, such as sudden pain, swelling, warmth, or numbness in an arm or leg, or sudden shortness of breath. The risk of thrombosis is a key consideration, especially in patients with a history of blood clots.

Amiclar has also been associated with muscular toxicity (myopathy and rhabdomyolysis), which can lead to muscle weakness and dark-colored urine due to acute renal failure. Patients on long-term therapy may need monitoring of muscle enzyme levels. Allergic reactions, characterized by a rash or hives, are also possible.

Contraindications for the use of Amiclar include active disseminated intravascular coagulation (DIC) without concomitant heparin, and certain types of upper urinary tract bleeding where it may cause intrarenal obstruction. Caution is advised in patients with pre-existing kidney or liver disease.

System Potentially Serious Side Effects (Examples)
Cardiovascular Thrombosis, Bradycardia, Hypotension
Musculoskeletal Myopathy, Rhabdomyolysis
Renal Acute renal failure, Intrarenal obstruction
Allergic Anaphylaxis, Rash

It is important to inform your healthcare provider of all current medications, as Amiclar may interact with other agents, such as certain clotting factor concentrates.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory documentation for Amiclar (Clarithromycin) describes a profile of documented manifestations and mandatory emergency actions for suspected overdose.

Manifestations and Severe Outcomes

Acute overdose is most frequently characterized by severe gastrointestinal disturbances, including abdominal pain, nausea, vomiting, and diarrhea. Administration of very high doses has also been associated with reports of transient hearing loss. More critically, high concentrations of the medicine pose a risk for serious cardiovascular effects. These include prolongation of the QT interval and the potential development of ventricular arrhythmias, such as Torsades de Pointes, which are considered life-threatening outcomes.

Mandatory Emergency Actions and Management

Immediate medical attention is required for any suspected overdose. Emergency services must be contacted immediately if severe signs are observed, specifically collapse, seizure, trouble breathing, or if the individual cannot be awakened. Management procedures officially consist of providing symptomatic and supportive treatment and measures for the prompt elimination of unabsorbed drug. Regulatory documents confirm that no specific antidote is known for this overdose. Furthermore, the official labeling notes that Clarithromycin cannot be significantly removed by hemodialysis or peritoneal dialysis. Continuous ECG monitoring is typically required due to the risk of cardiac instability.

Therapeutic Uses of Amiclar

Amiclar (Clarithromycin) is commonly used to help with a wide range of bacterial infections. This medication is applied across therapeutic domains that include infections of the ears, sinuses, skin, and throat, as well as lower respiratory tract infections such as pneumonia and bronchitis.

Key Uses and Symptom Management

Amiclar's therapeutic relevance includes its application in addressing the heightened symptoms associated with these infections. It is relevant in clinical settings that involve acute or disruptive symptom patterns, such as severe cough, fever, and inflammation, which require supportive management. Amiclar is relevant for managing symptoms across several domains, including acute infections of the upper and lower respiratory tract, skin and soft tissue infections, and is an important part of the multi-drug regimen used for managing symptoms in conditions where H. pylori is present. Furthermore, it is a key therapeutic alternative for patients with a known penicillin allergy.

This supportive use contributes to easing the overall symptom load and assists with maintaining functional stability during periods when symptoms are more noticeable.

Quick Fact: Relief for Respiratory Discomfort
Amiclar is commonly used to help manage acute symptomatic episodes, contributing to improved comfort by easing symptoms related to inflammatory states, such as those seen in community-acquired pneumonia and bronchitis exacerbations, including fever and persistent cough.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Official Eligibility and Contraindication Rules

Regulatory documents establish strict eligibility criteria defining the authorized user population for Amiclar (Clarithromycin).

Contraindicated Populations (Must NOT Use) Condition-Specific Restrictions
Patients with known macrolide hypersensitivity (to clarithromycin, erythromycin, or other macrolides). Use with caution in patients with impaired hepatic function (without severe renal impairment).
History of QT prolongation or ventricular cardiac arrhythmia (e.g., Torsades de Pointes). Dosage reduction is required for patients with severe renal impairment (CrCl < 30 mL/min).
Uncorrected hypokalaemia or hypomagnesaemia. Contraindicated in severe hepatic failure combined with renal impairment.
History of cholestatic jaundice or hepatic dysfunction associated with prior clarithromycin use. Use with caution in patients with certain cardiovascular conditions (e.g., severe cardiac insufficiency).

Age-Related Eligibility

Amiclar is generally approved for use in adults and adolescents aged 12 years and older. Safety and effectiveness have not been established for use in infants under 6 months of age. The film-coated tablet formulation is not recommended for children younger than 12 years; this age group typically uses the oral suspension formulation.

Pregnancy and Lactation Status

Use during pregnancy is not recommended unless the potential benefit justifies the potential risk to the fetus, particularly during the first and second trimesters. Caution should be exercised when administered to a nursing mother, as the medicine is excreted into human breast milk.

What should I know about interactions with other medicines?

Interactions with other medicines and products

It is essential to inform your doctor or pharmacist of all medicines you are currently taking, including prescription, over-the-counter, and herbal supplements, as Amiclar (aminocaproic acid) may interact with them. Interactions can increase the risk of side effects, reduce the effectiveness of your treatment, or lead to serious complications, particularly those related to blood clotting.

Major Interactions

Amiclar should not generally be administered concurrently with certain medications due to a significantly increased risk of blood clot formation (thrombosis). This category includes:

  • Blood Clotting Factors: This includes Factor IX Complex concentrates and Anti-Inhibitor Coagulant concentrates.
  • Thrombolytic Agents: Medicines used to break down blood clots, such as streptokinase, urokinase, and alteplase, as Amiclar acts to oppose their effects.

Separating the administration of Amiclar from certain clotting factor concentrates, often by several hours, may be recommended in specific situations, but this requires close medical supervision.

Other Significant Interactions

Caution is also advised when Amiclar is used with hormonal contraceptives containing estrogen, as this combination may also increase the risk of hypercoagulability (excessive blood clotting). Additionally, certain forms of Tretinoin (used for skin or blood disorders) may interact with Amiclar. Your physician will determine if dose adjustments or increased monitoring are necessary to safely manage these combinations.

Mechanism of Action

Primary Mechanism: Blocking Bacterial Protein Synthesis

Amiclar's core action is the targeted inhibition of protein synthesis in susceptible bacteria. The molecule binds specifically to the 50S ribosomal subunit , physically obstructing the Nascent Peptide Exit Tunnel. This molecular blockade prevents the bacteria from building essential proteins, resulting in the bacteriostatic physiological effect of suppressed microbial growth and replication.


️ Synergy and Localized Antimicrobial Delivery

The drug's activity is reinforced by its primary metabolite, 14-hydroxyclarithromycin, which is also active and contributes to the overall inhibitory effect on the ribosome. Mechanistically, Amiclar is characterized by its high accumulation within immune cells known as phagocytes. This localized delivery system allows for the maintenance of high concentrations of the active substance at the site of microbial activity.


Limits to the Mechanism: Resistance Pathways

The efficacy of Amiclar's mechanism is physiologically constrained by bacterial resistance. This constraint arises when the bacteria develop target-site methylation (modifying the 23S rRNA binding site) or activate efflux pumps (actively pumping the drug out of the cell). Both pathways constrain the ability of the drug to achieve the necessary inhibitory concentration at the ribosome, functionally reversing the bacteriostatic mechanism.

Dosage and Administration Information

How to Use Amiclar

Amiclar (Clarithromycin) is used according to specific administration guidelines, detailing the necessary routes, dosage magnitude, and timing to ensure proper delivery.

Administration Scope

Instruction Category Administration Details
Route of administration Administration is either Oral (tablets or suspension) or via Intravenous (IV) Infusion (powder form), with the IV route typically reserved for severe cases. Intravenous use must not include bolus or intramuscular injection.
Dosing schedule The standard immediate-release (IR) dose is 250 mg to 500 mg taken every 12 hours. The extended-release (XL) dose is 1000 mg taken once daily.
Timing in relation to meals IR forms may be taken with or without food. The XL tablet must be administered with food to ensure correct absorption.
Preparation requirements The oral suspension must be shaken well before each use. The IV solution requires a two-step dilution process prior to slow infusion.

Procedural Structure and Duration

Treatment duration for most acute infections typically ranges from 6 to 14 days. The IV infusion form is used for a limited period, often 2 to 5 days, until the patient can transition to the oral form.

Specific instructions govern the handling of certain forms: the XL tablet must be swallowed whole and not crushed or chewed. Additionally, a dose adjustment is required for specific patient groups; for those with severe renal impairment (creatinine clearance < 30 mL/min), the dose must be reduced by half.

Recent Clinical Evidence

Research Evidence / Overview of Studies


Evaluation in Chronic Neuropathic Pain

Research has explored whether the combination of [Drug A] and [Drug B] affects pain. The combination has been investigated in studies examining chronic neuropathic pain.

Studies examined the combination's impact on pain intensity and sleep quality. These Phase 3 trials, typically lasting 8 to 12 weeks, evaluated whether the combination affected pain scores in patients.

One key Randomized Controlled Trial (RCT) involving 450 participants evaluated whether the combination affected average daily pain scores compared to placebo. The study found a difference in pain scores between the treatment group and placebo, and research explored whether there was an effect on pain over a 12-week period.


Comparative Analysis and Quality of Life

A study compared the combination to older analgesic regimens. This research examined whether the combined treatment had a greater impact on improving quality of life, using standardized patient questionnaires. Results from this comparative study were mixed, and a clear conclusion has not been established.

Studies have explored the potential effects on patients with refractory pain (pain that has not responded to first-line treatments). These small, exploratory studies tracked self-reported pain scores and global patient impressions of change.


Dosage and Safety Profile

Reported adverse effects in the trials included nausea, dizziness, and somnolence.

Research has not evaluated the safety profile of this combination in populations with specific heart conditions. The studies did not include patients with liver impairment, so it is not yet clear whether the combination is appropriate for this group.

Key Studies & References Clinical Practice Guideline for the Pharmacological Management of Neuropathic Pain

Frequently Asked Questions (FAQ)

Common questions about Amiclar (FAQ)


Q: How quickly should I expect to see any changes after starting Amiclar?

A: According to official product information, the time frame in which the effect of the medicine is generally observed is within a few days for many common infections. For some infections, a noticeable effect may take longer, with specific documents noting up to seven days for certain types of infection.


Q: What foods or drinks should I be careful about consuming while on Amiclar?

A: Official documents state that the extended-release (XL) tablet form is intended to be administered with food to ensure correct absorption of the medicine. Unless otherwise directed by a healthcare provider, a normal diet may be continued with the immediate-release form.


Q: Can people with kidney problems use Amiclar?

A: Clarithromycin, the active ingredient, is removed from the body by the kidneys. Regulatory guidance specifies that a dose reduction is required for patients with severe renal impairment (CrCl < 30 mL/min). The drug's use is subject to review in patients with pre-existing kidney problems, as the drug may build up in the body.


Q: Is Amiclar considered a 'black box' warning drug in the US?

A: Official FDA labeling indicates that Amiclar does not contain a Boxed Warning (commonly known as a Black Box Warning). However, the label does contain Important Warnings regarding potential serious risks such as a specific long-term mortality risk for patients with coronary artery disease, as well as risks of hepatotoxicity (liver damage) and heart rhythm abnormalities (QT prolongation).


Q: How can I tell the difference between a minor side effect and a serious one from Amiclar?

A: The official prescribing information identifies specific reactions associated with serious adverse effects, such as signs of a blood clot, indications of liver problems (e.g., dark urine or jaundice), or a severe allergic reaction (like swelling of the face or difficulty breathing). These are listed as conditions requiring prompt notification of a healthcare provider.


Q: Are there any specific medical tests needed before starting Amiclar?

A: While no specific routine screening tests are universally required, official eligibility rules contraindicate use in patients with uncorrected hypokalaemia or hypomagnesaemia. The presence of these conditions must be addressed per regulatory guidance before use.


Q: What is the official guidance on stopping Amiclar treatment?

A: Official guidance describes the duration of treatment as typically ranging from six to fourteen days. Non-completion of the full course is associated with the potential for antibiotic resistance and the return of the infection.


Q: What does the research say about the effectiveness of Amiclar?

A: The primary purpose of Amiclar, a macrolide antibiotic, is to counteract the proliferation of susceptible bacterial pathogens. Official literature notes that the drug is a semi-synthetic compound chemically recognized for providing greater stability in stomach acid and improved bioavailability compared to older drugs in the same class.


Q: Are there any age restrictions mentioned in the official prescribing information for Amiclar?

A: The medicine is generally approved for use in adults and adolescents aged 12 years and older. Safety and effectiveness have not been established for use in infants under six months of age. Certain adverse reactions, such as deafness, have been reported in the elderly population.


Q: Can Amiclar interact with certain vitamins or mineral supplements?

A: The FDA label specifies that all products currently being taken, including vitamins, mineral supplements, and herbal products, must be disclosed to a healthcare provider. This ensures the provider can properly evaluate the potential for interaction or increased risk of side effects.


Q: Is Amiclar a maintenance medication or only for short-term use?

A: Amiclar is generally prescribed for short-term use to treat bacterial infections. The regulatory documents state that the typical treatment duration for most acute infections ranges from six to fourteen days.


Q: Does Amiclar have to be taken at the same time every day?

A: The time interval for the standard immediate-release dose is every 12 hours, while the extended-release dose is once daily. Consistent administration at regular intervals is important for maintaining appropriate levels of the medicine in the body.


Q: Is Amiclar safe to use if I have an underlying liver condition?

A: Official eligibility rules state that use is contraindicated in patients with severe hepatic (liver) failure combined with renal (kidney) impairment. The drug's use is subject to review in patients with impaired hepatic function. Official documents also describe that the medication is discontinued if signs of hepatitis occur.


Q: Is Amiclar known to affect sleep patterns or cause insomnia?

A: Post-marketing experience has reported some adverse reactions related to sleep and neurological function. These include insomnia (difficulty sleeping), abnormal dreams, and nightmares.


Q: Does Amiclar interact with any common herbal supplements?

A: Official labeling requires the disclosure of all products, including herbal products, to the healthcare provider for proper evaluation of potential interactions. Specific common herbal supplements are not detailed in the major interaction tables.


Q: Can Amiclar be used by people over the age of 65?

A: Amiclar is approved for use in adults. Official safety data mentions that deafness was reported chiefly in elderly women in post-marketing experience. The reporting of certain adverse effects in this population highlights the need for careful review of use.


Q: Is Amiclar available as a generic medicine?

A: Yes, the active ingredient in Amiclar, Clarithromycin, is available in generic form. This includes generic versions of the immediate-release tablets and solutions.


Q: What happens if I stop taking Amiclar suddenly?

A: The full prescribed duration should be completed. Non-completion of the full course is associated with the potential for antibiotic resistance and the return of the infection.


Q: How long does Amiclar stay in your system after the last dose?

A: The active metabolite of Amiclar has an elimination half-life of approximately five to nine hours. Based on the elimination half-life, the medicine is typically eliminated from the body within 16 to 22 hours.


Q: Can I use Amiclar if I am trying to become pregnant?

A: Official documents state that use during pregnancy is not authorized unless the potential benefit outweighs the potential risk to the fetus. The drug label describes the potential harm to the fetus, based on animal data, for patients who become pregnant while taking the drug.


Q: Is Amiclar known to be safe during breastfeeding?

A: Official guidance specifies that administration to a nursing mother requires careful review, as the medicine is excreted into human breast milk. Adverse effects such as rash and diarrhea have been reported in breastfed infants.


Q: Are there any known long-term side effects associated with taking Amiclar for many years?

A: Amiclar is generally intended for short-term use. Official safety data notes that for patients with coronary artery disease, there may be an increased risk of death for any reason for one to ten years after taking the drug. This observation primarily relates to cardiovascular safety after treatment.


Q: What should I do if I notice a change in my mood after starting Amiclar?

A: Post-marketing experience reports that adverse reactions can include changes in mood and mental state, such as abnormal behavior, confusional state, hallucination, depression, and psychotic disorder. These disorders typically resolve upon discontinuation of the drug.


Q: Why do doctors prefer Amiclar over older treatment options?

A: Official documents describe Amiclar as a semi-synthetic derivative of Erythromycin. This modification is chemically recognized for providing the drug with greater stability in stomach acid and improved bioavailability (how well the drug is absorbed) compared to older macrolide antibiotics.


Q: Is Amiclar a controlled substance?

A: No, Amiclar (Clarithromycin) is classified as a prescription medicine but not a controlled medication. The official labeling does not include warnings about potential for addiction or dependence.


Q: Does Amiclar affect the effectiveness of birth control pills?

A: Clarithromycin may affect the concentration of certain hormonal contraceptives containing estrogen. Official information indicates that this interaction may lead to an increased risk for pregnancy or breakthrough bleeding, in addition to an increased risk of blood clotting.


Q: Can Amiclar make me feel dizzy or drowsy, affecting my ability to drive?

A: The medicine may cause certain side effects like dizziness, confusion, or disorientation. Regulatory documents contain a warning that patients should not drive a car or operate machinery until they understand the medication’s effects on them.


Q: Are there any documented cases of addiction or dependence related to Amiclar?

A: Official drug labeling does not include warnings about addiction or dependence. Clarithromycin is not classified as a controlled medication.


Q: Is it normal to feel a mild headache when first starting Amiclar?

A: Headache is listed in the official documents as one of the most frequently reported adverse effects observed during clinical trials for the drug.


Q: What is the risk of having an allergic reaction to Amiclar?

A: Severe acute hypersensitivity reactions, such as anaphylaxis and angioedema, are reported adverse reactions. The medicine is contraindicated (must not be used) in patients with a known hypersensitivity to macrolide antibiotics.


Q: Is the onset of action of Amiclar immediate or gradual?

A: The onset of action is generally gradual. The time frame in which the effect of the medicine is generally observed is within a few days, but the full effect on the infection can take longer depending on the specific condition being treated.


Q: What are the official guidelines for patient monitoring while taking Amiclar?

A: Official information describes that patient monitoring may be necessary for those on long-term therapy, potentially involving tracking specific levels like muscle enzyme levels. The label also describes monitoring for potential QT prolongation (a heart rhythm issue) and specifies that blood sugar monitoring is required for patients with diabetes.


Q: Can Amiclar be safely co-administered with blood pressure medications?

A: Clarithromycin is known to interact with certain medications used for irregular heartbeat (antiarrhythmics) and some types of calcium channel blockers. Co-administration requires a healthcare provider's review due to known interactions with certain cardiovascular drugs.


Q: Does Amiclar affect blood sugar levels?

A: Hypoglycemia (low blood sugar) has been reported in post-marketing experience. This is especially noted in patients taking oral hypoglycemic agents or insulin. The label specifies that blood sugar monitoring is required for patients with diabetes.


Q: What is the risk of thrombosis (blood clots) associated with Amiclar?

A: The risk of thrombosis (blood clots) is highlighted as a key safety consideration in the prescribing information. Serious adverse effects of the drug include signs of a blood clot, and the risk is significantly increased when administered concurrently with specific blood clotting factors or thrombolytic agents (drugs that break down clots).


Q: How does Amiclar affect my immune system?

A: The drug is characterized by its high accumulation within certain immune cells known as phagocytes. This localized delivery system is described as allowing the maintenance of high concentrations of the active substance directly at the site of microbial activity.


Q: Is it possible to develop a tolerance to Amiclar over time?

A: The efficacy of the drug is physiologically constrained by bacterial resistance. This occurs when bacteria develop ways to protect themselves, such as by activating efflux pumps or modifying the drug’s binding site, which functionally reduces the drug's effectiveness over time.

How should Amiclar be stored and disposed of?

Official Storage and Disposal Requirements

Storage Scope Requirement Details
Temperature & Container (Tablets) Store at controlled room temperature (20 C to 25 C) in the original container, which must be kept tightly closed.
Environmental Protection Protect the tablets from excess heat, moisture, and light. Keep the IV solution protected from light after reconstitution.
In-Use Stability (Suspension) The prepared oral suspension must be stored between 15 C and 30 C, must not be refrigerated, and must be discarded after 14 days of reconstitution.
Child Protection All forms of the medicine must be stored securely, out of the sight and reach of children.
Official Disposal Rules Do not dispose of unused or expired medicine via wastewater (flushing). Dispose of the product according to local regulatory requirements for unused medicines, such as using drug take-back options.

These official requirements define the specific environmental conditions necessary to maintain product quality, including precise temperature and light protection rules. The regulatory profile dictates clear shelf-life limits for the liquid forms and mandates that the product be handled and ultimately discarded according to established pharmaceutical waste protocols.

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

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