Cemine

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Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

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

Overview of Cemine

Property Description
Active ingredient Cetirizine Hydrochloride
Form Oral solid and liquid preparations
Pharmacological class Second-generation H1-receptor antagonist
Common use Management of allergic conditions
Origin Synthetic compound

What is Cemine and its Core Composition?

Cemine is a medicinal product based on the active pharmaceutical ingredient, Cetirizine Hydrochloride, a synthetic compound derived from hydroxyzine. This medicine is intended for administration via the oral route and is commonly supplied as single-ingredient oral solid preparations and various oral liquid preparations. Cemine is frequently positioned for over-the-counter (OTC) availability in certain markets, providing accessibility for common self-managed allergy scenarios.

The foundational composition of Cemine centers on Cetirizine Hydrochloride, which is chemically defined as a phenylmethylpiperazine derivative. The product’s identity is rooted in this single active substance, formulated with suitable excipients to facilitate systemic absorption.

Cemine's Pharmacological Class and Differentiation

Cemine is categorized pharmacologically as an antihistamine and belongs to the definitive class of second-generation H1-receptor antagonists. This classification is clinically recognized for its specific receptor-blocking function.

Its specific identity as a second-generation agent means it functions as a peripheral H1-blocker, a characteristic that limits its capacity to penetrate the blood-brain barrier. This specialized activity helps distinguish it from older antihistamines, which typically exhibit less selectivity. This modern structure minimizes generalized effects often associated with less specific compounds.

General Therapeutic Purpose of the H1-receptor Antagonist

The primary therapeutic purpose of Cemine is the alleviation of discomfort and the management of physiological effects associated with allergic conditions. As an H1-receptor antagonist, the drug’s general role is to effectively interrupt the action of histamine, the key chemical mediator released during hypersensitivity reactions. This mechanism allows the product to moderate the body’s overreaction to allergens, serving as a targeted resource for controlling allergy-driven symptoms, such as those that manifest during seasonal changes.

What side effects are possible with Cemine?

Cemine: Possible Side Effects and Safety Information

This section describes the officially documented adverse reactions and safety characteristics of Cemine (Cetirizine Hydrochloride), as classified by government regulatory authorities.

Adverse reactions are formally categorized by incidence, allowing patients to understand the likelihood of documented effects. Somnolence, Fatigue, Dizziness, Headache, Pharyngitis, Dry mouth, and Nausea are classified as Common side effects, observed in 1/100 to 1/10 patients in clinical trials. Less frequent effects, classified as Uncommon, include Agitation, Paraesthesia, Diarrhoea, and Pruritus.


System-Organ Classes and Serious Reactions

The full spectrum of officially listed adverse effects spans multiple System-Organ Classes. Effects related to the Nervous System (e.g., somnolence, dizziness) and Gastro-intestinal disorders are most frequently noted. Rare or very rare effects involve the Immune system (e.g., Anaphylactic shock), Hepatobiliary disorders (e.g., Hepatic function abnormal), and Nervous System disorders (e.g., Convulsions). These serious reactions are classified in the Rare or Very Rare categories in official labeling.


Safety Considerations and Limitations

Specific cautions are defined in regulatory documents. Caution is advised in patients with predisposing factors for urinary retention and in those at risk of convulsions. Additionally, official labeling includes reports of intense pruritus and/or urticaria occurring after the discontinuation of the medicine, particularly following long-term use. Dose adjustments are required for patients with Renal Impairment.

Overdose and Emergency Response

Official Overdose Manifestations and Risks

The regulatory information for Cemine (Cetirizine Hydrochloride) overdose establishes a profile defined by neurological effects and required emergency actions. Documented manifestations typically include somnolence and drowsiness, although pediatric cases have also reported initial restlessness and irritability. Less common symptoms reported in official overdose cases include headache, nausea, and abdominal pain.

In cases of significant ingestion, severe or life-threatening outcomes have been noted in regulatory review materials. These outcomes include major cardiac effects such as tachycardia and hypotension, as well as severe central nervous system depression leading to seizures or coma.

When to Seek Emergency Help and Management

Authorities mandate that any suspected overdose requires immediately seeking medical attention or contacting a Poison Control Center. Management is defined as symptomatic or supportive treatment, as no known specific antidote for Cemine is available. The official prescribing information also notes that the substance is not effectively removed by dialysis.

Regulatory documents advise increased vigilance for geriatric patients and individuals with renal impairment, as their reduced clearance can prolong drug exposure and increase the risk of sustained overdose effects.

Therapeutic Uses of Cemine

What Cemine Treats: Main Uses and Benefits

Cetirizine is commonly used across conditions presenting with acute or recurrent episodes of allergic discomfort. The medication is considered relevant in clinical settings where supportive symptom management is appropriate and helps ease the overall symptom load.

Cemine is commonly used to help with symptomatic discomfort associated with allergic rhinitis (hay fever) and may be part of symptomatic management for chronic urticaria (hives). It is applied across domains where additional symptomatic support is needed, primarily addressing symptom clusters that may become intense or disruptive, such as sneezing, runny nose, itchy eyes, and persistent skin itching.

“The therapeutic benefit supports patients during difficult episodes by easing distress and helps maintain a sense of stability when symptoms intensify.”

The medication is generally applied in scenarios where short-term symptomatic assistance is needed, often during phases of increased distress or discomfort due to allergen exposure. The overall benefit contributes to easing the symptom load and may assist with maintaining functional stability when symptoms interfere with routine activities.


Quick Fact: Relief for Multi-Site Symptoms Cemine is relevant for managing symptoms that interfere with daily comfort and may be part of symptomatic management, providing supportive relief when manifestations affect multiple areas, including the nose, eyes, and skin.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Eligibility Profile: Who Can and Cannot Use Cemine

This section summarizes the official population eligibility and exclusion criteria as defined in governmental regulatory documents.


Contraindicated Populations (Must Not Use)

Use of Cemine is strictly prohibited in patients who have a known hypersensitivity to any component of the formulation or who have an active infection present at the intended injection site.

Populations Requiring Conditional Use

Individuals with pre-existing conditions that predispose them to generalized muscle weakness, such as myasthenia gravis or ALS, must be assessed with caution. Use in these individuals carries an increased risk of complications due to the potential for the medicine’s effect to spread beyond the injection area.

Age and Reproductive Eligibility

Population Eligibility Status
Pediatric (General) Use Not Recommended (Safety/efficacy not established for all uses).
Pediatric (2-17, Specific Spasticity) Approved for use (Excluding spasticity caused by cerebral palsy).
Pregnancy Caution/Risk of Fetal Harm (Only use if potential benefit justifies risk).
Lactation Use Not Established (Information on presence in human milk is unavailable).

This profile determines that eligibility is constrained by immunological factors, physiological susceptibility to toxin spread, and the completeness of clinical data in specific demographic groups.

What should I know about interactions with other medicines?

Interactions with other medicines and products

This section summarizes officially documented interaction information for Cemine (Cetirizine Hydrochloride) as found in government regulatory documents.

Drug and Substance Interactions

Interaction Type Interacting Product or Category Official Label Statement
Pharmacodynamic Reinforcement CNS Depressants (Medicines) May cause an additional reduction in alertness and performance impairment.
Pharmacodynamic Caution Alcohol (Consumable Product) May lead to additional performance impairment, particularly in sensitive patients.
Pharmacokinetic Modification Theophylline (400 mg daily dose) A 16% decrease in Cemine clearance has been officially observed. The disposition of Theophylline was unaffected.

Interaction-Related Restrictions

Official regulatory documents emphasize specific restrictions and requirements tied to interaction risk or clearance.

  • Procedural Constraint: Discontinuation of Cemine is required for a specified period (e.g., three days) before undergoing Allergy Skin Tests. The antihistamine activity interferes with the diagnostic response, necessitating this wash-out period.
  • Population Restriction: Use of Cemine is officially contraindicated in patients with severe renal impairment (e.g., End-Stage Renal Disease or eGFR < 15 mL/min). This restriction addresses the high risk of increased drug exposure due to severely impaired elimination.

Studies testing the co-administration of Cemine with specific agents, including Ketoconazole, Erythromycin, and Azithromycin, found no evidence of clinically significant interactions as documented in the regulatory data.

Mechanism of Action

How Cemine Works

Cemine's primary function is executed by acting as a competitive antagonist at the Histamine H1-receptors located predominantly in peripheral tissues, including those associated with small blood vessels and sensory nerves. The drug molecule occupies the binding site on the H1-receptor, preventing the attachment of the natural inflammatory mediator, histamine.

This molecular interaction interrupts the early phase of histamine signaling cascades. The resulting blockade modifies the signaling sequences that govern immediate tissue responses, particularly those involving vascular permeability and localized nerve stimulation. By influencing the activity within these peripheral pathways, the drug reduces the histamine-mediated leakage of fluid from capillaries and diminishes the activation of sensory nerve fibers, which produces changes in local physiological conditions.

Dosage and Administration Information

Official Administration Guidelines for Cemine (Cetirizine)

Cemine is an orally administered medication, and official instructions for its use are established to ensure correct dosing. The administration is typically once or twice daily, depending on the patient's age and health status.

Age Group Standard Recommended Oral Dose Frequency
Adults and Adolescents (over 12 years) 10 mg Once daily
Children (6 to 12 years) 5 mg Twice daily
Children (2 to 6 years) 2.5 mg Twice daily

Dosing Adjustments and Special Conditions

  • Kidney Function: Dose adjustments are mandatory for patients with reduced kidney function, as the medication is primarily cleared through the kidneys. For example, in adults with moderate renal impairment (Creatinine Clearance 30–49 mL/min), the recommended dose is reduced to 5 mg once daily. For those with severe impairment (<30 mL/min), the dose must be reduced and the frequency adjusted, or use may be contraindicated in end-stage renal disease.
  • Administration Time: The medicine may generally be taken with or without food, allowing flexibility in the timing of administration. The oral solution should be measured carefully, ideally using the provided dosing cup or a pharmacy measuring device.
  • Missed Dose: If a dose is missed, standard guidelines generally advise taking the missed dose as soon as it is remembered. However, if it is almost time for the next scheduled dose, the patient should skip the forgotten dose and resume the regular schedule, without taking a double dose to compensate.

This structured protocol ensures that the dose is correctly adjusted for age and renal status, maintaining the established standard for safe and correct use.

Recent Clinical Evidence

Cemine: Recent Clinical Evidence

Heart Failure and Long-Term Outcomes

Research has explored whether the medication may affect the long-term prognosis of individuals with chronic heart failure (CHF). Large-scale clinical trials were conducted to evaluate its role as an addition to standard therapies like ACE inhibitors and beta-blockers.

Studies examined the effects of blocking the hormone aldosterone. This blockade was studied for its potential to affect fluid retention and scarring in the heart muscle.

A significant body of research investigated major clinical endpoints. In these studies, the medication was associated with a lower rate of hospitalization and a change in the risk of cardiovascular death over the study period.

Use in Resistant Hypertension

Research also investigated its use in individuals with resistant hypertension—defined as high blood pressure that remains elevated despite maximum doses of three or more anti-hypertensive drugs.

Research focused on its potential role in individuals with difficult-to-control blood pressure, evaluating whether the combination affected blood pressure control in those for whom other therapeutic approaches were insufficient. The findings from these trials suggested an association between the addition of this medication and further decreases in blood pressure.

Diuretic and Mineralocorticoid Properties

The medication has been studied for its actions as a selective aldosterone blocker. Studies have been conducted to evaluate whether this property affects fluid balance and potassium levels when compared to other diuretics.

Some studies compared its outcomes with those of older diuretics, focusing on endpoints such as blood pressure reduction and adverse effect profiles.

Safety Profile and Potential Risks

Studies indicate that high potassium risk is elevated when the medication is combined with other agents that also affect potassium levels, such as certain ACE inhibitors or ARBs.

Studies involving individuals with severe kidney disease often excluded participants or included careful monitoring.

How should Cemine be stored and disposed of?

Official Storage and Disposal Instructions for Cemine

Cemine (Cetirizine Hydrochloride) must be stored strictly according to official regulatory labeling to ensure product integrity.

Requirement Constraint
Temperature Store at room temperature, typically 20 C to 25 C. Do not freeze or expose to excess heat.
Protection Keep away from moisture and direct light.
Container Keep in the original container, tightly closed.
Stability Certain oral solutions have a shelf life after opening of 6 months.
Child Safety Must be kept out of the sight and reach of children.

Disposal: Unused or expired Cemine should be discarded using a drug take-back program or by mixing it with an unappealing substance in a sealed container for household trash. It must not be disposed of in wastewater.

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

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