Loratadine capsules(Loranox) are a widely used over-the-counter medication, belonging to the second generation of antihistamines. The main ingredient is loratadine, and it also contains some excipients such as starch, lactose, magnesium stearate, etc. These excipients help with the shaping, stability, and administration of the drug. After the human body comes into contact with allergens, the immune system releases chemicals such as histamine.
Histamine binds to histamine receptors on the cell surface, causing a series of allergic symptoms such as sneezing, runny nose, nasal congestion, skin itching, rash, etc. Loranox can selectively block peripheral H1 receptors, competitively inhibit the binding of histamine to H1 receptors, thereby preventing histamine from exerting its biological effects and achieving the goal of relieving allergic symptoms.
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Additional information of chemical compound:
Products Description
Loratadine COA
Loratadine capsules are mainly used to relieve symptoms caused by a variety of allergic diseases and have a wide range of clinical applications. With its efficient and mild anti-allergic effect, it has become one of the preferred drugs for the treatment of various allergic diseases. The specific indications are as follows:
(I) Allergic Rhinitis
It is one of the most common and primary indications of the product. The drug delivers satisfactory therapeutic effects for both seasonal allergic rhinitis and perennial allergic rhinitis, applicable to children, adolescents, adults and the elderly (appropriate dosage forms and doses shall be selected according to age groups).
Seasonal allergic rhinitis, also known as hay fever, is mainly triggered by seasonal allergens such as pollen and catkins in spring, as well as artemisia and ragweed in autumn.It has an obvious seasonal onset, predominantly occurring from March to May in spring and August to October in autumn.
Typical symptoms include frequent sneezing, profuse watery nasal discharge, nasal congestion and nasal itching. Some patients also develop ocular allergic symptoms such as itchy eyes, lacrimation, conjunctival congestion and eyelid edema. In severe cases, it interferes with work, study and sleep, and even leads to poor concentration and memory decline.Perennial allergic rhinitis is induced by year-round allergens including dust mites, pet dander, mold, cockroach excreta and indoor dust. Its symptoms persist for more than 4 weeks on average, presenting as recurrent nasal congestion, nasal itching, sneezing and rhinorrhea.
Long-term episodes may cause complications such as sinusitis, otitis media and nasal polyps, seriously impairing nasal health and quality of life.
Loranox precisely blocks histamine H1 receptors, effectively relieving nasal mucosal congestion, edema and inflammatory reactions, and rapidly alleviating the above allergic symptoms to improve nasal ventilation and comfort. It is especially suitable for patients with perennial allergic rhinitis requiring long-term symptom control. Regular long-term administration rarely induces drug resistance, stabilizes the condition, reduces attack frequency, and helps patients restore normal life. Clinically, it is often combined with intranasal glucocorticoids and nasal decongestants to enhance curative efficacy, particularly for patients with moderate to severe symptoms.
(II) Urticaria
Urticaria is a common cutaneous allergic disease, classified into acute and chronic types based on disease course. Its pathogenesis is closely associated with systemic allergic reactions. Common predisposing factors include food allergies (seafood, milk, eggs, nuts, etc.), drug allergies (penicillins, cephalosporins, antipyretic analgesics, etc.), environmental allergen irritation (pollen, dust mites, cold air, ultraviolet rays, etc.), infections (viral and bacterial infections), as well as psychological factors and endocrine disorders.
The main clinical manifestation is the emergence of wheals of varying sizes and irregular shapes on the skin, presenting red, pale red or pale white color with clear or blurred boundaries, accompanied by intense pruritus. Wheals subside spontaneously within hours without residual marks but are prone to recurrent attacks, causing great suffering to patients.
Acute urticaria has an abrupt onset, developing within minutes to hours after allergen exposure.
Some patients present severe symptoms accompanied by gastrointestinal discomforts such as abdominal pain, diarrhea, nausea and vomiting, and even life-threatening severe allergic reactions including dyspnea, chest tightness and laryngeal edema if left untreated timely.
Chronic urticaria is defined as a disease course over 6 weeks with at least 2 weekly episodes. Its recurrent symptoms are difficult to cure, severely affecting patients' quality of life and mental health; some patients develop anxiety and depression due to persistent itching.
Loratadine capsules are effective in treating acute and chronic urticaria. It rapidly inhibits histamine release, relieves skin pruritus and wheals, and reduces recurrence frequency. For acute urticaria, it quickly controls symptoms to prevent deterioration and buy time for subsequent treatment. For chronic cases, regular long-term medication stabilizes the condition and lowers relapse rates.
With no obvious sedative effect, it does not interfere with daily work, study or sleep, making it more suitable for long-term use compared with first-generation antihistamines. Clinically, for severe chronic urticaria, it can be combined with other second-generation antihistamines or leukotriene receptor antagonists for synergistic treatment to further improve efficacy.
(III) Other Allergic Skin Diseases
In addition to urticaria, the product are widely used to relieve pruritus caused by various other allergic skin diseases, with extensive clinical applications including eczema, contact dermatitis, atopic dermatitis, pruritus, drug-induced dermatitis and neurodermatitis.
These diseases have complex etiologies, mostly associated with allergen exposure (cosmetics, detergents, pollen, dust mites, metal ornaments, chemical raw materials, etc.), autoimmune factors, genetic factors and environmental factors. Though clinical manifestations vary, skin pruritus is the core symptom, often accompanied by erythema, papules, blisters, desquamation, erosion and exudation.
Severe cases suffer from disrupted sleep, impaired daily activities and even secondary skin infections.
Eczema is a chronic inflammatory skin disease with a prolonged and recurrent course, manifested as erythema, papules and blisters with severe pruritus, and erosion and exudation in severe cases. Contact dermatitis refers to inflammatory reactions triggered by skin contact with external substances, presenting erythema, papules and itching at the contact site, with blisters and erosion in severe cases.
Atopic dermatitis is mostly related to heredity and allergic constitution, commonly seen in children, characterized by dry skin, pruritus and erythema, as well as exudation and crusting in advanced stages. Drug-induced dermatitis is a cutaneous allergic reaction caused by oral or contact administration, presenting generalized erythema, papules and pruritus with systemic symptoms in severe cases.
By inhibiting histamine release, loranox alleviates skin inflammatory responses and pruritus to relieve clinical discomforts. It is frequently combined with topical medications such as glucocorticoid ointments, calamine lotion and moisturizers for synergistic therapeutic effects, enhancing efficacy, shortening disease course, relieving obvious itching, improving skin conditions and restoring skin health.
(IV) Other Allergic Diseases
Furthermore, it can alleviate discomforts induced by other allergic diseases, with wide application scenarios covering allergic reactions of multiple body systems.
In terms of ocular allergies, it relieves itchy eyes, lacrimation, conjunctival congestion, foreign body sensation and eyelid edema caused by allergic conjunctivitis, reduces ocular discomfort and prevents secondary eye infections from frequent eye-rubbing. It is particularly effective for seasonal allergic conjunctivitis induced by pollen, dust mites and other allergens.
For respiratory allergies, it serves as an adjuvant therapy for allergic asthma - a chronic respiratory disease characterized by airway hyperresponsiveness closely linked to allergic reactions. Asthma attacks present cough, wheezing, chest tightness and dyspnea. Loranox mitigates airway allergic reactions during attacks, relieves cough and wheezing, and acts synergistically with anti-asthma medications such as inhaled glucocorticoids and bronchodilators to improve respiratory function and reduce asthma frequency.
For mild daily allergic conditions, it effectively relieves skin itching and swelling caused by mosquito bites. With mild and long-lasting efficacy, it rapidly alleviates local discomforts and prevents skin damage and infection from scratching, making it an essential household standby medicine.
Additionally, it can be used as adjuvant treatment for other allergic diseases such as Henoch-Schönlein purpura - an inflammatory vascular disease closely associated with allergic reactions, manifested as skin purpura, arthralgia and abdominal pain. Loranox relieves systemic discomforts induced by allergic reactions, assists in condition control and promotes patient recovery.
Loratadine capsules are a widely used second-generation antihistamine drug, mainly used to alleviate symptoms of allergic diseases such as allergic rhinitis and chronic urticaria. It occupies an important position in the pharmaceutical market due to its significant therapeutic effect and relatively small side effects. Understanding the production method of it is of great significance for ensuring drug quality, meeting clinical medication needs, and promoting the development of the pharmaceutical industry.
Preparation before production
Selection and inspection of raw materials and auxiliary materials
Main drug Loranox
Quality standard: It should comply with the provisions of the Chinese Pharmacopoeia or relevant international pharmacopoeias, and the purity is generally required to be above 98.0%. The appearance should be white or off white crystalline powder, odorless and tasteless.
Inspection items: including characteristics, identification, related substances, content determination, etc.
Identification can be achieved through methods such as infrared spectroscopy and high-performance liquid chromatography.
Strict control of impurity content is required for substance inspection to ensure that it does not exceed the prescribed limit; Accurate determination of the content of loranox is required to ensure that it meets the requirements of the labeled amount.
Auxiliary materials
Starch: commonly used as a filler to increase the volume and weight of capsule contents. White, odorless, and impurity free starch should be selected, with a moisture content generally not exceeding 12%. The inspection items include characteristics, moisture, ash content, etc.
Lactose: It is also a commonly used filler with good fluidity and compressibility. It should comply with the quality standards stipulated in the pharmacopoeia, and the inspection items include properties, acidity, sulfate, heavy metals, etc.
Magnesium stearate: As a lubricant, it can prevent particles from adhering to the surface of the die during the tablet pressing process, ensuring smooth demolding of the tablet. White, odorless and tasteless magnesium stearate should be selected, and its content should comply with regulations. The inspection items include properties, heavy metals, arsenic salts, etc.
Production process
Pre treatment of raw materials and auxiliary materials
Crushing and screening of loranox: The raw material of loranox is crushed in a universal crusher, and the crushed material is screened through a vibrating screen to select particles with the required particle size (generally required to pass through an 80-100 mesh screen) for later use.
Processing of excipients: Starch, lactose and other excipients also need to be crushed and screened to make their particle size similar to that of loranox granules. Magnesium stearate generally does not need to be crushed, but it needs to be sieved to remove clumps.
Mix
Dry mixing: Mix the sieved loranox granules with appropriate amounts of starch, lactose, and other excipients in a certain proportion into a V-type mixer. Turn on the mixer and mix at an appropriate speed for 15-20 minutes to achieve initial and uniform mixing of the materials.
Wet mixing: Prepare an appropriate amount of adhesive, such as 10% starch slurry.
Slowly add the adhesive to the dry mixed material, while starting the wet granulation machine for stirring and granulation. During the feeding process, attention should be paid to controlling the feeding speed and the amount of adhesive used, so that the material can be evenly wetted and form moderately sized wet particles. The general wet granulation time is 3-5 minutes.
Granulation
After wet granulation is completed, transfer the wet particles to a hot air circulating oven for drying. The drying temperature is generally controlled at 60-70 ℃, and the drying time depends on the moisture content of the wet particles and the performance of the drying equipment, usually 2-3 hours. Regularly flip the material during the drying process to ensure even drying. The moisture content of the dried particles should be controlled between 3% and 5%.
Whole grain
Dry the particles and use a swing granulator to round them. Choose a suitable sieve (usually 14-20 mesh) to remove particles that are too large or too small, making the particle size more uniform. The whole particle should be loose and free of lumps.
Total mixing
Add the whole granules and magnesium stearate to a V-type mixer for total mixing, with a mixing time of 10-15 minutes. The purpose of blending is to evenly distribute magnesium stearate on the surface of the particles, providing lubrication and further ensuring the uniformity of the material.
Capsule filling
Selection of capsule shell: Choose the appropriate capsule shell based on the specifications and loading requirements of loratadine capsules. The quality of the capsule shell should comply with relevant standards and be free from defects such as damage and deformation.
Filling operation: add the total mixed particles into the hopper of the automatic capsule filling machine, adjust the filling amount and filling speed, and start the equipment for capsule filling. During the filling process, it is necessary to regularly check the differences in capsule filling volume and appearance quality to ensure compliance with regulatory requirements.
package
Aluminum plastic blister packaging: Place the filled capsules into the mold of the aluminum plastic blister packaging machine, and seal the capsules between the aluminum foil and plastic blister through heating, pressure, and other processes. During the packaging process, attention should be paid to controlling the heat sealing temperature and pressure to ensure the sealing of the packaging.
Outer packaging: Put the capsules packaged in aluminum-plastic blister packs into paper boxes or plastic bottles, label them with the drug name, specifications, batch number, expiration date, and other information. The outer packaging should be sturdy, aesthetically pleasing, and able to protect the medication from damage.
FAQ
What is loratadine good for?
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loranox is a widely used, over-the-counter (OTC) second-generation antihistamine designed to treat allergy symptoms, including sneezing, runny nose, itching of the nose or throat, and itchy/watery eyes, often providing 24-hour, non-drowsy relief. It is commonly used for seasonal allergies (hay fever) and hives, usually taken once daily by mouth.
Is loratadine the same as Zyrtec?
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loranox (commonly branded as Claritin) and Zyrtec (cetirizine) are not the same, though both are effective, second-generation, over-the-counter antihistamines for allergy relief. Zyrtec acts faster (within 1 hour) and is often more potent but more likely to cause drowsiness than the usually non-drowsy loratadine.
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