Overview
Loratadine is a second-generation antihistamine widely used to treat allergic conditions such as hay fever and chronic urticaria. Unlike first-generation antihistamines, it does not typically cause drowsiness, making it a preferred choice for daytime use. It works by blocking histamine H1 receptors, thereby reducing allergic symptoms. Loratadine was first approved by the FDA in 1993 and has since become a staple in allergy treatment. It is available in various forms, including tablets, syrups, and orally disintegrating tablets, catering to different patient needs. Its long duration of action allows for once-daily dosing, enhancing patient compliance.
Physical and Chemical Properties
Loratadine is a white to off-white crystalline powder with a molecular weight of 382.88 g/mol. It has a melting point of 134-136°C and is slightly soluble in water but more soluble in organic solvents like methanol and ethanol. These properties make it suitable for formulation into various pharmaceutical dosage forms. The compound is stable under normal storage conditions but should be protected from light and moisture to prevent degradation. Its selective action on peripheral H1 receptors minimizes central nervous system effects, contributing to its non-sedating profile.
Main Applications
Loratadine is primarily used to treat allergic rhinitis, characterized by symptoms like sneezing, runny nose, and itchy eyes. It is also effective in managing chronic idiopathic urticaria, providing relief from hives and itching. Its non-sedating nature makes it suitable for use in adults and children over two years of age. In addition to its standalone use, loratadine is sometimes combined with decongestants like pseudoephedrine to address nasal congestion. Its versatility and safety profile have made it a popular choice in both prescription and over-the-counter allergy medications.
Safety and Storage
Loratadine is generally well-tolerated, with side effects being mild and infrequent. Common adverse effects include headache, dry mouth, and fatigue. Serious side effects are rare but may include tachycardia or hypersensitivity reactions. Patients with severe liver impairment should use it with caution. Proper storage is essential to maintain the drug's efficacy. Loratadine should be kept in a cool, dry place, away from direct sunlight and moisture. Bulk pharmaceutical suppliers should ensure packaging is airtight and compliant with regulatory standards to prevent contamination or degradation.
B2B Procurement Guide
When procuring loratadine in bulk, B2B buyers should prioritize suppliers who adhere to Good Manufacturing Practices (GMP). A Certificate of Analysis (COA) should be requested to verify purity and quality. Buyers should also consider the supplier's reputation, delivery timelines, and compliance with international regulatory standards. Price negotiations should factor in order volume, purity requirements, and packaging specifications. For reference, prices typically range from $50 to $100 per kg, depending on these variables. Long-term contracts may offer cost advantages, but buyers should ensure flexibility to adapt to market changes.