Global Antihistamines Market Analysis By Product Type (H-1 Blockers, H-2 Blockers), By Type (Prescription-based, Over-the-counter), By Dosage Forms (Tablets, Capsules, Liquids, Other Dosage Forms), By Route of Administration (Oral, Parenteral, Topical), By Indication (Allergies, Urticaria, Dermatitis, Other Indications), By Distribution Channel (Hospital Pharmacies, Retail Pharmacies, Online Pharmacies) By Region and Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2024-2033