Guaifenesin Market By Drug Composition (Single-agent Formulations, Combination Formulations), By Purity Level (>99%, 98%-99%), By Formulation (Tablets and capsules, Syrups, Granules/Extended-Release, Others), By Application (Cough Suppressant, Mucolytic Agent, Veterinary Use, Others), By Distribution Channel (Retail Pharmacies, Hospital Pharmacies, Online Pharmacies), Region and Companies – Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2025-2034