Medbron GPC Syrup (50mg Guaifenesin, 6.25mg Phenylpropanolamine HCl, 1mg Chlorphenamine Maleate per 5ml) is a combination syrup used to relieve cough, nasal congestion, and allergy symptoms. It works by loosening mucus, reducing congestion, and relieving sneezing, itching, and runny nose. Each 60ml bottle provides effective relief from cold, flu, and allergy-related respiratory issues.