Sinudrin Syrup contains Phenylpropanolamine (12.5mg per 5ml) and is used to relieve nasal congestion associated with colds, allergies, or sinusitis. It works as a decongestant by narrowing the blood vessels in the nasal passages, which reduces swelling and allows for easier breathing. This product comes in a 60ml bottle. Always follow the recommended dosage and consult a healthcare provider before use.