Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Interventional
Official Title: Efficacy and Safety of Combined With Andrographolide Sulfonate on the Basis of Conventional Therapy in Patients With Acute Exacerbation of Chronic Bronchitis: a Randomized, Single Blind, Placebo-contr
Brief Summary: A multicenter,randomized,single-blind, placebo-controlled,phase 4 clinical trial to evaluate the efficacy and safety of andrographolide sulfonate in patients with acute exacerbation of chronic bronchitis