The goal of this clinical trial is to learn if NRICM102 (a Traditional Chinese Medicine) works to treat community-acquired pneumonia (CAP) in adults when added to standard antibiotic therapy. It will also learn about the safety of NRICM102. The main questions it aims to answer are:
1. Does NRICM102 help participants reach clinical stability faster compared to placebo?
2. What medical problems do participants have when taking NRICM102?
Researchers will compare NRICM102 to a placebo (a look-alike substance that contains no drug) to see if NRICM102 works as an add-on treatment for community-acquired pneumonia.
Participants will:
1. Take NRICM102 or a placebo (2 sachets, 3 times daily) in addition to standard intravenous antibiotic treatment for 7 days
2. Be hospitalized and visited by the study team on Day 1, Day 4, and Day 8 for vital sign monitoring, symptom assessments, laboratory tests, and chest X-ray examinations
3. Be contacted by telephone on Day 30 to check if they were readmitted to the hospital after discharge