A herbal cure for the common cold?

Alan, a 30-year-old office worker, looked miserable in my rooms with a runny nose, cough and sore throat.

He had a run-of-the-mill viral upper respiratory tract infection. He said his partner had suggested he try Kaloba (Pelargonium sidoides) to help him recover. But does it work for the common cold?

CLINICAL QUESTION

Is Pelargonium sidoides extract (Kaloba) an effective treatment (symptom severity or length of illness) for the common cold in well adults?

What does the research evidence say?

Step 1: The Cochrane Library
The Cochrane Library contains a 2013 systematic review and meta-analysis that examines the use of P. sidoides extract for acute respiratory tract infections. Bullseye!1

Step 2: Trip Database
Are there any newer systematic reviews or new

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