Answer
Not for the selected product. Its registered role is symptom relief based on traditional use; prevention studies across varied products have not shown a clear clinically important benefit.
Sources for this answer
- Care Echinacea Cold & Flu Relief Tablets / EchinEeze Echinacea Tablets — Current selected SmPCemc · Summary of Product Characteristics
- PubMedPubMed · Reputable Web
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.