The answer appears to be yes and no. There are some interesting National Institutes of Health studies on various natural supplements showing them to be effective antivirals.
And research points to CBD's effects across multiple pathways that impact immunity and, potentially, viral infection, according to an NBC news report that found:
1. Endocannabinoids (the pathways where CBD operates) directly affect viral replication and ability to cause disease.
2. CBD aids in select