Bye Bye Vi include powerful herbs like olive leaf, astragalus, and echinacea, each known for their immune-supporting properties. Olive leaf contains oleuropein, which has shown antiviral effects, while astragalus is traditionally used to strengthen the immune system and improve resilience against infections. Echinacea, another popular herb, is widely recognized for its ability to reduce symptoms and duration of viral illnesses, especially when taken at the onset of symptoms.