Elderflower has antiviral properties, especially against influenza, making it beneficial during cold and flu season. Commonly consumed as 1-2 cups of tea daily, it's gentle on the stomach. However, those on diuretics or blood thinners should avoid it due to potential enhanced effects. A holistic wellness brand saw a 25% sales increase by promoting elderflower's benefits during flu season, highlighting the market's growing interest in natural remedies.