ELDERBERRY JUICE is very good and a strong anti-viral herb food, the only one known. It was researched by an Israeli herbalist and found to be the one food that actually exerts an anti-viral influence. Its use was developed for Israeli troops in battle. It is great for allaying a cough or cold during the flu season. First sign of a sniffle try elderberry syrup called Sambuco©, very alkaline. Avoid the oxalate rich whole fruit, which is detrimental PKD/PLD.