If I was consuming my blends proactively for immune boosting, while also helping to bring down any existing pathogen load I was carrying (like EBV, CMV, SHINGLES, STREP etc), I would be sure to consume 2 litres of thealing herbal infusions daily (rotating through the blends.) However, if I was actively battling an strain of the flu on top of everything else my body was already dealing with, I would drink 1 litre of each of the 5 flu blends daily. Hydration while fighting the flu is a key to my flu-healing strategy.