Use as a BACKUP Supplement Only
This supplement is a good BACKUP to what you are already taking to prevent getting the flu and keeping your immune system healthy.  I say that because these aren't ordinary times with Covid-19, and extra supplements are necessary.  I like some of ingredients in this supplement but wish the vitamin C had been liposomal and not ascorbic acid.  The zinc is in the form of zinc oxide, which is the least bioavailable.  Most of it won't be utilized by your body.  All the other ingredients are good and I always like to see Elderberry included since it is a powerful anti-oxidant and virus buster.  I take over 1500 mg liposomal vitamin C each day plus extra zinc (citrate/gluconate) so I don't think the 180mg of vitamin C (in this supplement) will do anything to help your immune system fight off Covid.  I'm giving it 3 stars and think that is being generous.
Rating: 3 stars