I always keep tonic water with quinine at the house as my late husband was a Vietnam veteran who had yearly recurring episodes of malaria. He could feel it coming on and drank tonic water for a couple days to ward it off. BUT i recently found a "aloe life beverage" called Neuro-Immune Health Protector with heavy Vitamin D, zinc, vitamin C, selenium. Like it was made to use with quinine water! In the pharmacy area with all those nutrition drinks.