I wanted to use a supplement other then the only guinea pig vitamin c drops out there, and wanted to insure for sure that what he was getting for vitamin c was 100% certified organic. Since Oasis Vita Drops High Potency Pure C Guinea Pig Supplement doesn't say it is... I would hope that it was but just to be on the safe side. Obviously I would have to measure out the right amount for his vitamin c manually but was wondering if all the ingredients were safe.