Ascorbic acid (vit. C synthetic)
Citric acid (E330)
Caution
May cause symptoms in more sensitive people. Track your own reaction.
Industrial citric acid (E330) is produced by fermentation of Aspergillus niger. This fermentation origin makes it a histamine liberator. It is added to lemonades, yogurts, jams and semi-finished products.
Safer alternatives
Suitable
Folic acid
L-ascorbic acid (E300)