biotin
Biotin can be problematicniacin (B3)
Niacin (vitamin B3) can be problematic.
Caution
May cause symptoms in more sensitive people. Track your own reaction.
Niacin, also known as vitamin B3, can trigger symptoms similar to histamine intolerance in sensitive individuals, such as skin flushing and a sensation of heat. Although it is not a direct source of histamine, its effects can be mistaken for histamine intolerance.
Safer alternatives
Suitable
Folic acid
L-ascorbic acid (E300)