Too much vitamin B2 side effects include increased urine frequency, diarrhea, allergic reactions like hives, difficulty breathing, and swelling of the tongue or face. Vitamin B2 will also cause the harmless side effect of turning your urine to a yellow-orange color. Medication interactions associated...
while anyone with a tendency for iron overload would need less Vitamin B1, but much more Vitamin B2. Some of those suffering from hypoadrenalism (Addison's disease) would benefit from extra Vitamin B1 and/or choline for their sodium-raising properties, while sodium-sensitive ...