Allergic reactions to capsicum may occur. People should stop eating eggs with capsicum-based colouring and seek emergency medical attention if they experience symptoms of a serious allergic reaction including difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives.
Other less serious side effects have also been reported such as upset stomach; migraine; heartburn; diarrhea; or burning sensation in the mouth or throat.
Use of Capsicum is not recommended for pregnant women.
Some people experience breathing problems, tightness in the chest, swelling of the mouth, tongue or throat. A skin rash or hives may occur.