The most common side effects with ECALTA (seen in between 1 and 10 patients in 100) are coagulopathy (problems with blood clotting), convulsion (fits), headache, diarrhoea, vomiting, nausea (feeling sick), increased blood creatinine levels (a marker of kidney problems), rash, pruritus (itching), hypokalaemia (low levels of potassium in the blood), flushing, and raised blood levels of alanine aminotransferase, alkaline phosphatase, aspartate aminotransferase, bilirubin and gamma- glutamyltransferase (markers of liver problems).