It will not work against infections caused by viruses such as colds or the flu.Before you take Curam Duo/Curam Duo ForteWhen you must not take itDo not take this medicine if you have an allergy to:amoxycillin or potassium clavulanate, the active ingredients, or similar types of antibiotics (e.g. penicillins or cephalosporins) or any of the inactive ingredients mentioned at the end of this leaflet,