Updated unlicensed medicines leaflet
Most medicines used in the UK have a licence that says exactly how the medicine should be used. However, this licence may not include use in children, or in a particular illness or condition. This leaflet explains what we mean by the unlicensed use of a medicine, why the use of many medicines in children is unlicensed, and when it is considered safe and acceptable to use unlicensed medicines.
You can read the leaflet here: http://www.medicinesforchildren.org.uk/unlicensed-medicines/.