Moducren tablets
WHAT ELSE SHOULD YOU KNOW ABOUT TAKING YOUR TABLETS?
You should check with your doctor before taking ‘Moducren’ if:A surgeon has destroyed (sic!) one of your nerves in order to either improve the blood supply to a limb or relieve chronic pain. This operation is called a sympathectomy.
http://xpil.medicines.org.uk/ViewPil.aspx?DocID=5926