1. http://www.mhra.gov.uk/home/groups/par/documents/websiteresources/con2032434.pdf (15/01/2017).
2. The Complete Drug Reference;Martindale,2009
3. Clarke's Analysis of Drugs and Poisons in Pharmaceuticals, Body Fluids and Postmortem Material;Moffat,2004
4. The Merck Index, an Encyclopedia of Chemicals, Drugs, and Biologicals;Budavari,2001
5. British Pharmacopoeia;Commission,2001