Pharmaceuticals – Powder ReportExtemporaneous preparations are medicines which are not UK licensed, these medicines can be prescribed by prescribers such as GB and dentists for a particular patient to be prepared in the pharmacy by a pharmacist registered. These medicines are prepared under exemption from the Medicines Act 1968, so no manufacturing license is required. Extemporaneous medicines, also known as compounding, have a shelf life of 7 days, are supervised or personally prepared by a pharmacist and must be dispensed on an authorized, dated, signed and named prescription to the patient. These products are manufactured using British Pharmacopoeia standards and must comply with local quality assurance audit. These products must be checked by a licensed pharmacist as a final check before sending the product to the patient. The sources of the formulas could also be the specific Martindale or GP formula or come from a journal available on the websites. Extemporaneous preparations are commonly called (special), there are two types of risks in extemporaneous dispensing, the first is the risk to the patient which includes errors, cross-contamination, lack of clinical studies, no or poor stability data and suitability of excipients , for example lanolin or sugar-free. The second type of risk is the distributor risk, called COSHH, you need to wear glasses, gloves and masks to minimize the risk. Some activities should be performed in the fume hood for safety reasons because some ingredients may have a noxious or unpleasant odor, for example Cade oil has an empyreumatic odor. Specials: There are different views on the definition of specials, a special can be said to be a mixture of products or anything that does not have a UK marketing authorisation. Special offers may be imported items licensed in another...... middle of paper...... erroneous[accessed 20 March 2014]. Participate in the Formulary Committee. (2014) British National Formulary.67th ed.London: BMJ Group and Pharmaceutical Press; 2014]MHRA (2012) Standard Operating Procedure. [Online], available at: www.mhra.gove.uk.standard operating procedure [accessed 20 Mar 14]Martindale (2007).The complete drug reference.35th ed. London: Pharmaceutical Press. Winfield, A.J., Rees, J.A. and Smith, I. (2009) Pharmacy practice. 4th ed. London: Churchill LivingstoneTutor's Pantry. For Mph117 Lectures (2014) principle of extemporaneous dispensing 1, 2 and 3, Mph117.University of Sunderland: unpublished bibliography: Florence, T, A. &Attwood. (2011) Physicochemical principles of pharmacy.5th edition London: Pharmaceutical Press.Picton, C. (2011) prescribing Specials, Five guiding principles for prescribers. [Online] available at: http://www.nhs.uk.