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A prescription drug (also prescription medication or prescription medicine) is a pharmaceutical drug that legally requires a medical prescription to be dispensed. In contrast, over-the-counter drugs can be obtained without a prescription. The reason for this difference in substance control is the potential scope of misuse, from drug abuse to practicing medicine without a license and without sufficient education. Different jurisdictions have different definitions of what constitutes a prescription drug. "Rx" is often used as a short form for prescription drug in North America- a contraction of the Latin word "''recipe''" (an imperative form of "recipere") meaning "take". Prescription drugs are often dispensed together with a monograph (in Europe, a Patient Information Leaflet or PIL) that gives detailed information about the drug. ==Regulation in United States== In the United States, the Federal Food, Drug, and Cosmetic Act defines what requires a prescription. In general, prescription drugs are authorized by physicians, physician assistants, nurse practitioners, and other APRNs, veterinarians, dentists, and optometrists. In general, it is required that an MD, DO, PA, OD, DPM, NMD, ND, DVM, DDS, or DMD, some psychologists (see medical psychology), clinical pharmacists, nurse practitioners, and other APRNs write the prescription; basic-level registered nurses, medical assistants, emergency medical technicians, most psychologists, and social workers as examples, do not have the authority to prescribe drugs. The Controlled Substances Act (CSA) was enacted into law by the Congress of the United States in 1970. The CSA is the federal U.S. drug policy under which the manufacture, importation, possession, use and distribution of certain substances is regulated. The legislation created five Schedules (classifications), with varying qualifications for a substance to be included in each. The safety and effectiveness of prescription drugs in the US is regulated by the federal Prescription Drug Marketing Act of 1987. The Food and Drug Administration (FDA) is charged with implementing this law. The package insert for a prescription drug contains information about the intended effect of the drug and how it works in the body. It also contains information about side-effects, how a patient should take the drug, and cautions for its use, including warnings about allergies. As a general rule, ''over-the-counter drugs'' (OTC) are used to treat conditions not necessarily requiring care from a healthcare professional and have been proven to meet higher safety standards for self-medication by patients. Often a lower strength of a drug will be approved for OTC use, whereas higher strengths require a prescription to be obtained; a notable case is ibuprofen, which has been widely available as an OTC pain killer since the mid-1980s but is still available by prescription in doses up to four times the OTC dose for use in cases of severe pain not adequately controlled by the lower, OTC strength. Herbal preparations, amino acids, vitamins, minerals, and other food supplements are regulated by the FDA as dietary supplements. Because specific health claims cannot be made, the consumer must make informed decisions when purchasing such products. In the United States, the term "prescription drug" is most commonly used, but they are also called Rx-only drugs or legend drugs, after the Federal and State laws that mandate that all such drugs bear a "legend" prohibiting sale without a prescription; though more complex legends have been used, on most original drug packaging today the legend simply states "Rx only". Also, pharmacies operated by membership clubs, such as Costco and Sam's Club, by law must allow non-members to use their pharmacy services and must charge the same prices as to members. Physicians may legally prescribe drugs for uses other than those specified in the FDA approval; this is known as off-label use. Drug companies may not promote or market drugs for off-label uses. Large U.S. retailers that operate pharmacies and pharmacy chains use inexpensive generic drugs as a way to attract customers into stores. Several chains, including Walmart, Kroger (including subsidiaries such as Dillons), Target, and others, offer $4 monthly prescriptions on select generic drugs as a customer draw. Publix Supermarkets, which has pharmacies in many of their stores, offers free prescriptions on a few older but still effective medications to their customers. The maximum supply is for 30 days. A number of prescription drugs are commonly abused, including fentanyl (Duragesic), hydrocodone (Vicodin), oxycodone (OxyContin), oxymorphone (Opana), propoxyphene (Darvon), hydromorphone (Dilaudid), meperidine (Demerol), and diphenoxylate (Lomotil). ==Regulation in United Kingdom== In the United Kingdom the Medicines Act 1968 and (Prescription Only Medicines (Human Use) Order 1997 ) contain regulations that cover the supply of sale, use and production of medicines. Prescribing is also covered by this legislation. There are three categories of medicine:〔(【引用サイトリンク】 About Registration: Medicines and Prescribing )〕 * Prescription-only medicines (POM), which can be sold by a pharmacist if prescribed by a prescriber * Pharmacy medicines (P), which may be sold by a pharmacist without prescription * General sales list (GSL) medicines that may be sold without a prescription in any shop Possession of prescription-only medicines without a prescription is not a criminal offence unless it falls under the Misuse of Drugs Act. A patient visits a medical practitioner authorised to prescribe drugs and certain other medical items, such as blood glucose-testing equipment for diabetics. Also, suitably qualified and experienced nurses and pharmacists may be independent prescribers. Both can prescribe all POMs but pharmacists are not allowed to prescribe schedule 1 controlled drugs. District nurses and health visitors have had limited prescribing rights since the mid-nineties, before which prescriptions for dressings and simple medicines would have had to have been signed by a doctor. Once issued, a prescription is taken by the patient to a pharmacy, which dispenses the medicine. Most prescriptions in the UK are NHS prescriptions, subject to a standard charge unrelated to what is dispensed. The NHS prescription fee was increased to £8.20 per item in England on 1 April 2015;〔(【引用サイトリンク】url=http://www.nhs.uk/nhsengland/Healthcosts/pages/Prescriptioncosts.aspx )〕 prescriptions are free of charge if prescribed and dispensed in Scotland, Wales or Northern Ireland.〔(【引用サイトリンク】) Prescription charges">url=http://www.nidirect.gov.uk/index/information-and-services/health-and-well-being/health-services/doctors-dentists-and-other-health-services/prescription-charges.htm )〕 The pharmacy charges the NHS the actual cost of the medicine; the patient pays a set prescription charge in England to the pharmacy. Most of the prescriptions dispensed on the NHS are exempt from charges even in England, as there are many exceptions on grounds such as age and chronic disease, and "season tickets" may be purchased to cover an unlimited amount of medication during a set period. The fee for each item does not depend upon the quantity prescribed by the doctor (which is subject to a maximum of three months' supply), or the cost of the medicine to the NHS, which may vary from a few pence to hundreds of pounds. Outside the NHS, private prescriptions are issued by private medical practitioners, and sometimes under the NHS for medicines not covered by the NHS.〔〔 NHS supply beyond three months' worth is not covered, and must be purchased privately. A patient pays the pharmacy the normal price for medicine prescribed outside the NHS. Survey results published by Ipsos MORI in 2008 found that around 800,000 people in England were not collecting prescriptions or getting them dispensed due to the cost, a figure which was the same as in 2001.〔(Ipsos MORI:Prescription Costs A Barrier To Healthcare, 27 February 2008 )〕 ==Regulation in Australia== In Australia the Standard for the Uniform Scheduling of Medicines and Poisons, abbreviated SUSMP, governs the manufacture and supply of drugs: (詳細はhealth practitioner, such as a doctor, nurse, dentist, podiatrist, etc., who is able to prescribe the drug. (詳細はPharmaceutical Benefits Scheme, a scheme that provides subsidised prescription drugs to residents of Australia to ensure that all Australians have affordable and reliable access to a wide range of necessary medicines. When purchasing a drug under the PBS the maximum price a consumer pays is the patient co-payment contribution, which, as of January 1, 2014, is A$36.90 for general patients. Those covered by government entitlements (low-income earners, welfare recipients, Health Care Card holders, etc.) and those covered under the Repatriation Pharmaceutical Benefits Scheme (RPBS) have a reduced co-payment, which is $6.00 in 2014. The table below indicates the changes in co-payments over the years. These co-payments are compulsory and cannot be discounted by pharmacies under any circumstances. Private prescriptions are issued for medicines not covered on the PBS, or being used off-label, for indications other than those covered by the PBS. The patient pays the pharmacy for medicines privately prescribed. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「prescription drug」の詳細全文を読む スポンサード リンク
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