Pharmacy is the health profession that links the health sciences with the chemical sciences and it is charged with ensuring the safe and effective use of pharmaceutical drugs. The word derives from the Greek: φάρμακον (pharmakon), meaning "drug" or "medicine" (the earliest form of the word is the Mycenaean Greek pa-ma-ko, attested in Linear B syllabic script).
The scope of pharmacy practice includes more traditional roles such as compounding and dispensing medications, and it also includes more modern services related to health care, including clinical services, reviewing medications for safety and efficacy, and providing drug information. Pharmacists, therefore, are the experts on drug therapy and are the primary health professionals who optimize medication use to provide patients with positive health outcomes.
An establishment in which pharmacy (in the first sense) is practiced is called a pharmacy, chemist's or (in the United States) drug store. US drug stores commonly sell not only medicines, but also miscellaneous items such as candy (sweets), cosmetics, and magazines, as well as light refreshments or groceries.
The word pharmacy is derived from its root word pharma which was a term used since the 15th–17th centuries. In addition to pharma responsibilities, the pharma offered general medical advice and a range of services that are now performed solely by other specialist practitioners, such as surgery and midwifery. The pharma (as it was referred to) often operated through a retail shop which, in addition to ingredients for medicines, sold tobacco and patent medicines. The pharmas also used many other herbs not listed.
In its investigation of herbal and chemical ingredients, the work of the pharma may be regarded as a precursor of the modern sciences of chemistry and pharmacology, prior to the formulation of the scientific method.
Pharmacists are highly qualified, highly trained and skilled healthcare professionals who perform various roles to ensure optimal health outcomes for their patients. Many pharmacists are also small-business proprietors, owning the pharmacy in which they practice. Since pharmacists know about the chemical synthesis mode of action of a particular drug, and its metabolism and physiological effects on human body in great detail, they play a very important role in optimisation of a drug threatment for an individual.
Pharmacists are represented internationally by the International Pharmaceutical Federation (FIP). They are represented at the national level by professional organisations such as the Royal Pharmaceutical Society (RPS), the Pharmacy Guild of Australia (PGA), the American Pharmacists Association (APhA) and the Pakistan Pharmacists Society (PPS). See also: List of pharmacy associations.
In some cases, the representative body is also the registering body, which is responsible for the ethics of the profession.
History of pharmacy
The history of pharmacy as an independent science is relatively young. The origins of historiography pharmaceutical back to the first third of the s. XIX which is when the first historiographies that while not touching all aspects of pharmaceutical history is the starting point for the final start of this science.
Until the birth of pharmacy as an independent science, there is a historical evolution from antiquity to the present day that marks the course of this science, always connected to the medicine.
The earliest known Chinese manual on materia medica is the Shennong Bencao Jing (The Divine Farmer's Herb-Root Classic), dating back to the 1st century AD. It was compiled during the Han dynasty and was attributed to the mythical Shennong. Earlier literature included lists of prescriptions for specific ailments, exemplified by a manuscript "Recipes for 52 Ailments", found in the Mawangdui tomb, sealed in 168 BC. Further details on Chinese pharmacy can be found in the Pharmacy in China article.
In Ancient Greece, according to Edward Kremers and Glenn Sonnedecker, "before, during and after the time of Hippocrates there was a group of experts in medicinal plants. Probably the most important representative of these rhizotomoi was Diocles of Carystus (4th century BC). He is considered to be the source for all Greek pharmacotherapeutic treatises between the time of Theophrastus and Dioscorides." The Greek physician Pedanius Dioscorides is famous for writing a five volume book in his native Greek Περί ύλης ιατρικής in the 1st century AD. The Latin translation De Materia Medica (Concerning medical substances) was used a basis for many medieval texts, and was built upon by many middle eastern scientists during the Islamic Golden Age. The title coined the term materia medica.
In Japan, at the end of the Asuka period (538-710) and the early Nara period (710-794), the men who fulfilled roles similar to those of modern pharmacists were highly respected. The place of pharmacists in society was expressly defined in the Taihō Code (701) and re-stated in the Yōrō Code (718). Ranked positions in the pre-Heian Imperial court were established; and this organizational structure remained largely intact until the Meiji Restoration (1868). In this highly stable hierarchy, the pharmacists—and even pharmacist assistants—were assigned status superior to all others in health-related fields such as physicians and acupuncturists. In the Imperial household, the pharmacist was even ranked above the two personal physicians of the Emperor.
There is a stone sign for a pharmacy with a tripod, a mortar, and a pestle opposite one for a doctor in the Arcadian Way in Ephesus near Kusadasi in Turkey. The current Ephesus dates back to 400BC and was the site of the Temple of Artemis one of the seven wonders of the world, the home of Mark Anthony and Cleopatra, Mary Magdalen and where St Paul read his letter to the Ephesians.
In Baghdad the first pharmacies, or drug stores, were established in 754, under the Abbasid Caliphate during the Islamic Golden Age. By the 9th century, these pharmacies were state-regulated.
The advances made in the Middle East in botany and chemistry led medicine in medieval Islam substantially to develop pharmacology. Muhammad ibn Zakarīya Rāzi (Rhazes) (865-915), for instance, acted to promote the medical uses of chemical compounds. Abu al-Qasim al-Zahrawi (Abulcasis) (936-1013) pioneered the preparation of medicines by sublimation and distillation. His Liber servitoris is of particular interest, as it provides the reader with recipes and explains how to prepare the `simples’ from which were compounded the complex drugs then generally used. Sabur Ibn Sahl (d 869), was, however, the first physician to initiate pharmacopoedia, describing a large variety of drugs and remedies for ailments. Al-Biruni (973-1050) wrote one of the most valuable Islamic works on pharmacology entitled Kitab al-Saydalah (The Book of Drugs), where he gave detailed knowledge of the properties of drugs and outlined the role of pharmacy and the functions and duties of the pharmacist. Ibn Sina (Avicenna), too, described no less than 700 preparations, their properties, mode of action and their indications. He devoted in fact a whole volume to simple drugs in The Canon of Medicine. Of great impact were also the works by al-Maridini of Baghdad and Cairo, and Ibn al-Wafid (1008–1074), both of which were printed in Latin more than fifty times, appearing as De Medicinis universalibus et particularibus by `Mesue' the younger, and the Medicamentis simplicibus by `Abenguefit'. Peter of Abano (1250–1316) translated and added a supplement to the work of al-Maridini under the title De Veneris. Al-Muwaffaq’s contributions in the field are also pioneering. Living in the 10th century, he wrote The foundations of the true properties of Remedies, amongst others describing arsenious oxide, and being acquainted with silicic acid. He made clear distinction between sodium carbonate and potassium carbonate, and drew attention to the poisonous nature of copper compounds, especially copper vitriol, and also lead compounds. He also describes the distillation of sea-water for drinking.
In Europe pharmacy-like shops began to appear during the 12th century. In 1240 emperor Frederic II issued a decree by which the physician's and the apothecary's professions were separated. The first pharmacy in Europe (still working) was opened in 1241 in Trier, Germany.
In Europe there are old pharmacies still operating in Dubrovnik, Croatia located inside the Franciscan monastery, opened in 1317 ; and one in the Town Hall Square of Tallinn, Estonia dating from at least 1422.
The oldest is claimed to be set up in 1221 in the Church of Santa Maria Novella in Florence, Italy, which now houses a perfume museum. The medieval Esteve Pharmacy, located in Llívia, a Catalan enclave close to Puigcerdà, is also now a museum dating back to the 15th century, keeping albarellos from the 16th and 17th centuries, old prescription books and antique drugs.
The history of pharmacy as an independent science is relatively young. The origins of historiography pharmaceutical back to the first third of the s. XIX which is when the first historiographies that while not touching all aspects of pharmaceutical history is the starting point for the final start of this science.
Until the birth of pharmacy as an independent science, there is a historical evolution from antiquity to the present day that marks the course of this science, always connected to the medicine.
Pharmacies within hospitals differ considerably from community pharmacies. Some pharmacists in hospital pharmacies may have more complex clinical medication management issues whereas pharmacists in community pharmacies often have more complex business and customer relations issues.
Because of the complexity of medications including specific indications, effectiveness of treatment regimens, safety of medications (i.e., drug interactions) and patient compliance issues (in the hospital and at home) many pharmacists practicing in hospitals gain more education and training after pharmacy school through a pharmacy practice residency and sometimes followed by another residency in a specific area. Those pharmacists are often referred to as clinical pharmacists and they often specialize in various disciplines of pharmacy. For example, there are pharmacists who specialize in hematology/oncology, HIV/AIDS, infectious disease, critical care, emergency medicine, toxicology, nuclear pharmacy, pain management, psychiatry, anti-coagulation clinics, herbal medicine, neurology/epilepsy management, pediatrics, neonatal pharmacists and more.
Hospital pharmacies can often be found within the premises of the hospital. Hospital pharmacies usually stock a larger range of medications, including more specialized medications, than would be feasible in the community setting. Most hospital medications are unit-dose, or a single dose of medicine. Hospital pharmacists and trained pharmacy technicians compound sterile products for patients including total parenteral nutrition (TPN), and other medications given intravenously. This is a complex process that requires adequate training of personnel, quality assurance of products, and adequate facilities. Several hospital pharmacies have decided to outsource high risk preparations and some other compounding functions to companies who specialize in compounding. The high cost of medications and drug-related technology, combined with the potential impact of medications and pharmacy services on patient-care outcomes and patient safety, make it imperative that hospital pharmacies perform at the highest level possible.
Hospital pharmacy
A hospital pharmacy is concerned with pharmacy service to all types of hospital and differs considerably from a community pharmacy.
Some pharmacists in hospital pharmacies may have more complex clinical medication management issues whereas pharmacists in community pharmacies often have more complex business and customer relations issues. Because of the complexity of the medication use system, many pharmacists practicing in hospitals gain more education and training after pharmacy school through a pharmacy practice residency and sometimes followed by another residency in a specific area.
Hospital pharmacies can usually be found within the premises of the hospital. Hospital pharmacies usually stock a larger range of medications, including more specialized and investigational medications (medicines that are being studied, but have not yet been approved), than would be feasible in the community setting. Hospital pharmacies typically provide medications for the hospitalized patients only, and are not retail establishments. They typically do not provide prescription service to the public. Some hospitals do have retail pharmacies within them (see illustration), which sell over-the-counter as well as prescription medications to the public, but these are not the actual hospital pharmacy.
Clinical pharmacists provide direct patient care services that optimizes the use of medication and promotes health, wellness, and disease prevention. Clinical pharmacists care for patients in all health care settings but the clinical pharmacy movement initially began inside hospitals and clinics. Clinical pharmacists often collaborate with physicians and other healthcare professionals to improve pharmaceutical care. Clinical pharmacists are now an integral part of the interdisciplinary approach to patient care. They work collaboratively with physicians, nurses and other healthcare personnel in various medical and surgical areas. They often participate in patient care rounds and drug product selection. In most hospitals in the United States, potentially dangerous drugs that require close monitoring are dosed and managed by clinical pharmacists.
Clinical pharmacy
Clinical pharmacy is the branch of Pharmacy where pharmacists and pharmaconomists provide patient care that optimizes the use of medication and promotes health, wellness, and disease prevention. Clinical pharmacists and clinical pharmaconomists care for patients in all health care settings but the clinical pharmacy movement initially began inside hospitals and clinics. Clinical pharmacists/pharmaconomists often collaborate with physicians and other healthcare professionals.
Clinical pharmacists and clinical pharmaconomists have extensive education in the biomedical, pharmaceutical, sociobehavioral and clinical sciences. Most clinical pharmacists have a Doctor of Pharmacy (Pharm.D.) degree and many have completed one or more years of post-graduate training (e.g. a general and/or specialty pharmacy residency). Many clinical pharmacists also choose to become Board Certified through the Board of Pharmaceutical Specialties (BPS) which was organized in 1976 as an independent certification agency of APhA (American Pharmacists Association). A pharmacist may become a Board Certified Pharmacotherapy Specialist (BCPS), a Board Certified Oncology Pharmacist (BCOP), Board Certified Nuclear Pharmacist (BCNP), Board Certified Nutrition Support Pharmacist (BCNSP), or a Board Certified Psychiatric Pharmacist (BCPP) through the Board of Pharmaceutical Specialities (BPS). There are also subspecialties within the Pharmacotherapy specialty: Cardiology and Infectious Disease. It is denoted as an "Added Qualification" or AQ. In order to obtain one of these specialties you must first be a Board Certified Pharmacotherapy Specialist and then submit a portfolio to the Board of Pharmaceutical Specialties for review to determine if they will grant you the added qualifications. An up-to-date explanation of pharmacy education leading to the Doctor of Pharmacy degree and Specialty Board Certification can be viewed at: http://www.youtube.com/watch?v=MvPb5peBnAY.
Within the system of health care, clinical pharmacists are experts in the therapeutic use of medications. They routinely provide medication therapy evaluations and recommendations to patients and other health care professionals. Clinical pharmacists are a primary source of scientifically valid information and advice regarding the safe, appropriate, and cost-effective use of medications. Clinical pharmacists are also making themselves more readily available to the public. In the past, access to a clinical pharmacist was limited to hospitals, clinics, or educational institutions. However, clinical pharmacists are making themselves available through a medication information hotline, and reviewing medication lists, all in an effort to prevent medication errors in the foreseeable future.
In some states, clinical pharmacists are given prescriptive authority under protocol with a medical provider (i.e., MD or DO), and their scope of practice is constantly evolving.
Since about the year 2000, a growing number of internet pharmacies have been established worldwide. Many of these pharmacies are similar to community pharmacies, and in fact, many of them are actually operated by brick-and-mortar community pharmacies that serve consumers online and those that walk in their door. The primary difference is the method by which the medications are requested and received. Some customers consider this to be more convenient and private method rather than traveling to a community drugstore where another customer might overhear about the drugs that they take. Internet pharmacies (also known as Online Pharmacies) are also recommended to some patients by their physicians if they are homebound.
While most internet pharmacies sell prescription drugs and require a valid prescription, some internet pharmacies sell prescription drugs without requiring a prescription. Many customers order drugs from such pharmacies to avoid the "inconvenience" of visiting a doctor or to obtain medications which their doctors were unwilling to prescribe. However, this practice has been criticized as potentially dangerous, especially by those who feel that only doctors can reliably assess contraindications, risk/benefit ratios, and an individual's overall suitability for use of a medication. There also have been reports of such pharmacies dispensing substandard products.
Of particular concern with internet pharmacies is the ease with which people, youth in particular, can obtain controlled substances (e.g., Vicodin, generically known as hydrocodone) via the internet without a prescription issued by a doctor/practitioner who has an established doctor-patient relationship. There are many instances where a practitioner issues a prescription, brokered by an internet server, for a controlled substance to a "patient" s/he has never met. In the United States, in order for a prescription for a controlled substance to be valid, it must be issued for a legitimate medical purpose by a licensed practitioner acting in the course of legitimate doctor-patient relationship. The filling pharmacy has a corresponding responsibility to ensure that the prescription is valid. Often, individual state laws outline what defines a valid patient-doctor relationship.
Canada is home to dozens of licensed internet pharmacies, many of which sell their lower-cost prescription drugs to U.S. consumers, who pay one of the world's highest drug prices. In recent years, many consumers in the US and in other countries with high drug costs, have turned to licensed internet pharmacies in India, Israel and the UK, which often have even lower prices than in Canada.
In the United States, there has been a push to legalize importation of medications from Canada and other countries, in order to reduce consumer costs. While in most cases importation of prescription medications violates Food and Drug Administration (FDA) regulations and federal laws, enforcement is generally targeted at international drug suppliers, rather than consumers. There is no known case of any U.S. citizens buying Canadian drugs for personal use with a prescription, who has ever been charged by authorities.
Recently developed online services like Australia's Medicine Name Finder and the Walgreens' Drug Info Search provide information about pharmaceutical products but do not offer prescriptions or drug dispensations. These services often promote generic drug alternatives by offering comparative information on price and effectiveness.
Online pharmacy
Online pharmacies, or Internet pharmacies, are pharmacies that operate over the Internet. Many such pharmacies are, in some ways, similar to community pharmacies; the primary difference is the method by which the medications are requested and received. Some customers consider this to be more convenient than traveling to a community drugstore, in the same way as ordering goods online rather than going to a shop.
While many internet pharmacies sell prescription drugs only with a prescription, some do not require a pre-written prescription. In some countries, this is because prescriptions are not required. Some customers order drugs from such pharmacies to avoid the inconvenience of visiting a doctor or to obtain medications their doctors were unwilling to prescribe. People living in the United States and other countries where prescription medications are very expensive may turn to online pharmacies to save money. Many of these websites employ their own in-house physicians to review the medication request and write a prescription accordingly. Some websites offer medications without a prescription or a doctor review. This practice has been criticized as potentially dangerous, especially by those who feel that only doctors can reliably assess contraindications, risk/benefit ratios, and the suitability of a medication for a specific individual. Pharmacies offering medication without requiring a prescription and doctor review or supervision are sometimes fraudulent and may supply counterfeit—and ineffective and possibly dangerous—medicines.
In the United States, there has been a push to legalize importation of medications from Canada and several European countries to reduce consumer costs. Although importation of prescription medication usually violates Food and Drug Administration (FDA) regulations and federal laws, enforcement is generally targeted at international drug suppliers, rather than consumers. Often Americans purchase lower-cost foreign drugs by driving to Canadian or Mexican pharmacies, buying their medications when traveling abroad on vacation, or, buying by mail from foreign pharmacies.
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