![]() | The examples and perspective in this article deal primarily with the United States, United Kingdom, and Australia and do not represent a worldwide view of the subject.(December 2023) |
Commonly prescribed drugs are drugs that are frequently provided by doctors in a prescription to treat a certain disease. These drugs are often first-line treatment for the target diseases and are effective in tackling the symptoms. An example of the target disease is ischemic heart disease. Some examples of commonly prescribed drugs for this disease are beta-blockers, calcium-channel blockers and nitrates.
In accordance with the pharmacological effects, commonly prescribed drugs can be divided into different groups. Drugs in the same group exert nearly identical effects, and can be utilized for treating the prevailing disease and sometimes, preventing complications of the existing diseases.
The use of commonly prescribed drugs can be reflected from the number of prescriptions of the drugs. Countries have their own dataset in recording the trend of commonly prescribed drugs. For example, the United States uses the Medical Expenditure Panel Survey (MEPS) [1] and England uses the English Prescribing Dataset [2] to record the prescription data for showing which drugs are commonly prescribed.
Understanding commonly prescribed drugs allows healthcare professionals to react to symptoms quickly and new treatment strategies can be developed. However, the data for commonly prescribed drugs may be outdated due to the time lag between data collection and publication as well as errors in data collection process.
Commonly prescribed drugs are prescribed according to guidelines around the world. For instance, for ischemic heart disease, the American College of Cardiology/American Heart Association (ACC/AHA) guideline is used in the United States and the European Society of Cardiology (ESC) guideline is used in Europe. Western guidelines are more commonly used for reference during the development of local practice guidelines due to the large number of western guidelines stored in guideline databases. [3] The data of prescriptions are collected through the government, such as Medical Expenditure Panel Survey (MEPS) in America and the Pharmaceutical Benefit Scheme (PBS) in Australia, providing information on the actual prescription volume of drugs.
The Medical Expenditure Panel Survey (MEPS) conducted by the Agency for Healthcare Research and Quality (AHRQ) via the United States government is used to collect prescription data and data for other healthcare services, including home healthcare, children's health and preventive care in America. The survey started in 1996 and was the predecessor of the National Medical Expenditure Survey (NMES) and the National Medical Care Utilization and Expenditure Survey (NMCUES), [4] which were conducted in 1977 (NMES-1), 1980 (NMCUES), and 1987 (NMES-2). The survey is updated every year with the renewed data from the country. The prescription data is published in the Prescribed Medicines File of the MEPS. [5] The collection of data involves two components: Household component and the Medical Provider component. The household component collects self-reported data of the prescribed medicines and the demographic information of the respondents. The Medical Provider component acts as a piece of follow-back information provided by the pharmacy including a computerized printout for all prescription filled for the patient. [6]
The English Prescribing Dataset (EPD) from the NHS Business Services Authority (NHSBSA) provides prescription data in the United Kingdom. [2] The dataset was created in 2014. EPD is a combination of the Detailed Prescribing Information (DPI) and the Practice Level Prescribing in England (PLP). Both DPI and PLP are previous datasets from NHSBSA and NHS Digital respectively and EPD aims to replace them both in the future, but no specific date of replacement is given. EPD collects data from England, Wales, Scotland, Guernsey, Alderney, Jersey and the Isle of Man. EPD provides the item, quantity, net ingredient cost, actual cost, average daily quantity (ADQ), practice name and address details of the prescription. [7]
The Pharmaceutical Benefits Scheme (PBS) from the Australian Government Department of Health provides the prescription data of prescriptions under PBS. PBS started in 1948 and the under co-payment prescriptions were added into the dataset from 1 April 2012. It publishes the PBS expenditure and prescriptions report every year recording prescription data in the past 12 months. The examples of data it provides are the top 50 drugs by total prescription volume and the top 50 drugs by government cost. [8]
Understanding commonly prescribed drugs for different diseases can allow healthcare professionals to be more confident and decisive when choosing the most suitable treatment for the patient. This can also help develop new treatment strategies by researchers for more effective treatments. [9] By enriching the knowledge of commonly prescribed drugs, pharmacy students will be more familiar with their mechanism of action, first-line therapy indications and side effects. [10]
Limitations include time lag for the conducted survey. The Medical Expenditure Panel Survey (MEPS) shows data recorded two years before the publishing of the survey. The time lag may lead to a difference in representing the current prescribing practice with the recorded data in the survey. Questionnaires which are self-reported tend to create recall bias. Respondents are likely to underreport the number of prescription drugs they have as those drugs are usually for short-term use and intermittent use, such as analgesics and topical agents. [11]
Two diseases from the top 10 causes of death introduced by the World Health Organization (WHO) in 2019 are used as examples, namely ischemic heart disease (ranked 1st) from cardiovascular diseases and Chronic Obstructive Pulmonary Disease from respiratory diseases (ranked 3rd). [12] Although stroke is ranked 2nd by WHO, drugs used are similar to ischemic heart disease. Moreover, surgical interventions are commonly required, so it will be out of the scope of this article and it will not be introduced. [13] [14]
Ischemic Heart Disease (IHD) or coronary heart disease is the lack of supply of blood to an area in the heart, often due to plaque formation (atherosclerosis), causing inadequacy of oxygen to heart muscle and eventually leading to myocardial infarction. This disease can be classified into acute and chronic coronary heart disease. This disease caused 8.9 million deaths in 2019 and was ranked 1st in the top 10 causes of death globally by the World Health Organization (WHO). [12]
The treatment of Ischemic Heart Disease can be divided into two directions: risk factor control and symptomatic relief.
Commonly prescribed drugs for Ischemic Heart Disease
Types of drug | Common Examples | Mechanism of benefit and effect | Side effects, caution & contraindications | Remarks |
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Beta-blockers | Block beta-1 receptors in the heart → stop the effects of catecholamines on the heart→ reduce heart rate, heart contractility and conduction velocity → reduce the workload of the heart [15] | Side effects [16]
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Caution
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Contraindications
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Calcium Channel Blockers (CCB) | Dihydropyridine (DHP) CCB: | Block L-type calcium channels in arterial smooth muscle cells → reduce vasoconstriction → reduce arterial blood pressure [18] | Side effects [19]
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Contraindications
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Non-DHP CCB: | Block L-type calcium channels in the myocardium → decrease heart rate and contractility [18] | Side effects
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Contraindications
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Caution
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Nitrates | Metabolized in body → release nitric oxide → increase cyclic guanosine monophosphate (cGMP) → vasodilating effects predominant on veins and epicardial coronary vessels → decrease preload, myocardial wall tension and increase blood flow to heart [20] | Side effects [21]
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Caution
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Contraindications | ||||
Non-steroidal |
| Block cyclooxygenase-1→ reduce thromboxane A2 production → reduce platelet activation and aggregation → reduce plaque formation and risk of adverse cardiovascular events [22] | Side effects [23]
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Caution
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Contraindications
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P2Y12 Inhibitors | Block P2Y12 receptors on platelets → prevent platelet activation by adenosine monophosphate (ADP) → prevent aggregation of platelets and plaque formation [25] | Side effects [23]
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Caution
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Contraindications
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Statins |
| Side effects [27]
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Caution
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Contraindications
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Chronic Obstructive Pulmonary Disease (COPD) is a disease that causes chronic respiratory problems by gradually blocking the respiratory tracts. The continuous exposure to toxic fumes produced by cigarettes, vehicle engines and other human activities leads to inflammation of the respiratory tract, causing the development of COPD. The problem will deteriorate over time if it is not well managed. It will eventually cause respiratory failure and death in the late stage. [28] It is the third deadliest disease reported by WHO in 2019 and it accounted for 6% of total deaths. [12]
There are two types of management plan in COPD, namely regular treatment and acute exacerbation. In acute exacerbation, new medications will be added to the existing prescription and they will be stopped once the exacerbation is managed.
Types of drug [28] | Common Examples [28] | Mechanism of benefit and the effect | Side effect, caution & contraindications | Remarks |
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Short-acting beta2-agonist (SABA) |
| Bind and activate beta2 adrenergic receptor on smooth muscles of respiratory tract → rise in cyclic AMP (cAMP) level in smooth muscle → relaxation of the smooth muscle [29] | Side effect [29] [30]
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Caution [32]
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Contraindications [32]
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Short-acting muscarinic antagonist (SAMA) | Interact with and block M3 muscarinic receptor on smooth muscles of respiratory tract → reduce acetylcholine activating postsynaptic M3 muscarinic receptor at neuromuscular junction → reduce bronchoconstriction ⇒ bronchodilation [29] | Side effects [29]
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Caution
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Contraindications [33]
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Long-acting beta2-agonist (LABA) | Refer to SABA | Side effects and Contraindications
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Caution [28]
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Long-acting muscarinic antagonist (LAMA) | Refer to SAMA | Side effects and Contraindications
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Caution [28]
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Methylxanthines |
| Side effects [29]
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Caution [36] | ||||
Contraindications [36]
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Inhaled corticosteroid (ICS) | Act on airway smooth muscle cells by activating intracellular glucocorticoid receptor → modifying gene expression in the cells
| Side effects [29] [36]
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Also act by enhancing the effect of beta2 agonists → correct and prevent the desensitization of beta2 receptors [29] | Caution [29]
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Contraindications
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Phosphodiesterase-4 (PDE4) inhibitor | Selectively blocking PDE4 on airway smooth muscles → increase intracellular cAMP level → induce action of protein kinase A → modulate inflammatory cytokine biosynthesis → reduce inflammation [38] | Side effects [36]
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Caution | ||||
Contraindications
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Mucolytics | Cleavage of S-S disulphur bond interlinking mucin polymer in the mucus → thinning the mucus and easier to be coughed out [40] | Side effects [41] [42]
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Caution [41] [42]
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Contraindications [41] [42]
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Systemic corticosteroids | Refer to ICS | Side effects [29] [43]
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Caution [29]
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Contraindications [43]
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Antibiotics | Amoxicillin [44] [45] [46]
Macrolides [45] [46] [47] [48]
Tetracycline [45] [46] [47] [49]
![]() | Side effects [44] [47]
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Caution [44] [47]
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Contraindications [44] [47]
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In patients with COPD, multiple inhalers need to be used at a time. There are two major types of inhaler, namely dry-powder inhaler(DPI) and metered-dose inhaler(MDI), and many more subtypes with different techniques for using them. [51] Adherence is also an issue with the use of multiple inhalers. Generally with different types of inhalers, the adherence will be lowered. [52] [53] Proper inhaler technique and adherence are two of the factors that affect the management of COPD. Other factors include smoking cessation and participation in physical activities, to name but a few. [54] With inappropriately applied inhaler technique and low adherence, there will be ineffective management of COPD, thus increasing in the burden on the healthcare sector. [31] [55] As a result, inhalers combining multiple medications are invented to tackle the problem.
Medication combined [28] | Examples [28] | Benefits [28] |
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SABA+SAMA |
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LABA+LAMA |
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ICS+LAMA |
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LABA+LAMA+ICS |
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Salbutamol, also known as albuterol and sold under the brand name Ventolin among others, is a medication that opens up the medium and large airways in the lungs. It is a short-acting β2 adrenergic receptor agonist that causes relaxation of airway smooth muscle. It is used to treat asthma, including asthma attacks and exercise-induced bronchoconstriction, as well as chronic obstructive pulmonary disease (COPD). It may also be used to treat high blood potassium levels. Salbutamol is usually used with an inhaler or nebulizer, but it is also available in a pill, liquid, and intravenous solution. Onset of action of the inhaled version is typically within 15 minutes and lasts for two to six hours.
In medicine, a nebulizer or nebuliser is a drug delivery device used to administer medication in the form of a mist inhaled into the lungs. Nebulizers are commonly used for the treatment of asthma, cystic fibrosis, COPD and other respiratory diseases or disorders. They use oxygen, compressed air or ultrasonic power to break up solutions and suspensions into small aerosol droplets that are inhaled from the mouthpiece of the device. An aerosol is a mixture of gas and solid or liquid particles.
Antihypertensives are a class of drugs that are used to treat hypertension. Antihypertensive therapy seeks to prevent the complications of high blood pressure, such as stroke, heart failure, kidney failure and myocardial infarction. Evidence suggests that reduction of the blood pressure by 5 mmHg can decrease the risk of stroke by 34% and of ischaemic heart disease by 21%, and can reduce the likelihood of dementia, heart failure, and mortality from cardiovascular disease. There are many classes of antihypertensives, which lower blood pressure by different means. Among the most important and most widely used medications are thiazide diuretics, calcium channel blockers, angiotensin-converting enzyme inhibitors, angiotensin II receptor blockers or antagonists (ARBs), and beta blockers.
A cardiac stress test is a cardiological examination that evaluates the cardiovascular system's response to external stress within a controlled clinical setting. This stress response can be induced through physical exercise or intravenous pharmacological stimulation of heart rate.
Mesalazine, also known as mesalamine or 5-aminosalicylic acid (5-ASA), is a medication used to treat inflammatory bowel disease, including ulcerative colitis and Crohn's disease. It is generally used for mildly to moderately severe disease. It is taken by mouth or rectally. The formulations which are taken by mouth appear to be similarly-effective.
Salmeterol is a long-acting β2 adrenergic receptor agonist (LABA) used in the maintenance and prevention of asthma symptoms and maintenance of chronic obstructive pulmonary disease (COPD) symptoms. Symptoms of bronchospasm include shortness of breath, wheezing, coughing and chest tightness. It is also used to prevent breathing difficulties during exercise.
Budesonide/formoterol, sold under the brand name Symbicort among others, is a fixed-dose combination medication used in the management of asthma or chronic obstructive pulmonary disease (COPD). It contains budesonide, a steroid; and formoterol, a long-acting β2-agonist (LABA). The product monograph does not support its use for sudden worsening or treatment of active bronchospasm. However, a 2020 review of the literature does support such use. It is used by breathing in the medication.
An inhaler is a medical device used for delivering medicines into the lungs through the work of a person's breathing. This allows medicines to be delivered to and absorbed in the lungs, which provides the ability for targeted medical treatment to this specific region of the body, as well as a reduction in the side effects of oral medications. There are a wide variety of inhalers, and they are commonly used to treat numerous medical conditions with asthma and chronic obstructive pulmonary disease (COPD) being among the most notable.
Beta2-adrenergic agonists, also known as adrenergic β2 receptor agonists, are a class of drugs that act on the β2 adrenergic receptor. Like other β adrenergic agonists, they cause smooth muscle relaxation. β2 adrenergic agonists' effects on smooth muscle cause dilation of bronchial passages, vasodilation in muscle and liver, relaxation of uterine muscle, and release of insulin. They are primarily used to treat asthma and other pulmonary disorders. Bronchodilators are considered an important treatment regime for chronic obstructive pulmonary disease (COPD) and are usually used in combination with short acting medications and long acting medications in a combined inhaler.
A metered-dose inhaler (MDI) is a device that delivers a specific amount of medication to the lungs in the form of a short burst of aerosolized medicine that is usually self-administered by the patient via inhalation. It is the most commonly used delivery system for treating asthma, chronic obstructive pulmonary disease (COPD) and other respiratory diseases. The medication in a metered dose inhaler is most commonly a bronchodilator, corticosteroid or a combination of both for treating asthma and COPD. Other medications less commonly used but also administered by MDI are mast cell stabilizers, such as cromoglicate or nedocromil.
The term private prescription is a term used in the United Kingdom for a medical prescription which is not supplied under the National Health Service (NHS).
Fluticasone furoate, sold under the brand name Flonase Sensimist among others, is a corticosteroid for the treatment of non-allergic and allergic rhinitis administered by a nasal spray. It is also available as an inhaled corticosteroid to help prevent and control symptoms of asthma. It is derived from cortisol. Unlike fluticasone propionate, which is only approved for children four years and older, fluticasone furoate is approved in children as young as two years of age when used for allergies.
Barbiturates are a class of depressant drugs that are chemically derived from barbituric acid. They are effective when used medically as anxiolytics, hypnotics, and anticonvulsants, but have physical and psychological addiction potential as well as overdose potential among other possible adverse effects. They have been used recreationally for their anti-anxiety and sedative effects, and are thus controlled in most countries due to the risks associated with such use.
Aclidinium bromide (INN) is a long-acting, inhaled muscarinic antagonist (LAMA) approved in the United States in July 2012 as a maintenance treatment for chronic obstructive pulmonary disease (COPD).
Tiotropium bromide, sold under the brand name Spiriva among others, is a long-acting bronchodilator used in the management of chronic obstructive pulmonary disease (COPD) and asthma. Specifically it is used during periods of breathing difficulty to prevent them from getting worse, rather than to prevent them from happening. It is used by inhalation through the mouth. Onset typically begins within half an hour and lasts for 24 hours.
The Medical Expenditure Panel Survey (MEPS) is a family of surveys intended to provide nationally representative estimates of health expenditure, utilization, payment sources, health status, and health insurance coverage among the noninstitutionalized, nonmilitary population of the United States. This series of government-produced data sets can be used to examine how individuals interact with the medical care system in the United States.
Budesonide, sold under the brand name Pulmicort, among others, is a steroid medication. It is available as an inhaler, nebulization solution, pill, nasal spray, and rectal forms. The inhaled form is used in the long-term management of asthma and chronic obstructive pulmonary disease (COPD). The nasal spray is used for allergic rhinitis and nasal polyps. Modified-release pills or capsules and rectal forms may be used for inflammatory bowel disease including Crohn's disease, ulcerative colitis, and microscopic colitis.
Olodaterol is an ultra-long-acting β adrenoreceptor agonist (ultra-LABA) used as an inhalation for treating people with chronic obstructive pulmonary disease (COPD). It is manufactured by Boehringer Ingelheim.
Fluticasone furoate/umeclidinium bromide/vilanterol, sold under the brand name Trelegy Ellipta among others, is a fixed-dose combination inhaled medication that is used for the maintenance treatment of chronic obstructive pulmonary disease (COPD). The medications work in different ways: fluticasone furoate is an inhaled corticosteroid (ICS), umeclidinium is a long-acting muscarinic antagonist (LAMA), and vilanterol is a long-acting beta-agonist (LABA).
Prescription drug addiction is the chronic, repeated use of a prescription drug in ways other than prescribed for, including using someone else’s prescription. A prescription drug is a pharmaceutical drug that may not be dispensed without a legal medical prescription. Drugs in this category are supervised due to their potential for misuse and substance use disorder. The classes of medications most commonly abused are opioids, central nervous system (CNS) depressants and central nervous stimulants. In particular, prescription opioid is most commonly abused in the form of prescription analgesics.