Self-medication practices with conventional and herbal drugs among ear, nose, and throat patientsSUMMARY
OBJECTIVE: This study evaluates the self-practices with conventional and herbal drug use among ear, nose, and throat outpatients.
METHODS: A cross-sectional survey-based study was carried out among all ear, nose, and throat outpatients on their first visit to the otorhinolaryngology department at a tertiary care hospital. The survey comprised a total of 14 questions with 4 different sections, including demographic characteristics, self-medication of conventional medicines, herbal medication usage, and perception regarding herbal medicines.
RESULTS: Overall, 255 questionnaires were distributed among patients, of which 183 completed the questionnaire (response rate=71.7%). Respondents reported self-medication (44.8%) with conventional drugs before visiting a hospital. The most commonly used medicine was analgesics (31.7%) and antibiotics (21.9%). Nearly half of the patients (49.2%) used at least one herbal drug. The most commonly used herbal medications were Tilia cordata (78.8%), Zingiber officinale (62.2%), and Camellia sinensis (45.5%). According to the International Union for Conservation of Nature Red List, most of the medicinal herbs were considered as data deficient/least concern. About 36.6% of the participants perceived that herbal drugs are effective for ear, nose, and throat problems. Moreover, 22.9% of the patients did not know about herbal-drug interaction with other medications.
CONCLUSIONS: This study observed a considerable prevalence of self-based practices with conventional and herbal medications. Strict national regulations on conventional and herbal medication access and long-term actions should be implemented to discourage inappropriate drug use.
KEYWORDS:
Self medication; Herbal medicine; Antibiotics; Analgesics; Otolaryngology; Turkey
INTRODUCTION
Self-medication (SM) is a major public health issue around the world1. It is a frequent practice in both developing and developed countries2. Several studies have shown that inappropriate SM leads to wastages of health resources, raises pathogen resistance, and poses major health risks such as adverse drug reactions (ADRs), extended suffering, and dependency1,2. It is reported that a higher number of medications in developed countries were obtained without a prescription2. The use of herbal and nonherbal medication practices to meet healthcare needs was also prevalent in developing countries3. Moreover, it is also reported that more than 70% of people in developing countries utilize herbs for various illnesses4.
It is estimated that more than 75 and 50% of the populations in developing and developed countries, respectively, use natural plant products to treat lifestyle-related illnesses5. It is the widespread belief that plant-based products are risk free and can be consumed without restriction. It should be noted that plant derivatives, like any other medication, have adverse and toxic side effects6. They might contain toxins or other contaminants that increase the chance of adverse effects. More research is needed to clarify and determine the clinical significance of herb-drug interactions. It is critical for health professionals, patients, regulatory authorities, and herbal medicine suppliers to be aware of the potential ADRs and drug interactions that can occur when herbal medicines are used either alone or in combination with conventional drugs7. Additionally, many of them have unknown long-term effects, necessitating appropriate use, education, and research6. Therefore, it is important to conduct rigorous scientific procedures and clinical trials to guarantee the consistency and quality of herbal products5,7.
Ear, nose, and throat (ENT) diseases cause major disruption in patients’ daily lives1. The prevalence of ENT diseases varies by geography and patient age8. Self-practices with conventional and herbal drugs are common in ENT patients. Recent studies reported that the ENT patients’ self-practice with conventional medication ranged from 79.1–83%8,9. It is also reported that the rate of herbal drug utilization among ENT patients ranges from 2–63% in different nations4. Individuals may suffer serious consequences as a result of SM practices without consulting a medical expert1,2,8.
The self-practices of over-the-counter (OTC) drugs and nonpharmaceutical products (e.g., vitamins, herbal products, and dietary supplements) are frequently used by the Turkish population10. These medications are available without a prescription, and people perceived that they are safe and effective. However, these medications can have adverse effects like prescription drugs and be misused or abused because of their active ingredient10,11. Herbal and conventional medicine’s concomitant use can also cause dangerous herb-drug interactions12.
In Turkey, ENT illnesses impact people of all ages and are an important public health issue13–15. However, literature searches revealed that previously no research examined the self-practices with conventional and herbal drug use among ENT patients in our study healthcare setting as well as in Turkey. Periodic studies are critical for assessing the usage of self-based medication practices in ENT patients and to give current insight to healthcare policy makers. Therefore, this study was carried out to assess the self-practices with conventional and herbal drug use among ENT patients at a tertiary care hospital in Turkey.
METHODS
A cross-sectional questionnaire-based survey was carried out among all ENT outpatients on their first visit to the otorhinolaryngology department at the tertiary care hospital in Adana, Turkey, in November 2017. This study was approved by the university’s Ethical Review Committee, and the research was carried out in accordance with the Helsinki Declaration (meeting no: 69; date: October 6, 2017; Supplementary file 1).
Patients aged 17 years or older who attended an ENT department were included in the study, while respondents under the age of 17 and not willing to participate were excluded during the study period. This study used a convenience sampling technique. As per hospital data, an average of 750 patients visited the ENT department within 1 month. According to the Raosoft sample size calculator, the minimum calculated sample size was 255. The response distribution was assumed to be 50%, the margin of error was set at 5%, and the confidence level for the sample estimate was set at 95% (http://www.raosoft.com/samplesize.html).
A self-reported questionnaire was developed for this study based on a review of prior literature1,4,8,12. Three researchers reviewed the questionnaire instrument before the execution of the study to determine the appropriateness and validity (internal and external), along with the confirming adequacy of the questions. Data collection was conducted on a daily basis via a face-to-face approach. Informed consent was obtained from all participants.
The final 14-item questionnaire was divided into four sections:
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demographic,
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SM of conventional medicines,
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herbal medication usage, and
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perception regarding herbal medicines.
Demographic characteristics included age, gender, and education level. SM of conventional medicines included four questions regarding self-practices of conventional medication for ENT problems before visiting a hospital, types of medications, source of information, and their action regarding extra medications after the completion of treatment. The third section comprised four items regarding herbal medication use, types of herbal drugs, purpose of use, and source of information. The last section contained three questions related to the patient’s perception of herbal medicines. We also classify the herbal drugs according to the International Union for Conservation of Nature (IUCN) Red List (https://www.iucnredlist.org/).
The final data were collected and transferred to Microsoft Excel 365 (version 2108, Microsoft Corp., USA), and the findings were recorded in number and percentage form. The final results are presented in tabulated form.
RESULTS
Of the 255 questionnaires distributed among the patients who visited the ENT department during the study period, 183 completed the questionnaire, and the response rate was 71.7%. The reason given for not completing the questionnaire was lack of time in the clinic (n=69), while 13 questionnaires were excluded owing to incomplete data. Finally, this study included 183 patients with a mean age of 34.96 (SD ±15.81) years (Table 1). Notably, 82 (44.8%) patients reported SM before visiting a hospital. The most commonly used medicine was analgesics (31.7%) and antibiotics (21.9%). The participants also reported the combined use of different medication classes. Further details are listed in Table 1.Nearly half of the patients (49.2%, n=90) used at least one herbal drug. Most of the participants indicated the usage of more than one herbal drug. The most commonly used herbal medications were Tilia cordata (78.8%), Zingiber officinale (62.2%), and Camellia sinensis (45.5%). The IUCN Red List classified the majority of the therapeutic herbs in this study as data deficient/least concerning (Table 2).
Among herbal users, 52 (57.8%) patients reported the purpose of usage. The most cited purposes of herbal drug use were common cold (26.9%) and general well-being (11.5%). None of the patients reported a qualified healthcare professional as a source of information for herbal drugs in this study. Additional information is provided in Table 3.
DISCUSSION
Self-medication practices are widespread among otorhinolaryngological patients1,4,8,9. In this study, the prevalence of SM with conventional drugs was 44.8% among ENT patients before visiting a hospital. A study conducted in Nepal among ENT outpatients revealed similar results (47.3%)16. A higher prevalence (99%) of self-practices with conventional medicine was revealed in a study conducted in Lebanon9. However, a lower percentage (31%) of SM practices among patients attending the ENT department was observed in Nigeria17. The variation in the reported prevalence rate in this study compared to previous studies may be due to the differences in study methodology, cultural factors, populations, study design, and sample size. A considerable proportion of the population uses self-practice with conventional medication, and this is a concerning issue and may have the potential risks of adverse effect4.
The most commonly used medicine was analgesic and antibiotics. Participants also reported a combined usage of different medication classes. This finding was also supported by the studies conducted in Brazil and Lebanon8,9. According to a meta-analysis of analgesics, cough medicines, dermatological products, nutritional supplements, and antibiotics were the most commonly self-practiced therapeutic drugs18. It is reported that if analgesics, cold drugs, cough syrups, and other OTC drugs are not used properly, they might harm the patient’s quality of life and intensify the symptoms8,10,11. According to the World Health Organization, antibiotic resistance is currently one of the most serious threats to global health, food security, and development. Antibiotic resistance can affect anyone, regardless of age or place19. Antibiotic SM is a major contributor to the current antibiotic resistance dilemma19. Proper public health education is required to enhance public awareness about the dangers of SM of antibiotics, as well as legislation restricting access to OTC drugs10,11.
In this study, a substantial proportion of the patients (49.2%) stated the use of at least one herbal drug for ENT illnesses before visiting the hospital. A previously published study in Kenya also reported substantial levels of herbal drug use (37.3%) among ENT patients20. A recent small-scale study conducted among patients suffering from chronic tinnitus in Turkey also reported the use of herbal medicines21. It is reported that the frequency of herbal medicine practices varies greatly among regions, countries, and around the world due to societal, traditional, and disease types4,21.
Linden (T. cordata), ginger (Z. officinale), and green tea (C. sinensis) were the most frequently reported herbal medication approaches in this study. Recent review-based articles stated the effectiveness of Linden in anxiety, colds, cough, cardiovascular, and sore throat22. A Turkish study also found that linden (T. cordata) and sage (Salvia officinalis) were the most often utilized herbal medications23. Another study reported that linden was among the 10 most frequently used medicinal plants for health problems in Spain24. The effectiveness and use of Z. officinale in allergic rhinitis and oral cavity health problems were also reported25. It is reported that C. sinensis is a valuable natural source of antibacterial phytochemicals with multiple applications26. The effectiveness of medicinal herbs is dependent on proper use and preparation. The inappropriate use of herbal drugs may be responsible for adverse effects24,25. It is also important to highlight that the IUCN Red List classifies some of the medicinal plants consumed by the ENT patients in this study as data deficient/least concern. None of the herbal medications utilized by the participant in this study included the threatened/vulnerable/endangered category. Moreover, rigorous scientific proof of the effectiveness of phytotherapy in otorhinolaryngology is still lacking, and it is critical to be aware of the interactions with conventional treatment. However, further in-depth research, national and international legislation, and strict regulation are necessary for the controlled use, safety, and efficacy evaluation of these herbal drugs5,7,24.
Interestingly, in this study, the participants reported that pharmacists and doctors are the main sources of information for conventional therapy compared to neighbors/relatives/friends and the Internet. In contrast, the Internet, neighbors/relatives/friends, and media were the most cited sources for herbal medication usage. None of the patients reported a qualified healthcare professional as a source of information for herbal drugs in this study. A Turkish study revealed similar findings and indicated that media and social circles (neighbors/relatives/friends) were the primary sources of information for herbal medication21. Another study conducted in Spain also reported family/friends and the Internet as a frequently cited source by the participants24. According to the most recent 2020 estimate, Turkey has 54 million social media users, which could explain why so many respondents in our survey acquired knowledge regarding herbal use via the Internet26. Herbal products are commonly used to treat clinical illnesses and are routinely purchased online without the supervision of a healthcare provider. Due to widespread inflated claims of clinical efficacy and safety, the use of herbals is still controversial4. The information may be more conveniently available on Internet social media sites; however, there is a risk of misinformation and may lead to safety issues27.
Similar to other studies, this study also has limitations. The present findings may not be generalizable, especially since our study was based on a convenience sample of ENT patients recruited from a single hospital in Turkey. This may have biased the findings, such as an overestimation or underestimating of total conventional and herbal drug usage. This is a cross-sectional study with the limitation of only collecting data on all variables at one point in time, so no causal relationship could be inferred. Additionally, we did not inquire in depth about the participants’ demographic details, such as religion or income level, due to ethical concerns, which could have resulted in the omission of some confounding variables.
Despite these limitations, this study has some strengths. This is the first study to evaluate SM practices with conventional and herbal drugs among ENT patients in our healthcare setting. This study targeted both conventional and herbal medicines to self-medicate, and these results may serve as an excellent starting point for further investigation. This study also provides a baseline of local data regarding SM practices (conventional and herbal medicines), and the results may be beneficial for practical clinics, healthcare professionals, and policy makers.
CONCLUSIONS
This study observed a considerable prevalence of self-based practices with conventional and herbal medications in ENT patients who attended the general otolaryngology clinic. Strict national regulations on conventional and herbal medication access and long-term actions should be implemented to discourage inappropriate drug use. A patient education program concerning the effects of SM practices is also urgently needed.
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