Appropriate use of non-prescription ibuprofen: a survey of patients' perceptions and understanding

Unprescribed and unnoticed: Retrospective chart review of adverse events of interactions between antidepressants and over-the-counter drugs

Aim: To systematically evaluate prevalence and clinical characteristics of adverse effects of antidepressants and OTC drugs interactions in a retrospective chart review.

Methodology: Dataset of 1,145 registered adverse events were evaluated. Reports were selected for further analysis if pharmacoepidemiological avaluation indicated the presence of high probability of a causal relationship between antidepressants and OTC interaction and the occurrence of side effect. Following variables were extracted from the records: sex, age, medical comorbidities, antidepressant and other concomitant medications, clinical consequences ant the possible interaction mechanisms.

Results: 368 showed causal relationship with the simultaneous use of antidepressant with another drug. 15 adverse events (4%) were related to the use of OTC medicine, particularly omeprazole, diphenhydramine, Japanese ginkgo biloba, ibuprofen, diclofenac and sildenafil. All of the analysed side effects were categorized as the result of pharmacokinetic interactions. Here we report identified OTC drugs with corresponding antidepressants and clinical manifestations of DDI. Omeprazole: agomelatine (nausea, abnormal dreams), fluoxetine (extrapyramidal symptoms, paresthesias), sertraline (vertigo, yawning), escitalopram (oral vesiculation). Diphenhydramine: sertraline (diaphoresis, insomnia, vertigo), paroxetine (pruritus, headache), duloxetine (oropharyngeal pain). Japanese ginkgo biloba: citalopram (bradycardia), trazodone (vertigo, taste pervesion), mianserine (restless legs syndrome). Diclofenac: escitalopram (oral vesiculation), and fluoxetine (restless legs syndrome). Ibuprofen: agomelatine (anxiety and nausea), sertraline and omeprazole (QTc prolongation). Sildenafil: fluoxetine (genital oedema) and sertraline (myocardial infarction).

Conclusion: The use of OTC drugs by the patients should be monitored. Pharmacokinetic interactions between nonprescribed medicines and antidepressants may increase concentration and severity of side effects of latter ones.

Drug-Drug Interactions With Over-The-Counter Medicines: Mind the Unprescribed

BACKGROUND

This review provides a summary of the currently available clinical data on drug-drug interactions (DDIs) involving over-the-counter (OTC) medicines. It aims to educate and increase awareness among health care providers and to support decisions in daily practice.

METHODS

An extensive literature search was performed using bibliographic databases available through PubMed.gov. An initial structured search was performed using the keywords "drug-drug-interaction AND (over-the-counter OR OTC)," without further restrictions except for the language. The initial results were screened for all described DDIs involving OTC drugs, and further information was gathered specifically on these drugs using dedicated database searches and references found in the bibliography from the initial hits.

RESULTS

From more than 1200 initial hits (1972-June 2021), 408 relevant publications were screened for DDIs involving OTC drugs, leading to 2 major findings: first, certain types of drug regimens are more prone to DDIs or have more serious DDI-related consequences, such as antiretroviral, anti-infective, and oral anticancer therapies. Second, although most DDIs involve OTC drugs as the perpetrators, some prescription drugs (statins or phosphodiesterase-5 inhibitors) that currently have OTC status can be identified as the victims in DDIs. The following groups were identified to be frequently involved in DDIs: nonsteroidal anti-inflammatory drugs, food supplements, antacids, proton-pump inhibitors, H2 antihistamines, laxatives, antidiarrheal drugs, and herbal drugs.

CONCLUSIONS

The most significant finding was the lack of high-quality evidence for commonly acknowledged interactions. High-quality interaction studies involving different phenotypes in drug metabolism (cytochrome P450) and distribution (transporters) are urgently needed. This should include modern and critical drugs, such as oral anticancer medications and direct oral anticoagulants.

Factors Influencing Administration, Recognition, and Compliance of Medicine among Community Residents from Jilin Province, China: A Questionnaire Study

INTRODUCTION

To identify and analyze factors that influence administration, recognition, and compliance of medicine among community residents in Jilin Province, China.

METHODS

A survey was carried out among 2417 community residents in Jilin Province, China, to study their administration (CRA), recognition (CRR), and compliance (CRC) of medicine. Multivariate logistic regression analyses and chi-squared tests were performed to assess factors influencing CRA, CRR, and CRC.

RESULTS

Logistic analyses showed that gender, educational level, and occupation were influencing factors on CRA; age, educational level, smoking status, and health condition were influencing factors on CRR; and gender, age, occupation, and health condition were influencing factors on CRC.

CONCLUSIONS

CRA, CRR, and CRC are associated with specific lifestyles and social economic statuses of community residents. Attention should be paid to influencing factors in order to facilitate community pharmaceutical care, promote the rational use of drugs, and ensure the safe use of medications. This study explores the type and extent of professional services provided through community pharmacies in Jilin Province, China, and provides evidence for optimizing the quality of community pharmacy services.

A pilot study of decision factors influencing over-the-counter medication selection and use by older adults

BACKGROUND AND OBJECTIVES

Despite their availability without prescription, OTC medications pose a risk for significant harm for older adults due to higher likelihood of polypharmacy, drug interactions, and age-related physiological changes. The purpose of this study is to identify the individual decision factors that influence how older adults select and use over-the-counter medications.

METHODS

A pilot study was conducted with 20 community-dwelling older adults. Older adults met the interviewer at a regional mass merchandise store where they were given both pain and insomnia standardized scenarios. Participants described how they would select and then hypothetically use a given medication to treat the problem described in the scenario.

RESULTS

OTC medication selection and reported use were influenced by several person-level decision-making factors including: personal beliefs/knowledge about OTCs, assessment of the ailment, and medical constraints.

CONCLUSION

The findings from this investigation provide direction for interventions to address unsafe OTC medication selection by older adults.

Trends in the receipt of medicines information among Finnish adults in 1999-2014: a nationwide repeated cross-sectional survey

OBJECTIVE

The aim of this study was to examine long-term trends in the receipt of medicines information (MI) among adult medicine users from 1999 to 2014.

DESIGN

Repeated cross-sectional postal survey from the years 1999, 2002, 2005 and 2008-2014.

SETTING

Each study year, a new nationally representative sample of 5000 Finns aged 15-64 years was drawn from the Population Register Centre of Finland.

PARTICIPANTS

The range of annual respondents varied from 2545 to 3371 and response rates from 53% to 67%. Of the total responses (n=29 465), 64% were from medicine users (n=18 862, ranging by year from 58% to 68%).

OUTCOME MEASURES

Receipt of information on medicines in use within 12 months prior to the survey from a given list of consumer MI sources available in Finland.

RESULTS

Physicians, community pharmacists and package leaflets were the most common MI sources throughout the study period. Receipt of MI increased most from the Internet (from 1% in 1999 to 16% in 2014), while decreased most from physicians (62% to 47%) and package leaflets (44% to 34%), and remained stable from community pharmacists (46% to 45%) and nurses (14% to 14%). In 1999, of the medicine users 4% did not report receipt of MI from any of the sources listed in the survey, while this proportion had remarkably increased to 28% in 2014.

CONCLUSIONS

Healthcare professionals and package leaflets had still a dominating importance in 2014 despite the growing number of MI sources over time, but still a minority of adult medicine users reported receiving MI via the Internet in 2014. Worrying is that the proportion of adult medicine users who did not receive MI from any of the sources became seven fold during the study period.

Understanding older adults' medication decision making and behavior: A study on over-the-counter (OTC) anticholinergic medications

BACKGROUND

Older adults purchase and use over-the-counter (OTC) medications with potentially significant adverse effects. Some OTC medications, such as those with anticholinergic effects, are relatively contraindicated for use by older adults due to evidence of impaired cognition and other adverse effects.

OBJECTIVE

To inform the design of future OTC medication safety interventions for older adults, this study investigated consumers' decision making and behavior related to OTC medication purchasing and use, with a focus on OTC anticholinergic medications.

METHODS

The study had a cross-sectional design with multiple methods. A total of 84 adults participated in qualitative research interviews (n = 24), in-store shopper observations (n = 39), and laboratory-based simulated OTC shopping tasks (n = 21). Simulated shopping participants also rank-ordered eight factors on their importance for OTC decision making.

RESULTS

Findings revealed that many participants had concerns about medication adverse effects, generally, but were not aware of age-related risk associated with the use of anticholinergic medications. Analyses produced a map of the workflow of OTC-related behavior and decision making as well as related barriers such as difficulty locating medications or comparing them to an alternative. Participants reported effectiveness, adverse effects or health risks, and price as most important to their OTC medication purchase and use decisions. A persona analysis identified two types of consumers: the habit follower, who frequently purchased OTC medications and considered them safe; and the deliberator, who was more likely to weigh their options and consider alternatives to OTC medications.

CONCLUSION

A conceptual model of OTC medication purchase and use is presented. Drawing on study findings and behavioral theories, the model depicts dual processes for OTC medication decision making - habit-based and deliberation-based - as well as the antecedents and consequences of decision making. This model suggests several design directions for consumer-oriented interventions to promote OTC medication safety.

Receipt and use of spoken and written over-the-counter medicine information: insights into Australian and UK consumers' experiences

OBJECTIVES

To explore Australian and UK consumers' receipt and use of spoken and written medicine information and examine the role of leaflets for consumers of over-the-counter (OTC) medicines.

METHODS

Semistructured interviews were conducted with 37 Australian and 39 UK consumers to explore information received with their most recent OTC medicine purchase, and how information was used at different times post-purchase. Interviews were audio-recorded, transcribed verbatim and thematically analysed.

KEY FINDINGS

Similarities were evident between the key themes identified from Australian and UK consumers' experiences. Consumers infrequently sought spoken information and reported that pharmacy staff provided minimal spoken information for OTC medicines. Leaflets were not always received or wanted and had a less salient role as an information source for repeat OTC purchases. Consumers tended not to read OTC labels or leaflets. Product familiarity led to consumers tending not to seek information on labels or leaflets. When labels were consulted, directions for use were commonly read. However, OTC medicine information in general was infrequently revisited.

CONCLUSIONS

As familiarity is not an infallible proxy for safe and effective medication use, strategies to promote the value and use of these OTC medicine information sources are important and needed. Minimal spoken information provision coupled with limited written information use may adversely impact medication safety in self-management.

Consumer knowledge about over-the-counter NSAIDs: they don't know what they don't know

OBJECTIVE

To investigate consumers' knowledge about commonly purchased over-the-counter (OTC) products containing ibuprofen.

METHODS

Customers buying two popular OTC ibuprofen-containing products (Nurofen^™ or Nurofen Plus^™ ) were asked to complete a short survey assessing their knowledge about the products.

RESULTS

The survey was completed by 262 respondents, most of whom were older than 50 years of age; female; well-educated; with adequate functional health literacy. The majority correctly identified ibuprofen as an active ingredient and knew the correct intervals between doses. However, almost a third couldn't correctly identify the maximum daily dose and were unaware of some contraindications. Furthermore, fewer than half recognised potential side effects. Those who hadn't completed high school were significantly less likely to seek medical advice (when required) and significantly less likely to know when it was safe to take these products.

CONCLUSIONS

The gaps in consumer knowledge, especially about the maximum daily dose, contraindications and potential side effects may be placing consumers at risk of experiencing ibuprofen-related adverse events. Implications for public health: Improving consumer knowledge to address these gaps in their understanding about the safe use of popular OTC ibuprofen-containing products is an important public health concern.

Patients' Knowledge About Analgesic-Antipyretic Medications Purchased in Community Pharmacies: A Descriptive Study

The objective of this study was to describe the level of knowledge about paracetamol (acetaminophen), ibuprofen, and aspirin of subjects who purchased nonprescription medications containing one of these drugs. We conducted this cross-sectional descriptive study in 42 community pharmacies located in southwestern France between July and November 2013. A six-item self-administered questionnaire was used. Participants were asked to identify the active ingredient contained in 14 brand-name analgesic-antipyretics, to state the maximum daily dose of paracetamol, ibuprofen, and aspirin, the recommended first-line analgesic, and precautions of use or contraindications for paracetamol, ibuprofen, and aspirin. Among 576 participants, the identification of paracetamol ranged from 58% (for Dafalgan or Efferalgan) to 90% (for Doliprane), the identification of ibuprofen from 34% (for Nureflex) to 63% (for Nurofen), and the identification of aspirin was 70% (for Aspegic). The maximum recommended daily dose of paracetamol, ibuprofen, and aspirin was known by 58.3%, 17.7%, and 19.3% of participants, respectively, whereas 6.8%, 17.2%, and 13.2% stated supratherapeutic daily doses. Paracetamol was correctly stated as the first-line analgesic-antipyretic by 76.2% of participants. Knowledge on major precautions of use or contraindications was poor (45.8% and 53.6% for ibuprofen and aspirin use during pregnancy, and 14.1% for concurrent use of anticoagulants and ibuprofen). Purchasers of nonprescription analgesic-antipyretics had poor knowledge on the medication they purchased.

Public knowledge and factors associated with inappropriate analgesic use: a survey in Thailand

Objective

This study aims to evaluate knowledge of analgesics and factors associated with inappropriate analgesic use among the public.

Methods

The cross-sectional study was carried out in one large city in the south of Thailand. The survey was conducted using interview of people of age 16 or older. The questionnaire elicited information regarding knowledge, attitudes and behaviours on analgesic use including prevalence of taking paracetamol >4 g/day (overdosage) and not taking non-steroidal anti-inflammatory drugs (NSAIDs) with meals (inappropriate taking).

Key findings

Of 1982 participants, paracetamol overdose (n = 595) and inappropriate NSAID users (n = 751) were less likely to give correct answers about analgesics compared with appropriate users. The overdose use was inversely associated with knowledge on paracetamol (odds ratio (OR) 0.90; 95% confidence interval (CI), 0.83, 0.98) but directly associated with positive attitudes towards high dose taking (OR 2.15; 95% CI, 1.49, 3.11), and high frequency of analgesic use (OR 1.78; 95% CI, 1.24, 2.54). Inappropriate NSAID ingestion was inversely associated with knowledge on NSAIDs and directly associated with more commonly obtaining analgesics from community pharmacies (OR 0.87; 95% CI, 0.82, 0.92 and OR 1.27; 95% CI, 1.01, 1.61, respectively).

Conclusions

Poor knowledge, positive attitudes towards high dose or high frequency of analgesic consumption and the patterns of using drugs were associated with inappropriate analgesic use especially that of paracetamol.

Safety concerns in simultaneous use of prescription and 'over-the-counter' medicines- results of patient survey in Estonia

During the last decades, the share of population using prescription (Rx) medicines has considerably increased. With the wider introduction of self-medication and the use of over-the-counter (OTC) medicines, there is a real threat for drug-drug interactions between Rx and OTC medicines neither identified nor overseen by healthcare specialists.

The objectives of this survey were to ascertain how often, and for what conditions OTC and Rx medicines are used simultaneously, and to discuss possible health hazards connected with the concomitant use of these medicines.

This survey was designed as a descriptive, cross-sectional questionnaire-based interview which was conducted amongst pharmacy customers and patients in urban and rural areas of Estonia in between 2010–2012.

In total, 712 respondents participated in the survey. Of those, 50.4% reported concomitant use of Rx and OTC medicines during the survey. The simultaneous use of Rx and OTC medicines increased with age and the number of chronic diseases (both p < 0.001). Of chronic patients, 37.1% used Rx and OTC medicines on a daily basis over a four-week period before the survey, and considering reported chronic diseases and the most widespread OTC medicines, they could encounter drug-drug interactions between Rx medicines (e.g. antihypertensives, anti-inflammatory medicines) and OTC medicines (e.g. paracetamol, NSAID-s, herbal medicines and adsorbents).

The present survey revealed frequent concomitant use of Rx and OTC medicines. Especially vulnerable are chronic and elderly patients. In the future, both patients and healthcare specialists should pay more attention to possible drug-drug interactions of Rx and OTC medicines.

Sex differences in effects and use of anti-inflammatory drugs

Gender accounts for important differences in the incidence, prevalence, and course of many immunoinflammatory diseases. However, similar treatment strategies, such as the use of nonsteroidal anti-inflammatory drugs (NSAIDs) and tumor necrosis factor-α (TNF-α) inhibitors, have been advocated for both genders. Experimental studies found that molecular mechanisms of inflammation differ in males and females. In our chapter we summarize the data concerning gender-specific aspects about prevalence of use, drug survival, responsiveness, and adverse drug effects of NSAIDs and TNF-α inhibitors. Gender-related differences in the prevalence and course of many autoimmune diseases as well as differences in effects of anti-inflammatory drugs should be considered for the tailored treatment options for these patients.

Public's views on making decisions about over-the-counter medication and their attitudes towards evidence of effectiveness: a cross-sectional questionnaire study

OBJECTIVE

To explore factors which may influence consumers when making decisions in relation to over-the-counter (OTC) medication.

METHODS

Data were collected from members of the public using a face-to-face interviewer-administered structured questionnaire in 10 shopping centres.

RESULTS

1461 people participated (18.8% males, 81.2% females; ages ranged from under 20 to over 60). Perceived effectiveness, familiarity with the name or brand and safety of the medicine influenced decisions when buying an OTC medicine. Almost all respondents reported that knowledge of effectiveness of OTC medicines was based on previous use. If there was no scientific evidence from drug trials to support effectiveness of a product, but it would not cause harm, two-thirds would still try the product. Over 70% 'agreed/strongly agreed' that people should be able to decide for themselves what OTC medicine they want, irrespective of scientific evidence.

CONCLUSION

There was ambivalence regarding need for evidence of effectiveness when choosing an OTC medicine, with individual autonomy and safety taking precedence over evidence.

PRACTICE IMPLICATIONS

Pharmacists should be aware that patients' expectations in relation to OTC medicines may be in conflict with evidence-based practice.