Background: Fixed dose combinations (FDCs) are commonly utilized yet frequently linked to adverse drug responses (ADRs), especially cutaneous symptoms. Self-medication exacerbates the likelihood of improper drug utilization and avoidable adverse drug reactions (ADRs).
Methods: Prospective observational research was undertaken over one year comprising 350 patients with cutaneous adverse drug reactions related to fixed-dose combinations. Demographic data, FDC types, self-medication habits, clinical patterns, and preventability (utilizing standard measures) were gathered and examined.
Results: Of the 350 patients, maculopapular rash was observed in 32% and urticaria in 25%, making them the predominant manifestations. Self-medication was observed in 42% of patients and shown a strong correlation with the prevalence of adverse drug reactions (p < 0.01). Approximately 55% of adverse drug reactions were classified as avoidable. Combinations of antibiotics and NSAIDs were the most prevalent offending fixed-dose combinations (FDCs).
Conclusion: Cutaneous adverse drug reactions resulting from fixed-dose combinations are prevalent and predominantly avoidable. Self-medication significantly contributes to their prevalence. Stringent regulation, patient education, and judicious prescribing are crucial to mitigate the incidence of adverse drug reactions (ADRs).
Fixed dose combinations (FDCs) are extensively utilized in clinical practice owing to their convenience, cost-effectiveness, and capacity to enhance patient adherence by minimizing pill load (1). Notwithstanding these benefits, the growing utilization of FDCs has elicited substantial safety apprehensions, especially with irrational combos and their prevalent accessibility as over-the-counter pharmaceuticals (2). In numerous contexts, these combinations are administered or ingested without sufficient clinical rationale, heightening the likelihood of adverse drug reactions (ADRs)(3).
Cutaneous adverse medication reactions are among the most commonly documented symptoms of drug-induced toxicity(4). They may exhibit a broad array of clinical manifestations, from minor disorders such as maculopapular rashes and urticaria to severe and sometimes fatal reactions, including Stevens–Johnson syndrome and toxic epidermal necrolysis (5). These reactions not only impact patient quality of life but may also necessitate hospitalization and intense care (6).
Self-medication exacerbates this problem, particularly in underdeveloped nations where regulatory oversight of drug distribution may be inadequate (7). Unrestricted access to drugs without a prescription promotes misuse, polypharmacy, and heightened exposure to potentially detrimental fixed-dose combinations (FDCs) (8). A significant percentage of these ADRs are deemed preventable through judicious prescribing, adequate patient education, and more stringent regulatory procedures (9).
This study is to assess the patterns of cutaneous adverse drug reactions (ADRs) linked to fixed-dose combinations (FDCs), focusing on the influence of self-medication and the preventability of these events (10). Comprehending these elements is crucial for enhancing drug safety and advocating for the judicious use of drugs (11).
METHODS
Study Design:
Prospective observational study
Study Duration:
1 year
Sample Size:
350 patients
Inclusion Criteria:
Exclusion Criteria:
Data Collection:
Statistical Analysis:
RESULTS
Table 1: Demographic Distribution
|
Variable |
Number (%) |
|
Total patients |
350 |
|
Male |
210 (60%) |
|
Female |
140 (40%) |
|
Mean age |
36 ± 12 years |
Table 2: Types of Cutaneous ADRs
|
ADR Type |
Frequency (%) |
p-value |
|
Maculopapular rash |
32% |
|
|
Urticaria |
25% |
|
|
Fixed drug eruption |
18% |
|
|
Stevens–Johnson Syndrome |
5% |
<0.05 |
|
Others |
20% |
Table 3: Self-Medication and ADR Association
|
Category |
Number (%) |
p-value |
|
Self-medication |
147 (42%) |
|
|
Prescribed |
203 (58%) |
<0.01 |
Table 4: Preventability of ADRs
|
Category |
Percentage |
p-value |
|
Preventable |
55% |
|
|
Probably preventable |
25% |
|
|
Not preventable |
20% |
<0.05 |
Table 5: Common Offending FDCs
|
Drug Class |
Percentage |
|
Antibiotic combinations |
40% |
|
NSAID combinations |
30% |
|
Steroid combinations |
15% |
|
Others |
15% |
Figure 1: side effects of the most commonly prescribed medications
Figure 2: Distribution of cutaneous ADRs due to FDCs
Figure 3: Self-medication vs prescribed drug use
Figure 4: Preventability of cutaneous ADRs
DISCUSSION
This study emphasizes the considerable burden of cutaneous adverse drug reactions linked to fixed-dose combinations. Maculopapular rash and urticaria were the predominant manifestations, aligning with prior data (12), (13). Despite the infrequency of severe reactions such as Stevens–Johnson syndrome, their clinical significance remains substantial.
An important finding was the elevated incidence of self-medication (42%), which demonstrated a statistically significant correlation with the occurrence of adverse drug reactions (p < 0.01)(14), (15). The unrestricted accessibility to fixed-dose combinations (FDCs) without a prescription fosters irrational drug utilization and heightens the likelihood of adverse effects(16).
The bar graphs indicate that maculopapular rash and urticaria are the predominant cutaneous adverse medication events linked to fixed dose combinations, although severe reactions such as Stevens–Johnson syndrome, albeit less prevalent, are clinically significant (17), (18). A significant percentage of patients indicated self-medication, highlighting its critical role in the incidence of adverse drug reactions (ADRs) (19), (20). The comparison indicates that prescribed usage is comparatively safer. The majority of adverse drug reactions (ADRs) were identified as preventable or likely preventable, highlighting deficiencies in rational prescribing and patient understanding (21), (22). These findings emphasize the necessity for more stringent regulation of FDCs and more public education to mitigate preventable adverse drug reactions (23).
Over fifty percent of the adverse drug reactions (ADRs) were deemed preventable, highlighting deficiencies in prescribing practices, patient awareness, and regulatory oversight (24), (25). Combinations of antibiotics and NSAIDs were the predominant culprits, perhaps because to their prevalent and frequently improper utilization (26),(27). The statistically significant p-values for essential variables bolster the credibility of the results (28). The findings underscore the necessity for more stringent drug laws, enhanced pharmacovigilance, and public awareness about the dangers of self-medication (29),(30).
CONCLUSION
Cutaneous adverse drug reactions resulting from fixed-dose combinations are prevalent and highly avoidable. Self-medication is a significant contributing factor and is strongly correlated with the development of adverse drug reactions (ADRs). Enhancing regulatory policies, advocating for judicious prescribing, and elevating public knowledge are critical measures to mitigate the impact of adverse drug reactions (ADRs). Ongoing pharmacovigilance and additional multicentric investigations are advised.
References
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