Introduction The use of antibiotics such as oral clindamycin has been effective in treating bacterial infections. However, this medication often comes with significant side effects, particularly those affecting the gastrointestinal (GI) system. This studyaims to evaluate the impact of different doses of clindamycin on GI health, specifically examining side effects like stomach upset, diarrhea duration, stomach pain, and recovery time. Given that clindamycin is frequently prescribed, understanding its impact on the oral-gut axis is critical to optimizing antibiotic therapy and reducing adverse events. Background Clindamycin, a lincosamide antibiotic, is widely used to treat a variety of bacterial infections. It acts by inhibiting bacterial protein synthesis but, like many antibiotics, also has unintended consequences for human gut health. The oral-gut axis represents a complex connection where antibiotics, such as clindamycin, can significantly alter the microbiota, leading to imbalances that manifest as diarrhea, abdominal pain, and other digestive issues. This study aims to explore these effects in depth by comparing two common doses of clindamycin, 300 mg versus 600 mg, and the impact of each dose on the severity and duration of GI side effects. Materials and methods This study involves 45 patients prescribed clindamycin for various bacterial infections. The patients were evaluated in two groups: 22 patients who received 300 mg and 23 patients who received 600 mg. Treatment duration ranged from seven to 10 days. Data collection focused on patient-reported symptoms, including the presence and duration of stomach upset, the length of diarrhea episodes, the persistence of stomach pain, and the overall recovery time. Statistical analysis included independent t-tests to compare symptom severity between the groups and chi-squared tests to assess differences in the incidence of side effects, while regression analysis was used to examine predictors of prolonged GI symptoms. Results The results of the study showed that 98% of patients experienced some side effects from oral clindamycin. Among those receiving the 600 mg dose, the frequency and severity of side effects were significantly higher compared to the 300 mg group. Specifically, the average duration of diarrhea in the 600 mg group was five days, compared to three days in the 300 mg group. Similarly, the average length of stomach pain in the higher dose group was seven days, compared to four days for those taking the lower dose. Chi-squared analysis indicated a significant association between the higher dose and increased incidence of GI symptoms. Regression analysis further showed that the 600 mg dose was a significant predictor of prolonged GI disturbances, underscoring a dose-dependent relationship. Conclusion The findings of this case study highlight that oral clindamycin, particularly at higher doses, is associated with increased GI side effects, including prolonged diarrhea and stomach pain. Almost all patients experienced side effects, with those on the 600 mg dose suffering more severe and prolonged symptoms compared to those on the 300 mg dose. The results suggest avoiding the prescription of oral clindamycin unless absolutely necessary, to reduce adverse outcomes and improve compliance. It is recommended to prioritize first-line antibiotics and reserve oral clindamycin as a secondary option. Further research is needed to investigate strategies for prescribing.
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