What is the common adverse drug reaction associated with Azithromycin?

Azithromycin is an antibiotic belonging to the macrolide class that is commonly used to treat various bacterial infections. One of the well-recognized adverse drug reactions associated with Azithromycin is gastrointestinal upset, which includes symptoms such as diarrhea, nausea, and vomiting. These effects are particularly significant as they can affect patient adherence to the medication regimen.

Diarrhea is often reported due to the disruption of normal gut flora caused by the antibiotic, leading to changes in bowel habits. Nausea and vomiting may occur due to the irritative effect of the drug on the gastrointestinal tract or as a result of its pharmacological activity. All of these factors contribute to why option B accurately reflects the common side effects associated with Azithromycin.

In comparison, while headaches and rashes can occur with various medications (like those listed in the first option), they are not as frequently reported for Azithromycin specifically. Dry mouth, dizziness, and constipation may be seen with other medications, but they are not typical adverse effects linked to Azithromycin. Similarly, fatigue, insomnia, and swelling are more commonly associated with different drug classes or specific patient conditions rather than Azithromycin itself. Thus, option B stands out as the most relevant and commonly observed adverse