Which of the following is an expected adverse effect of tetracycline (Sumycin)?

Tetracycline is a broad-spectrum antibiotic often used to treat various bacterial infections. One of the commonly reported adverse effects associated with tetracycline is gastrointestinal upset, which can manifest as nausea, vomiting, or an upset stomach. This is due to the impact of the medication on the gastrointestinal tract, which can cause irritation or alter gut flora.

Recognizing the risk of gastrointestinal side effects is crucial, as it informs patients about what to expect when they begin treatment. This understanding allows for better management of these symptoms, including taking the medication with food, if recommended, to minimize discomfort.

The other options, while they can occur with various medications or conditions, are not specifically characteristic of tetracycline. For instance, while shortness of breath, rash, and swelling can occur due to allergic reactions or other factors, they are not common adverse effects associated with tetracycline itself. Understanding these expected side effects enables better patient counseling and adherence to therapy.