Which of the following is NOT a characteristic of aminoglycosides?

• A. Effective against resistant bacteria
• B. Utilized in severe infections
• C. Generally administered orally
• D. Exhibits ototoxic effects

Answer: (C)

Aminoglycosides are a class of antibiotics commonly used to treat serious infections caused by aerobic Gram-negative bacteria. They are well-known for their effectiveness against resistant strains of bacteria and are used in severe infections, particularly in cases where other antibiotics may not be effective.

One of the key characteristics of aminoglycosides is that they are not typically administered orally. This is primarily due to poor absorption from the gastrointestinal tract; therefore, they are usually given via injection (intravenously or intramuscularly) to ensure adequate serum levels and effectiveness. This is why the option indicating they are generally administered orally is not applicable to aminoglycosides.

Additionally, aminoglycosides do have the potential for ototoxic effects, which is a significant consideration when prescribing these medications, underscoring their narrow therapeutic window. Understanding the pharmacokinetics and administration routes of aminoglycosides is crucial for safe and effective use in clinical practice.