Which of the following statements is true regarding antibiotics?

The statement regarding the treatment of some bacterial diseases with anti-microbial drugs or anti-toxins is accurate because it acknowledges the complexity of bacterial infections. Certain bacterial diseases may not respond to antibiotics alone due to the presence of toxins produced by the bacteria that can lead to severe symptoms. In such cases, anti-toxins can neutralize these toxins while antimicrobial drugs target the bacteria directly. This multifaceted approach is often essential for managing infections caused by specific pathogens.

It's important to understand that antibiotics are specifically designed to target bacteria, which makes them ineffective against viral infections, and thus option C is incorrect. Moreover, not all bacterial infections can be effectively treated with a single antibiotic; some may require combinations of different antibiotics to ensure efficacy, making option A misleading. Lastly, while antibiotics can be beneficial, they do come with potential side effects, such as allergic reactions, disruption of normal flora, or the development of antibiotic resistance, which renders option D false.