Nano-based drug delivery systems involve the use of nanocarriers to transport drugs directly to the target site within the body. These nanocarriers can be designed to release the drug in a controlled manner, ensuring that the medication is delivered precisely where it is needed, minimizing side effects, and maximizing therapeutic efficacy. This targeted approach can be particularly effective in treating infections, as it allows for higher concentrations of the drug at the infection site while reducing the risk of systemic toxicity.