A variety of nanomaterials can be employed for medication delivery. Encapsulating medications within nanoparticles, which can then be given to specific places in the body, is a popular strategy. Because of their small size, nanoparticles can travel more efficiently through the body and can also be tailored to release the therapeutic payload in a controlled manner. Some nanomaterials can also respond to external stimuli such as temperature or pH changes, triggering medication release at specific sites. These are only a handful of the numerous applications for medicine delivery that nanoparticles have. A nice illustration are carbon nano-onions. Carbon nano-onions are a special sort of carbon nanomaterial with an onion-like structure. They have medical applications, particularly in drug delivery. Carbon nano-onions’ small size and the unique structure allows them to be easily taken up by cells, making them an ideal vehicle for delivering medications to specific sites in the body. They are also easily modifiable in order to attach certain molecules, allowing for targeted distribution to specific cells or regions. Furthermore, carbon nano-onions have shown promise as an imaging and diagnostic tool. They can be used to improve contrast in medical imaging, allowing for better diagnosis and treatment. Overall, carbon nano-onions have the potential to transform medicine and medication delivery by opening up new avenues for targeted and effective therapies for a wide range of diseases and ailments. The authors explore and describe the use of nano-onions for medication delivery. Also examples of applications for the treatment of cancer and infections are provided.