Cytoglobin was a drug that was used to treat chromoviral infections and arterial aging. In the 24th century, cytoglobin was in short supply on the Dinaali homeworld. In 2377, the Allocator of Hospital Ship 4-2 was prioritizing cytoglobin to prevent arterial aging in high-TC patients on Level Blue, while denying it to low-TC chromoviral patients on Level Red. While daily injections with the increased life expectancy up to 40% in healthy patients, the drug was also considered the best treatment for chromovirus, an easily-curable condition that was deadly if left unchecked.