Medical Definition of melanin. : any of various black, dark brown, reddish brown, or yellow pigments of animal or plant structures (as skin, hair, the choroid, or a raw potato when exposed to air); especially : any of numerous animal pigments that are essentially polymeric derivatives of indole formed by enzymatic modification of tyrosine.
An intermediate- or long-acting insulin is often prescribed with NovoLog. NovoLog can be mixed with insulin NPH (intermediate-acting insulin), but always draw NovoLog into the syringe first. Never mix NovoLog with Lantus. Do not mix NovoLog with other insulins if using an insulin pen or external pump. Do not vigorously shake insulin before use.
Insulin can be administered using an insulin pen that is designed for reuse on a single patient. It can also be administered using a needle and syringe after drawing up contents from an insulin vial. 1  Insulin Pens: Insulin pens are pen-shaped injector devices for insulin that are intended for use by a single person.