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.
1 Not all insulin types are available for use in insulin pen cartridges. 2  Insulin pens do not let you mix insulin types, which means that if the insulin mixture you need is not available as a pre-mix, two injections must be given - one for each type of insulin.  Insulin pens should only be used for self-injection.