"Additional potassium" refers to an extra amount of a vital mineral called potassium that is added to something.
Full definition
Ringer's lactate containing 5 % lactose and
additional potassium components should be administered; nutrients, such as calories, proteins, minerals, vitamins etc and these should be administered intravenously.
If you are using one of the formulated diets for renal failure, such as Hill's k / d diet or Purina's NF diet it may not be necessary to
supplement additional potassium, though.
This is a significant concern for people whose kidneys are not fully functional, as
the additional potassium will not be effectively removed from the body.