Lice Treatment: Examples of Over-the-Counter Products. Lice Treatment: Examples of Over-the-Counter Products. Lice Treatment: Examples of Over-the-Counter Products. There are quite a few over-the-counter products that claim to kill lice or their eggs (nits). Permethrin 1% creme rinse (such as Nix). Pyrethrins and piperonyl butoxide shampoo (such as RID).
In general, if someone has an increased serum osmolality, it is due to either decreased water in the blood or increased solutes. If the person has decreased serum osmolality, it is due to increased fluid levels.
The status of water homeostasis in the body is efficiently reflected by the serum sodium concentration. Sodium is the dominant cation in extracellular fluid and the primary determinant of serum osmolality. If a change in the total-body water concentration occurs without an accompanying change in total-body solute, osmolality changes along with the serum sodium concentration. Simply put, hypernatremia and hyponatremia are primary disturbances of free water and reflect pathologic alterations in water homeostasis.