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 osmolality of a body fluid increases as the ratio of solute to water molecules increases. Osmolality is expressed as so many milliosmoles per kilogram of water (mOsm/kg water). The osmolality of a fluid can be calculated by adding the values of its constituent solutes.