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.
With this test, those with SIADH typically have decreased blood sodium and osmolality. They do not produce as much urine as expected, urine osmolality is high relative to serum osmolality, and the ADH concentration is in excess of what would be appropriate and does not decrease appropriately with water loading.