Any solution of sodium chloride (NaCl) in water with a concentration of NaCl higher than that found in physiological saline (0.9% w/v).

What do you use hypertonic saline for?

Hypertonic Saline is a prescription medicine used to treat the symptoms of electrolyte and fluid replenisher used as a source of water and electrolytes. Hypertonic Saline may be used alone or with other medications. Hypertonic Saline belongs to a class of drugs called Mucolytics.

Is hypertonic saline safe?

Nebulised hypertonic saline appears to be safe and widely available at low cost. The quality of the evidence was low to moderate: there were inconsistencies in results among trials and risk of bias in some trials.