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Normal Saline (0.9% NaCl)

Hennepin Healthcare Research Institute · FDA-approved active Small molecule

Normal saline is an isotonic crystalloid solution that restores intravascular volume and maintains electrolyte balance.

Normal saline restores and maintains fluid balance and electrolyte homeostasis by providing isotonic sodium chloride solution that matches plasma osmolality. Used for Hypovolemia and shock (hemorrhagic, septic, cardiogenic), Perioperative fluid maintenance and replacement, Dehydration and electrolyte imbalance.

At a glance

Generic nameNormal Saline (0.9% NaCl)
Also known asNormal saline, placebo, Isotonic Saline
SponsorHennepin Healthcare Research Institute
Drug classCrystalloid fluid / Electrolyte solution
ModalitySmall molecule
Therapeutic areaFluid and Electrolyte Management
PhaseFDA-approved

Mechanism of action

Normal saline (0.9% sodium chloride) is a sterile, isotonic fluid containing 0.9 g NaCl per 100 mL, matching the osmolality of blood plasma. It is administered intravenously to replace lost fluids, restore circulating volume, and maintain proper sodium and chloride concentrations. The solution distributes across intravascular and interstitial compartments to support tissue perfusion and cellular function.

Approved indications

Common side effects

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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