Mineral

Chloride

Chloride (Cl⁻)

Evidence TierAWADA NOT PROHIBITED

tuneTypical Dose

1,500-2,300 mg per day (typically from salt)

watchEffect Window

Acute correction within hours once chloride and fluid deficits are addressed.

check_circleCompliance

WADA NOT PROHIBITED

Overview

Clinical Summary

Chloride is an essential electrolyte and a component of gastric hydrochloric acid. It is used to support fluid balance and digestion, particularly when losses occur through heavy sweating or illness.

Adequate chloride supports hydration status, acid-base balance, and stomach acid production for digestion. Replacing losses can improve symptoms of dehydration and help normalize electrolyte balance in specific scenarios. Minority clinical use includes correcting metabolic alkalosis under supervision. For most diets, chloride needs are met through salt and common foods.

Most abundant extracellular anion. Works with sodium to maintain osmotic pressure, blood volume, and acid-base balance. Critical component of gastric HCl.

Outcomes

What This Is Expected To Influence

Primary Outcomes

Extracellular fluid homeostasis
Acid-base balance

Secondary Outcomes

Gastric acid production (HCl)

Safety

Contraindications and Interactions

Contraindications

Severe kidney disease
Unmanaged hypertension

Side effects

Elevated blood pressure at high intake (via sodium chloride)
Hyperchloremia with excessive supplementation

Interactions

Loop and thiazide diuretics alter chloride losses
Sodium and potassium intake interact with chloride balance

Avoid if

Salt-sensitive hypertension

Evidence

Study-level References

chloride-SRC-001Clinical review

Sourceopen_in_new

Yunos NM, Bellomo R, Story D, Kellum J. Bench-to-bedside review: Chloride in critical illness. Crit Care. 2010;14(4):226.

Population: Critically ill adults (review scope)

Dose protocol: Review of chloride exposure from clinical fluids and electrolyte management strategies

Key findings: Chloride is central to extracellular fluid homeostasis and acid-base physiology. Dyschloremia (low or high) is clinically meaningful and excess chloride load can contribute to hyperchloremic acidosis and fluid-related complications.

Notes: Evidence strongly supports essential physiologic role and deficiency correction. Performance/nootropic effects beyond repletion are not established.

Paper content

Chloride is central to extracellular fluid homeostasis and acid-base physiology; dyschloremia (low or high) is clinically meaningful and excess chloride load can contribute to hyperchloremic acidosis and fluid-related complications.