POTASSIUM CHLORIDE 10MEQ

Clinical safety rating: caution

Comprehensive clinical and safety monograph for POTASSIUM CHLORIDE 10MEQ (POTASSIUM CHLORIDE 10MEQ).

How it works

Potassium is the major intracellular cation. It is essential for the maintenance of intracellular tonicity, transmission of nerve impulses, contraction of cardiac, skeletal, and smooth muscle, and maintenance of normal renal function. Potassium chloride dissociates to provide potassium ions and chloride ions.

What the body does with it

Metabolism	Not metabolized; excreted primarily by the kidneys (90%) and to a small extent in feces via intestinal secretion.
Excretion	Primarily renal (≥90% of absorbed potassium is excreted via kidneys; small amounts lost in feces and sweat).
Half-life	Not applicable as potassium is an electrolyte; its elimination follows first-order kinetics with a terminal half-life of approximately 2–3 hours in healthy individuals, reflecting rapid redistribution and renal clearance.
Protein binding	Minimal; approximately 5–10% bound to albumin.
Volume of Distribution	0.5–1.0 L/kg; reflects distribution into total body water (intracellular and extracellular compartments).
Bioavailability	Oral: 90–100% (well absorbed from the gastrointestinal tract).
Onset of Action	Oral: 30–90 minutes; IV: immediate (within seconds to minutes) depending on infusion rate.
Duration of Action	Oral: sustained effect for 4–6 hours; IV: duration depends on infusion rate and ongoing losses, typically 1–2 hours after infusion stops.

Classification & Brands

Dosing & administration

10 mEq (1 tablet) orally once daily, titrated to serum potassium levels. Maximum 40 mEq per dose or 100 mEq per day.

Dosage form	INJECTABLE
Renal impairment	GFR 30-50 mL/min: reduce dose by 25%; GFR 10-29 mL/min: reduce dose by 50%; GFR <10 mL/min: avoid use or use with extreme caution.
Liver impairment	No specific adjustment recommended; monitor potassium levels closely in severe hepatic impairment (Child-Pugh C) due to risk of hyperkalemia.
Pediatric use	Neonates: 1-2 mEq/kg/day orally divided every 6-12 hours; Infants and Children: 1-3 mEq/kg/day orally divided every 6-8 hours, not to exceed 1 mEq/kg per dose or 40 mEq per dose.
Geriatric use	Start at lower end of dosing range (e.g., 10 mEq once daily); titrate slowly due to age-related decline in renal function and increased risk of hyperkalemia.

Use during pregnancy

1st trimester	Consult provider
2nd trimester	Consult provider
3rd trimester	Consult provider

Clinical note

Comprehensive clinical and safety monograph for POTASSIUM CHLORIDE 10MEQ (POTASSIUM CHLORIDE 10MEQ).

Breastfeeding	Potassium is normally present in breast milk; supplementation at therapeutic doses does not significantly alter milk concentration. M/P ratio not applicable as potassium is an endogenous ion. Considered compatible with breastfeeding.
Teratogenic Risk	No evidence of teratogenicity at therapeutic doses. Potassium chloride is a normal body constituent; excessive maternal hyperkalemia may cause fetal arrhythmias or acidosis. Risk not increased above baseline.
Fetal Monitoring

Warnings & precautions

■ FDA Black Box Warning

Potassium chloride injections are concentrated and must be diluted before use to avoid fatal hyperkalemia and cardiac arrest. Accidental injection of undiluted potassium concentrate can be fatal.

Side Effect Profile

Serious Effects

Absolute Contraindications

["Hyperkalemia","Severe renal impairment with oliguria or anuria","Crush syndrome","Adrenal insufficiency","Acute dehydration","Extensive tissue breakdown (e.g., severe burns)"]

Clinical Precautions

Precautions

["Hyperkalemia risk: monitor serum potassium, ECG, and renal function","Avoid rapid intravenous administration","Use with caution in patients with renal impairment, cardiac disease, or conditions predisposing to hyperkalemia","Gastrointestinal irritation with oral formulations"]

Clinical Tips & Counseling

Drug interactions

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POTASSIUM CHLORIDE 10MEQ

Clinical safety rating: caution

Comprehensive clinical and safety monograph for POTASSIUM CHLORIDE 10MEQ (POTASSIUM CHLORIDE 10MEQ).

How it works

What the body does with it

Metabolism	Not metabolized; excreted primarily by the kidneys (90%) and to a small extent in feces via intestinal secretion.
Excretion	Primarily renal (≥90% of absorbed potassium is excreted via kidneys; small amounts lost in feces and sweat).
Half-life	Not applicable as potassium is an electrolyte; its elimination follows first-order kinetics with a terminal half-life of approximately 2–3 hours in healthy individuals, reflecting rapid redistribution and renal clearance.
Protein binding	Minimal; approximately 5–10% bound to albumin.
Volume of Distribution	0.5–1.0 L/kg; reflects distribution into total body water (intracellular and extracellular compartments).
Bioavailability	Oral: 90–100% (well absorbed from the gastrointestinal tract).
Onset of Action	Oral: 30–90 minutes; IV: immediate (within seconds to minutes) depending on infusion rate.
Duration of Action	Oral: sustained effect for 4–6 hours; IV: duration depends on infusion rate and ongoing losses, typically 1–2 hours after infusion stops.

Classification & Brands

Dosing & administration

10 mEq (1 tablet) orally once daily, titrated to serum potassium levels. Maximum 40 mEq per dose or 100 mEq per day.

Dosage form	INJECTABLE
Renal impairment	GFR 30-50 mL/min: reduce dose by 25%; GFR 10-29 mL/min: reduce dose by 50%; GFR <10 mL/min: avoid use or use with extreme caution.
Liver impairment	No specific adjustment recommended; monitor potassium levels closely in severe hepatic impairment (Child-Pugh C) due to risk of hyperkalemia.
Pediatric use	Neonates: 1-2 mEq/kg/day orally divided every 6-12 hours; Infants and Children: 1-3 mEq/kg/day orally divided every 6-8 hours, not to exceed 1 mEq/kg per dose or 40 mEq per dose.
Geriatric use	Start at lower end of dosing range (e.g., 10 mEq once daily); titrate slowly due to age-related decline in renal function and increased risk of hyperkalemia.

Use during pregnancy

1st trimester	Consult provider
2nd trimester	Consult provider
3rd trimester	Consult provider

Clinical note

Comprehensive clinical and safety monograph for POTASSIUM CHLORIDE 10MEQ (POTASSIUM CHLORIDE 10MEQ).

Breastfeeding	Potassium is normally present in breast milk; supplementation at therapeutic doses does not significantly alter milk concentration. M/P ratio not applicable as potassium is an endogenous ion. Considered compatible with breastfeeding.
Teratogenic Risk	No evidence of teratogenicity at therapeutic doses. Potassium chloride is a normal body constituent; excessive maternal hyperkalemia may cause fetal arrhythmias or acidosis. Risk not increased above baseline.
Fetal Monitoring

Warnings & precautions

■ FDA Black Box Warning

Potassium chloride injections are concentrated and must be diluted before use to avoid fatal hyperkalemia and cardiac arrest. Accidental injection of undiluted potassium concentrate can be fatal.

Side Effect Profile

Serious Effects

Absolute Contraindications

["Hyperkalemia","Severe renal impairment with oliguria or anuria","Crush syndrome","Adrenal insufficiency","Acute dehydration","Extensive tissue breakdown (e.g., severe burns)"]