Potassium Chloride · Potassium Gluconate · Potassium Citrate
Primary electrolyte lost during GLP-1 vomiting and diarrhea — routinely under-replaced.
FDA
Approved
WADA
Not Listed
HALF-LIFE
N/A (mineral)
ROUTE
Oral
SCHEDULE
Daily with meals
In Plain English
Primary electrolyte lost during GLP-1 vomiting and diarrhea — routinely under-replaced.
Status & Legality
What do these mean?Electrolyte repletion
Cardiac rhythm support
Muscle contraction
GLP-1 side effect management
Potassium is the primary intracellular electrolyte and is essential for cardiac rhythm, muscle contraction, and cellular fluid balance. GLP-1 side effects — nausea, vomiting, diarrhea — cause significant potassium loss that most users don't replace. The FDA limits standalone OTC potassium to 99 mg per serving, meaning food sources and potassium-rich electrolyte formulas are the primary repletion strategy.
GI irritation at high supplement doses — always take with food
Hyperkalemia at excessive doses (cardiac arrhythmia risk)
Contraindicated at high doses with ACE inhibitors/ARBs
Safe at dietary levels for most people
Relying on OTC potassium capsules as the primary strategy — FDA limits OTC potassium to 99 mg/serving; food sources are the only practical way to reach daily targets
Not recognizing early GLP-1 fatigue and muscle weakness as hypokalemia — users often attribute low potassium symptoms to the peptide rather than electrolyte depletion
Supplementing aggressively while on ACE inhibitors, ARBs, or potassium-sparing diuretics — serious hyperkalemia risk
ACE inhibitors and ARBs — significantly increase potassium retention; hyperkalemia risk with supplementation is serious
Potassium-sparing diuretics (spironolactone, amiloride) — serious hyperkalemia risk; do not supplement potassium
Digoxin — potassium levels directly affect digoxin toxicity thresholds; monitor closely
Potassium is the GLP-1 electrolyte most users under-replace because the supplement doses are FDA-capped at 99 mg — far below daily needs. The solution is food: avocado, sweet potato, and salmon are the most practical high-potassium foods to add daily. If GI side effects are active, an electrolyte powder with 200+ mg potassium bridges the gap.
SEMAGLUTIDE
FDA-approved GLP-1 agonist — weight loss and blood sugar control.
ELECTROLYTE POWDER
Single-packet fix for the sodium, potassium, and magnesium loss driving early GLP-1 fatigue.
MAGNESIUM GLYCINATE
The most tolerated magnesium form — critical electrolyte depleted on GLP-1 protocols.
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Sources & Studies