Nutrient depletion·Potassium·Reviewed June 9, 2026
What depletes potassium?
12 medications in the NutriStack database are documented to lower Potassium with ongoing use, most notably Bisacodyl, Furosemide, and Torsemide. The pattern spans 9 drug classes. Depletion builds slowly and is easy to miss; the table below shows how each medication drives it and which biomarker to check. Never start a replacement supplement without your prescriber's input.
Potassium depletion at a glance.
A quick, data-grounded summary. The per-medication table is below.
12 medications in the NutriStack database are documented to lower Potassium with ongoing use, most notably Bisacodyl, Furosemide, and Torsemide. The pattern spans 9 drug classes. Depletion builds slowly and is easy to miss; the table below shows how each medication drives it and which biomarker to check. Never start a replacement supplement without your prescriber's input.
What is documented to lower potassium.
Worst documented severity first. Open any medication for its full interaction and depletion guide. Absence from this table means no documented record, not proven safety.
| Medication | Severity | How it lowers potassium | Monitor |
|---|---|---|---|
| Bisacodyl Stimulant Laxative | Significant | Stimulant laxative overuse can increase intestinal potassium loss through diarrhea and colonic electrolyte wasting. | Serum potassium |
| Furosemide Loop Diuretic | Significant | Loop diuresis can sharply increase distal sodium delivery and urinary potassium secretion, creating clinically important potassium wasting that... | Serum potassium + kidney function |
| Torsemide Loop diuretic | Significant | Loop diuretics increase distal sodium delivery and urinary potassium loss. | Serum potassium |
| Chlorthalidone Thiazide-Like Diuretic | Moderate | Thiazide diuresis can increase distal sodium delivery and urinary potassium secretion, so potassium should be monitored rather than self-repleted. | Serum potassium + kidney function |
| Dexamethasone Corticosteroid | Moderate | Systemic corticosteroids can promote potassium loss or shifts in susceptible patients, especially at higher doses or with other hypokalemia risks;... | Serum potassium + kidney function |
| Hydrochlorothiazide Thiazide Diuretic | Moderate | Thiazide diuresis can increase distal sodium delivery and urinary potassium secretion, so potassium should be monitored rather than self-repleted. | Serum potassium + kidney function |
| Losartan/Hydrochlorothiazide Angiotensin II receptor blocker plus thiazide diuretic (fixed-dose combination) | Moderate | Hydrochlorothiazide increases urinary potassium loss, although losartan may offset or reverse this in some patients. | Serum potassium |
| Methylprednisolone Corticosteroid | Moderate | Systemic corticosteroids can promote potassium loss or shifts in susceptible patients, especially at higher doses or with other hypokalemia risks;... | Serum potassium + kidney function |
| Prednisolone Corticosteroid | Moderate | Systemic corticosteroids can promote potassium loss or shifts in susceptible patients, especially at higher doses or with other hypokalemia risks;... | Serum potassium + kidney function |
| Prednisone Corticosteroid | Moderate | Systemic corticosteroids can promote potassium loss or shifts in susceptible patients, especially at higher doses or with other hypokalemia risks;... | Serum potassium + kidney function |
| Voriconazole Triazole antifungal | Moderate | Hypokalemia is a recognized adverse effect listed in voriconazole prescribing information and reported in clinical use. It commonly arises in the... | Serum potassium |
| Vancomycin Glycopeptide antibiotic | Mild | Vancomycin-associated acute kidney injury and renal tubular injury can impair potassium reabsorption and lead to renal potassium loss; this is... | Serum potassium (alongside serum creatinine and renal function) |
If you need to restore potassium.
Repletion is not automatic: dose, form, and timing depend on the medication involved, and some pairings need separation from the very drug causing the depletion. Confirm with your prescriber before adding potassium.
Common potassium depletion questions.
Quick answers drawn from the table above.
Which medications deplete potassium?
12 medications in the NutriStack database are documented to lower potassium, including Bisacodyl, Furosemide, Torsemide, Chlorthalidone, and Dexamethasone. Severity differs by drug; the full table with mechanisms and monitoring biomarkers is on this page.
How do I know if my potassium is low?
The biomarkers used to track potassium status in this context include Serum potassium, Serum potassium + kidney function, and Serum potassium (alongside serum creatinine and renal function). If you take one of the medications above long term, ask your prescriber whether checking is worthwhile; depletion develops gradually.
Should I take a potassium supplement with these medications?
Not automatically. Documented depletion makes repletion worth discussing, but the right answer depends on your labs, dose, and the specific drug. Bring it up with your prescriber or pharmacist.
Check your whole stack
See what your medications deplete.
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