What medicines are used to treat high potassium (hyperkalemia)?
High potassium is usually treated by lowering potassium quickly (especially if symptoms or ECG changes are present) and then preventing further rises. The main medicine categories are:
- Calcium (to protect the heart): Calcium gluconate or calcium chloride is commonly used when hyperkalemia is urgent to stabilize cardiac electrical activity. It does not remove potassium from the body, but it reduces the immediate risk of dangerous rhythm problems.[1]
- Medicines that push potassium into cells: Insulin with glucose, and sometimes inhaled albuterol (salbutamol), lower blood potassium temporarily by shifting potassium from blood into cells.[1]
- Potassium removal medicines: Diuretics (water pills) can increase potassium loss through urine in people who can pass urine. Potassium binders remove potassium through the gut:
- Sodium zirconium cyclosilicate (Lokelma)
- Patiromer (Veltassa)
- Older option: sodium polystyrene sulfonate (Kayexalate), used less often due to safety and effectiveness concerns compared with newer binders.[1]
When is urgent treatment needed?
Urgent treatment is usually started when potassium is high enough to threaten the heart or when there are ECG changes, fast rises in potassium, or symptoms. Calcium is the “stabilize first” medication, while insulin/glucose and other measures reduce potassium more rapidly.[1]
What’s the difference between Lokelma and Veltassa?
Both are potassium binders used to treat hyperkalemia, but they differ in how they’re taken and onset patterns:
- Lokelma (sodium zirconium cyclosilicate) can work relatively quickly to lower potassium, making it useful both for acute and maintenance settings depending on dosing and clinician judgment.
- Veltassa (patiromer) is also used for chronic management and prevention of recurrent hyperkalemia.
Both can bind potassium in the gastrointestinal tract to lower blood levels.[1]
What medicines might doctors use if kidney function is poor?
In people with reduced kidney function, the body cannot clear potassium well, so clinicians often combine approaches:
- Temporizing shifts (insulin/glucose, sometimes albuterol) if potassium is high or urgent.
- Long-term control with potassium binders (such as patiromer or sodium zirconium cyclosilicate).
- Adjusting diet and reviewing medications that raise potassium (for example, some blood pressure and heart failure drugs).[1]
Can supplements or common drugs cause high potassium?
Yes. High potassium often comes from reduced kidney excretion and/or medications. Common contributors include:
- ACE inhibitors and ARBs
- Spironolactone/eplerenone and other potassium-sparing diuretics
- Certain kidney-related or adrenal-related conditions
- Potassium supplements
- Some salt substitutes that use potassium chloride
Clinicians typically review the medication list to remove or reduce the cause when possible.[1]
Are there “home” remedies or only prescription medicines?
Potassium binders and other key treatments are prescription medicines. Diet changes may help prevent recurrence (for example, limiting high-potassium foods), but they usually do not replace urgent medical treatment when potassium is dangerously high or causing ECG changes.
Sources
- Drug information on hyperkalemia treatments (calcium, insulin/glucose, albuterol, diuretics, and potassium binders including patiromer and sodium zirconium cyclosilicate): Cleveland Clinic
If you share your potassium level (with units), your kidney function (if known), and whether you have any ECG changes or symptoms, I can help match which medicine categories are typically used for that situation.