Is Potassium Safe with Lisinopril?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Avoid potassium supplements unless explicitly prescribed by your doctor. Monitor serum potassium levels regularly and report muscle weakness, irregular heartbeat, or numbness immediately.
Why this interaction occurs
ACE inhibitors block angiotensin II-mediated aldosterone secretion, reducing renal potassium excretion. Adding exogenous potassium supplements significantly raises the risk of hyperkalemia, which can cause life-threatening cardiac arrhythmias.
Evidence
Evidence level: strong.
Data source
PubMed: PMID 28416926
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 323,131 reports mentioning Lisinopril. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Lisinopril + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
All Potassium interactions → · All Lisinopril interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.