Is Sodium Safe with Hydrochlorothiazide?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Avoid high-sodium supplements or sodium-containing antacids. Report symptoms of low sodium such as headache, confusion, fatigue, or nausea immediately. Maintain a consistent moderate sodium diet as advised by your physician.
Why this interaction occurs
Thiazide diuretics inhibit sodium reabsorption in the distal tubule but can paradoxically cause dilutional hyponatremia, particularly in elderly patients and those who drink excess water. High sodium supplementation may disrupt careful fluid and electrolyte balance, worsening blood pressure control and potentially causing rebound fluid retention.
Evidence
Evidence level: moderate.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 215,975 reports mentioning Hydrochlorothiazide. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Hydrochlorothiazide + 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 Sodium interactions → · All Hydrochlorothiazide interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.