Drug Interaction Report

Xipamide and Lithium Carbonate: Interaction Details

A pharmacist-reviewed analysis of the Xipamide and Lithium Carbonate interaction: the documented clinical effects, severity rating, onset, mechanism, and management considerations, with cited references throughout.

AI-assisted, pharmacist-reviewed · Source data updated Aug 8, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature

Xipamide

No brand names on record
+

Lithium Carbonate

Lithobid
Dr. Brian Staiger, PharmD, BCPS
Medically reviewed by
Dr. Brian Staiger, PharmD, BCPS
Updated Aug 8, 2026
Editorial policy · Data sources
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Interaction severity
Major
Potentially serious — often needs a change or close monitoring.
How we grade severity & evidence

Severity levels

  • Contraindicated: These should generally not be used together.
  • Major: Potentially serious — often needs a change or close monitoring.
  • Moderate: Can be significant — usually manageable with monitoring.
  • Minor: Usually limited clinical impact.

Evidence grades

  • Established: Well documented — supported by controlled studies or strong clinical data.
  • Probable: Good supporting evidence, though not definitively proven.
  • Suspected: Some evidence suggests this interaction, but it is not well established.
  • Possible: Limited or conflicting evidence; the interaction may occur.
  • Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.

Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.

Of 49 documented Xipamide interactions, 35 are rated major — including this one.
Worried about symptoms right now? Contact your pharmacist or prescriber, or call Poison Control at 1-800-222-1222 (US). Call 911 for an emergency.
Onset
delayed
Evidence
theoretical
Severity
Major

What happens

Lithium toxicity

Interaction Deep Dive

Thiazide diuretics may affect renal function and increase serum lithium concentrations1567. If concomitant use is necessary, reduce the initial lithium dosage and titrate slowly to clinical response. Monitor serum lithium levels frequently and observe for signs and symptoms of lithium toxicity 1.

Why it happens (mechanism)

Unknown

Literature reports

3 reports — tap to read

a) The effects of concomitant administration of lithium with either furosemide or hydrochlorothiazide has been studied in 6 healthy volunteers. The subjects received lithium 300 mg 3 times daily for 9 days, furosemide 40 mg daily plus lithium for 14 days, lithium alone for 7 days, and lithium plus hydrochlorothiazide 50 mg daily for 14 days. Serum lithium was measured intermittently throughout the 44-day study. Of the 6 subjects, one withdrew after developing adverse effects during the lithium only portion of the study. During coadministration of lithium with hydrochlorothiazide, serum lithium levels rose significantly compared with the lithium alone phase and the lithium plus furosemide phase. Patients given thiazide diuretics may need a downward adjustment in lithium dosage to maintain acceptable serum lithium levels 2.

b) A 60-year-old woman developed lithium toxicity after the addition of a thiazide diuretic to control hypertension. The patient had taken lithium 600 mg twice daily and maintained serum lithium levels of 0.8 mEq/L to 1.2 mEq/L. Two weeks after hydrochlorothiazide 50 mg daily was added to the regimen, the patient developed insomnia, confusion, tremor, muscle fasciculations, dysarthria, and ataxia. The patient's serum lithium level was 3.9 mEq/L. After hemodialysis, the lithium level was 1.4 mEq/L but her mental status continued to deteriorate. The patient's condition gradually improved over the next 5 days with osmotic diuresis and supportive treatment 3.

c) A case of severe lithium toxicity (e.g., diarrhea, dyspnea, drowsiness, confusion, peripheral vasodilatation, and hyperreflexia) in a 51-year-old noninsulin dependent female patient with diabetes was reportedly caused by a thiazide diuretic and an angiotensin converting enzyme inhibitor. Lithium carbonate 1.6 g daily had been given for 7 years for manic depression, as well as glibenclamide 5 mg daily (18 months). Perindopril 8 mg daily and bendrofluazide 5 mg daily had been added for hypertension 3 months prior to presentation. Diarrhea, dyspnea, confusion, and hypotension developed over a two-week period. Her lithium level was 4.28 mmol/L on admission to the hospital, and her blood pressure was 80/60 mmHg. Dopamine and dobutamine were started but were not effective. Her blood pressure was eventually maintained with norepinephrine, epinephrine, and dobutamine at doses normally associated with marked alpha-adrenoceptor-mediated vasoconstriction. The patient became more alert when the lithium level dropped to 1.6 mmol/L following 3 hemodialysis sessions, and cardiovascular support was withdrawn 4.

Common questions

Can I take Xipamide and Lithium Carbonate together?

Lithium toxicity Always confirm with your pharmacist or prescriber before making any change.

How serious is the Xipamide and Lithium Carbonate interaction?

It is rated major. Potentially serious — often needs a change or close monitoring.

How quickly could this interaction happen?

The documented onset is "delayed". Effects tend to build up gradually over days to weeks.

How strong is the evidence for this interaction?

The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.

From our Q&A

Real reader questions about these medications, each personally answered by our pharmacist:

Questions for your pharmacist

  • Does my dose of Xipamide or Lithium Carbonate need adjusting while I take them together?
  • What symptoms should prompt me to call you or my prescriber right away?
  • Does the timing of my doses matter for this combination?
  • Is there a safer alternative to one of these medications for me?

References (7)

  1. Product Information: LITHOBID(R) oral extended release tablets, lithium carbonate oral extended release tablets. ANI Pharmaceuticals, Inc. (per FDA), Baudette, MN, 2016. DailyMed
  2. Jefferson JW & Kalin NH: Serum lithium levels and long-term diuretic use. JAMA 1979; 241:1134-1136. DOI
  3. Nurnberger JI Jr: Diuretic-induced lithium toxicity presenting as mania. J Nerv Ment Dis 1985; 173:316-318. PubMed
  4. Vipond AJ, Bakewell S, Telford R, et al: Lithium toxicity. Anaesthesia 1996; 51:1156-1158.
  5. Petersen V, Hvidt S, Thomsen K, et al: Effect of prolonged thiazide treatment on renal lithium clearance. Br Med J 1974; 3:143-145. PubMed
  6. Singer I & Rotenberg P: Mechanisms of lithium action. N Engl J Med 1973; 289:254. DOI
  7. Davis JM & Fann WE: Lithium. Ann Rev Pharmacol 1971; 11:285.
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Xipamide

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