Hydrochlorothiazide and Lithium: what the published research says
PubMed indexes 8 records that name Hydrochlorothiazide and Lithium together, either in the title or in an interaction, co-administration, or pharmacokinetic context. Each one is listed below with its study design and, where the abstract states one, the authors’ own conclusion, quoted and linked. This page reports that literature. It does not tell you whether to combine them.
Every statement below is attributed to a named, dated, linked source.
This page lists published research relevant to Hydrochlorothiazide and Lithium. It deliberately does not state whether the combination is safe, whether it interacts, in which direction, at what dose, or how far apart to take them.
A study appearing here is not proof that an interaction exists. Two substances can be named together in a paper that never tested them in combination, and a source listed as background may cover only one of them.
Findings are quoted from each abstract as the authors wrote them. NutriStack has not re-analysed, pooled, or reconciled them, and they may disagree with each other.
NutriStack’s own interaction assessment for this pair is not published here. It has not completed qualified-human clinical review, so it is withheld from search. See the publication gate.
Nothing here is medical advice. Decisions about prescription medication and supplements belong with your prescriber or pharmacist, who can see your full regimen.
The research
8 studies naming Hydrochlorothiazide and Lithium.
Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.
“The observed differences between diuretics in effects on serum lithium may have been due to differences in the potency of the diuretics at the doses studied as well as in the site of action of the diuretic effect. The results must be interpreted cautiously, however, because the effects were small and of questionable clinical significance, and the study used healthy volunteers and low doses of lithium instead of psychiatric patients and the usual therapeutic levels of lithium.”
Names both Hydrochlorothiazide and Lithium in its title.
Postgraduate medical journal · 1980 · PMID 7267481
Case ReportsHuman subjects
“Reduced clearance of lithium has been reported to follow its concurrent administration with diuretics that deplete both sodium and potassium. A combination of triamterene with thiazide has not been shown previously to precipitate lithium toxicity.”
Names both Hydrochlorothiazide and Lithium in its title.
American journal of physiology. Renal physiology · 2014 · PMID 24352504
Animal study
“HCTZ treatment further resulted in reduced blood Li levels, creatinine clearance, and alkalinized urinary pH. Our in vitro and in vivo data indicate that part of the antidiuretic effect of HCTZ in Li-NDI is NCC independent and may involve a tubuloglomerular feedback response-mediated reduction in glomerular filtration rate due to proximal tubular carbonic anhydrase inhibition.”
Names both Hydrochlorothiazide and Lithium in its title.
Journal of the American Society of Nephrology : JASN · 2004 · PMID 15504936
Animal study
“Notably, HCTZ treatment induced a shift in molecular weight of gamma-epithelial sodium channel from 85 to 70 kD, consistent with previously demonstrated aldosterone stimulation. The upregulation of AQP2 and distal renal Na(+) transporters in response to HCTZ treatment may account for the antidiuretic action of HCTZ in NDI.”
Names both Hydrochlorothiazide and Lithium in its title.
“The histopathological examination of all the investigated organs: kidney, liver, brain and spleen, revealed significant lesions which were time-dependant and more pronounced in the association group. Although the changes were mostly inflammatory and conqestive, it was proved that the concomitant administration of lithium and hydrochlorothiazid is potentially dangerous, increasing lithium's nephrotoxicity and the thiazide diuretic's hepatotoxicity.”
Names both Hydrochlorothiazide and Lithium in its title.
“The failure of effective antihypertensive treatment with an angiotension-converting enzyme inhibitor to modify the progression suggests that in this model, systemic or glomerular hypertension may not be an important pathophysiological factor. The structural and functional deterioration observed in Li-uraemic rats during treatment with hydrochlorothiazide remains unexplained.”
Names both Hydrochlorothiazide and Lithium in its title.
The American journal of psychiatry · 1982 · PMID 7091443
LetterHuman subjects
Names both Hydrochlorothiazide and Lithium in its title.
Limitations
What this evidence cannot tell you.
Search-based evidence indexes have real limits, and it is worth being explicit about them:
Selection. These records were found by searching PubMed titles and abstracts for both substance names alongside interaction and pharmacokinetic terms. Relevant work that phrases things differently, or is not indexed in PubMed, will be missing.
No effect size. The quoted conclusions are the authors’ words about their own study. We have not extracted effect direction or magnitude, and a single study’s conclusion is not a consensus.
Population mismatch. Findings in healthy volunteers, animals, or a specific patient group may not transfer to you, your dose, or your formulation.
Absence is not safety. Few published studies means the combination is under-studied, which is not the same as established as safe.
Nearby evidence
Other pairs with published research.
Pages covering Hydrochlorothiazide or Lithium alongside a different substance.
NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers Hydrochlorothiazide, Lithium, and several hundred other substances.
The checker is a research and organisation tool, not a clinical decision aid, and its per-pair assessments are excluded from search until they pass claim-level review.
NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.
