Losartan/Hydrochlorothiazide and Potassium: what the published research says
PubMed indexes 8 records that name Losartan/Hydrochlorothiazide and Potassium 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 Losartan/Hydrochlorothiazide and Potassium. 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 Losartan/Hydrochlorothiazide and Potassium.
Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.
“In conclusion, these novel results have demonstrated that CHIP diuretics reduce LVM 2-fold more than HCTZ among hypertensive patients. Although generally related to LVM, blood pressure fails to explain the superiority of CHIP diuretics for reducing LVM.”
Names both Losartan/Hydrochlorothiazide and Potassium in its title.
“In patients with HF with reduced ejection fraction intolerant to angiotensin-converting enzyme inhibitors and treated with either high- or low-dose losartan, incident hypokalemia had a stronger association with poor outcomes than incident hyperkalemia. High-dose losartan reduced the incidence of hypokalemia, and its benefits were maintained across the full spectrum of serum potassium.”
Names both Losartan/Hydrochlorothiazide and Potassium in its title.
“1 tablet and the Hyzaar® tablet in HCTZ, losartan carboxylic acid (E-3174), and LOS-K (F < F0.05). Thus, formulation and preparation factors were determined according to the combination of the compression and mechanical properties of the mixed powder and quality of tablets, which was demonstrated to be a feasible method in direct powder compression.”
Names both Losartan/Hydrochlorothiazide and Potassium in its title.
“Pending long term data as outlined above, it is likely to find initial use in patients with mild to severe hypertension who are unresponsive to, or intolerant of their current therapy. However, with its novel mechanism of action, good efficacy and favourable tolerability profile, losartan potassium is well placed to claim a prominent position in the management of patients with essential hypertension in the future.”
Names both Losartan/Hydrochlorothiazide and Potassium in its title.
Journal of hypertension. Supplement : official journal of the International Society of Hypertension · 1995 · PMID 18800452
ReviewHuman subjects
“These results suggest that losartan is an effective angiotensin II receptor antagonist in normal subjects. Its safety and clinical efficacy in hypertensive patients will be addressed in large clinical trials.”
Names both Losartan/Hydrochlorothiazide and Potassium in its title.
Therapeutic drug monitoring · 2024 · PMID 38176856
Systematic ReviewHuman subjects
“The current review summarizes all available PK parameters of torasemide that may be beneficial for avoiding drug-drug interactions in subjects with renal and hepatic dysfunction and for predicting doses in patients with different diseases.”
Names Losartan/Hydrochlorothiazide and Potassium together in an interaction, co-administration, or pharmacokinetic context.
Journal of the American College of Cardiology · 2026 · PMID 41670573
Randomized Controlled TrialMulticenter StudyClinical Trial, Phase IIIComparative Study
“Single-pill LDC-ALC achieved BP reductions similar to those with amlodipine and greater than those with losartan monotherapy over 8 weeks, with similar short-term tolerability. These findings support LDC-ALC as an effective and well tolerated alternative initial therapy for mild-to-moderate hypertension, expanding the set of validated strategies alongside established monotherapies.”
Names Losartan/Hydrochlorothiazide and Potassium together in an interaction, co-administration, or pharmacokinetic context.
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 Losartan/Hydrochlorothiazide or Potassium 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 Losartan/Hydrochlorothiazide, Potassium, 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.
