Metolazone

Hypertensive disease, Swollen feet or ankles, Chronic Kidney Disease (CKD) + 3 more

Treatment

2 FDA approvals

20 Active Studies for Metolazone

What is Metolazone

Metolazone

The Generic name of this drug

Treatment Summary

Metolazone is a long-acting diuretic used to treat chronic renal failure. It helps reduce blood pressure and causes the body to lose potassium. It belongs to a class of drugs called quinazoline-sulfonamides, which are similar to thiazide diuretics.

Metolazone

is the brand name

image of different drug pills on a surface

Metolazone Overview & Background

Brand Name

Generic Name

First FDA Approval

How many FDA approvals?

Metolazone

Metolazone

1973

81

Approved as Treatment by the FDA

Metolazone, also known as Metolazone, is approved by the FDA for 2 uses which include Hypertensive disease and Hypertensive disease .

Hypertensive disease

Used in combination with Hydrochlorothiazide / Losartan to help manage High Blood Pressure (Hypertension)

Hypertensive disease

Helps manage moderate Hypertension

Effectiveness

How Metolazone Affects Patients

Metolazone is a diuretic, which helps the body get rid of excess fluid. It works in a similar way to thiazide diuretics. Studies have shown that metolazone increases the amount of phosphate, magnesium, and sodium that is excreted from the body in people with poor kidney function. It has also been shown to work on animals in laboratory studies.

How Metolazone works in the body

Metolazone affects how the kidney reabsorbs electrolytes, specifically sodium and chloride. It prevents the absorption of these electrolytes, which causes increased excretion of them in urine. This also increases the amount of potassium that is excreted in urine. Metolazone does not affect carbonic anhydrase. The exact way that metolazone helps lower blood pressure is not known, but it is thought to be related to its effects on electrolyte excretion.

When to interrupt dosage

The measure of Metolazone is contingent upon the diagnosed affliction, including Mild Hypertension, Hypertensive disease and Hypertensive disease. The dosage amount is contingent upon the methodology of delivery featured in the table beneath.

Condition

Dosage

Administration

Hypertensive disease

5.0 mg, , 2.5 mg, 10.0 mg, 0.5 mg

, Tablet - Oral, Tablet, Oral

Swollen feet or ankles

5.0 mg, , 2.5 mg, 10.0 mg, 0.5 mg

, Tablet - Oral, Tablet, Oral

Chronic Kidney Disease (CKD)

5.0 mg, , 2.5 mg, 10.0 mg, 0.5 mg

, Tablet - Oral, Tablet, Oral

Hypertension

5.0 mg, , 2.5 mg, 10.0 mg, 0.5 mg

, Tablet - Oral, Tablet, Oral

Hypertensive disease

5.0 mg, , 2.5 mg, 10.0 mg, 0.5 mg

, Tablet - Oral, Tablet, Oral

Congestive Heart Failure

5.0 mg, , 2.5 mg, 10.0 mg, 0.5 mg

, Tablet - Oral, Tablet, Oral

Warnings

Metolazone has three contraindications, and it should be avoided for the conditions listed in the table below.

Metolazone Contraindications

Condition

Risk Level

Notes

Anuria

Do Not Combine

Hepatic Encephalopathy

Do Not Combine

Coma

Do Not Combine

There are 20 known major drug interactions with Metolazone.

Common Metolazone Drug Interactions

Drug Name

Risk Level

Description

Amifostine

Major

Metolazone may increase the hypotensive activities of Amifostine.

Cyclopentamine

Major

The risk or severity of adverse effects can be increased when Metolazone is combined with Cyclopentamine.

Dofetilide

Major

The risk or severity of QTc prolongation can be increased when Metolazone is combined with Dofetilide.

Hexamethonium

Major

The risk or severity of adverse effects can be increased when Metolazone is combined with Hexamethonium.

Lithium carbonate

Major

Metolazone may decrease the excretion rate of Lithium carbonate which could result in a higher serum level.

Metolazone Toxicity & Overdose Risk

Overdosing on this drug can cause difficulty breathing, dizziness, feeling faint upon standing, drowsiness, stomach and intestinal irritation, and extreme fatigue which can lead to a coma.

image of a doctor in a lab doing drug, clinical research

Metolazone Novel Uses: Which Conditions Have a Clinical Trial Featuring Metolazone?

Presently, 314 active studies are being conducted to examine the potential of Metolazone in treating Congestive Heart Failure, Hypertension and Swelling.

Condition

Clinical Trials

Trial Phases

Chronic Kidney Disease (CKD)

25 Actively Recruiting

Not Applicable, Phase 3, Phase 2, Phase 1, Phase 4

Swollen feet or ankles

4 Actively Recruiting

Phase 2, Not Applicable, Phase 4

Hypertensive disease

27 Actively Recruiting

Not Applicable, Phase 1, Phase 2, Phase 3

Hypertension

0 Actively Recruiting

Congestive Heart Failure

12 Actively Recruiting

Not Applicable, Phase 1, Phase 2

Hypertensive disease

0 Actively Recruiting

Metolazone Reviews: What are patients saying about Metolazone?

5

Patient Review

9/11/2012

Metolazone for Accumulation of Fluid Resulting from Chronic Heart Failure

This pill is very effective at removing fluid. I take it once a week as instructed, and I can really see (and feel) the difference.

5

Patient Review

1/17/2018

Metolazone for Accumulation of Fluid Resulting from Chronic Heart Failure

This diuretic has worked very well for me. I started seeing results within a few days, and my potassium levels dropped after about a week.

5

Patient Review

5/11/2012

Metolazone for High Blood Pressure

I am so thankful that this medication exists! Not only did it lower my blood pressure, but the edema in my ankles and feet completely disappeared.

5

Patient Review

7/11/2010

Metolazone for Accumulation of Fluid Resulting from Chronic Heart Failure

This drug was added to my regimen when I needed additional help.

5

Patient Review

12/8/2009

Metolazone for High Blood Pressure

This pill is for depression and it has a letter 'M' and the #645 on one side of the pill. The other side is blank. I'm not sure if this is the right pill for my daughter.

4.7

Patient Review

12/18/2009

Metolazone for Accumulation of Fluid Resulting from Chronic Heart Failure

This drug, in combination with lasix, has been working great for me. I have stage 4 kidney failure as well as COPD and congestive heart failure, so this two-drug combo is essential for keeping my lungs and heart functioning properly. When my blood work starts to show that my kidneys are failing, I take a break from the duo for a couple weeks.

4.3

Patient Review

1/9/2010

Metolazone for Accumulation of Fluid Resulting from Chronic Heart Failure

This treatment appears to be effective.

3.7

Patient Review

4/6/2013

Metolazone for Fluid in the Lungs due to Chronic Heart Failure

I've only been on a small dose of this medication, but it has already helped me. However, my heart rate is now irregular. I'm wondering if this is something I will get used to after awhile?

3.7

Patient Review

12/29/2009

Metolazone for Accumulation of Fluid Resulting from Chronic Heart Failure

I take this for congestive heart failure alongside lasix and aldactone. It's helped a little bit, but I'm on such a low dose (2.5mg) that it might just need to be increased. Within two days, it noticeably reduces bloating.

1.7

Patient Review

11/27/2020

Metolazone for Accumulation of Fluid Resulting from Chronic Heart Failure

Metolazone is really not a good choice, especially if you're looking at long-term use. I have to take it for fluid buildup and every time my potassium levels drop critically low, which has led to acute kidney failure in the past. However, I don't have any other choice because the Torsemide that I take daily has all but stopped working. If you can avoid this drug, it would be best for you.
image of drug pills surrounding a glass of water symbolizing drug consumption

Patient Q&A Section about metolazone

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

What are the side effects for metolazone?

"The following are symptoms of dehydration: dizziness, weakness, restlessness, headache, muscle cramps, joint pain or swelling, constipation, diarrhea."

Answered by AI

Is metolazone a potassium sparing diuretic?

"Metolazone prevents the reabsorption of sodium, potassium, and water in the tubules, causing an increase in their excretion."

Answered by AI

Is metolazone the same as Lasix?

"Lasix (furosemide) and Zaroxolyn (metolazone) are diuretics that are used to treat excess accumulation of fluid or swelling of the body (edema). They are also used to treat high blood pressure (hypertension)."

Answered by AI

Is metolazone a strong diuretic?

"Even at low doses, metolazone significantly increases the diuretic effects of furosemide, making it simpler to treat fluid retention. In many cases, high doses of furosemide can be avoided, which is an advantage for patients who need long-term treatment and have decreased kidney function."

Answered by AI

Clinical Trials for Metolazone

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Food is Medicine for High Blood Pressure and Obesity

Any Age
All Sexes
Chicago, IL

The goal of this clinical trial is to treat both hypertension and obesity in adults using a food is medicine framework. Participants will be randomized 1:1 to FIM+DASH or usual-care control. The 24-week trial includes a 12-week FIM+DASH intervention followed by a 12-week maintenance period and leverages existing partnerships with community-based organizations for home food delivery and culinary skill-skill building. The main questions it aims to answer are: (1) What is the effect of FIM+DASH vs. usual care control on blood pressure? (2) What is the effect of FIM+DASH vs. usual care control on DASH diet adherence (diet quality), body weight, and waist circumference? (3) How to identify factors associated with the sustainability and scalability of FIM+DASH in real-world settings?

Phase 2
Waitlist Available

Miles Square Health Center Chicago (+3 Sites)

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Remote Monitoring for Cardiovascular Disease

18+
All Sexes
Halifax, Canada

The goal of this interventional study is to evaluate the implementation, usability, and clinical outcomes of a wearable medical-grade device in a virtual Cardiac Rehabilitation (CR) program, titled HEARTS in Sync. The question guiding this study is: Do patient clinical outcomes differ between those who use the CardioWatch 287-2 during the HEARTS in Sync program as compared to those who participate without using the CardioWatch 287-2? The comparison will happen between two non-randomized groups of patients who are enrolled in the HEARTS in Sync virtual CR program. The wearable device (CardioWatch 287-2), worn on patient's wrists, will provide clinicians with physiological information to better mirror the clinical oversight provided to an in-person CR program. Participants who choose to use the device will be asked to wear it daily. The clinical team will review weekly summary reports to help guide participant progress through the 13-week program. The primary objectives of this study are to: 1. Characterize participants (e.g., demographic health history, patient feedback) between those who choose to use the CardioWatch 287-2 device and those who do not. 2. Compare clinical outcomes between users and non-users of the device within the HEARTS in Sync program, by: 1. Tracking patient enrollment, attendance in virtual education sessions, and program completion rates, 2. Evaluating change in patient bloodwork outcomes, 3. Measuring change is physical ability, 4. Analyzing changes in eating behaviours, and 5. Examining quality of life using validated tools. 3. Asses the feasibility of the CardioWatch 287-2 for the HEARTS in Sync virtual CR program by: 1. Assessing device adherence 2. Reviewing patient feedback survey, and 3. Determining if clinician team were able to access and interpret data collected throughout the program The secondary objective of this study is to compare clinical outcomes of device users during the HEARTS in Sync program with patients who completed the on-site CR program. This research aims to better understand how a medical-grade device may improve virtual CR programming to extend clinical care to the community. As a result, this could lead to a more personalized care and better results for patients.

Waitlist Available
Has No Placebo

Mumford Professional Centre

Nicholas B Giacomantonio, Medical Doctor

Corsano Health B.V.

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Cuffless PPG Monitor for High Blood Pressure

18+
All Sexes
Miami, FL

This study aims to validate the accuracy and reliability of blood pressure (BP) estimates obtained over 24 hours using a PPG-based chest-patch device compared to the gold standard ambulatory blood pressure monitoring (ABPM) method using an upper arm cuff-based oscillometric BP device, in both hypertensive and normotensive individuals referred by their provider to undergo a 24-hours ABPM for clinical indication. The Awake/Asleep test, which is the primary test recommended for automated wearable cuffless BP devices that are cuff-calibrated (based on the 2023 European Society of Hypertension (ESH) recommendations for the validation of cuffless blood pressure measuring devices), will be conducted in this study. The secondary aim of the study is to assess the feasibility and convenience of the PPG-based device.

Waitlist Available
Has No Placebo

U Health (+1 Sites)

Ziad Zoghby, M.D., M.B.A.

Biobeat Technologies Ltd.

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Dietary Interventions for Hypertension

18+
All Sexes
Birmingham, AL

Natriuretic peptides (NPs) are hormones produced by the heart and play an important role in maintaining cardiovascular health and have favorable metabolic benefits. Low NP levels are associated with an increased likelihood of the development of cardiometabolic diseases like diabetes and hypertension. NP levels are known to be highly heritable, with up to half of the differences in NP levels being explained by genetics. The investigators aim to describe the genetic architecture of NPs by examining the genetic variants associated with NPs, and generate and validate a polygenic score (PGS) for NPs. The investigators will use this NP PGS to examine the association of genetically determined NP levels with cardiometabolic and cardiovascular outcomes. The investigators will conduct a genotype-guided physiological clinical trial that aims to assess the genetic factors affecting NP levels and their impact on blood pressure and NP response to saline infusion, high-salt diet, and low-salt diet. These findings will help support personal medicine approaches to lower the increasing burden of hypertension in the United States.

Waitlist Available
Has No Placebo

University of Alabama at Birmingham

Pankaj Arora, MD, FAHA

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Endovascular Treatment for Stroke

18+
All Sexes
Richmond, VA

Endovascular therapy (EVT) has proven to be more beneficial for patients with AIS caused by large vessel occlusions (LVO) than medical management alone. A recent meta-analysis of 5 RCTs showed that EVT significantly reduced disability at 90 days compared to medical management \[1\]. Despite its obvious benefits, patients may have neurological deterioration despite successful thrombectomy due to ischemia progression, intracranial hemorrhage, re-occlusion, or vasogenic edema. The incidence of early neurological deterioration (END) following EVT for acute stroke has been reported to be ranging from 14.1-35.2% with some studies defining END up to 7 days and some restricting the definition between 6-72 hours post thrombectomy. A small proportion of these patients, approximately 5.9-10.5%, experienced sICH following EVT. Whether END occurs due to ischemic or hemorrhagic it leads to worse outcomes.

Waitlist Available
Has No Placebo

Virginia Commonwealth University

Aarti Sarwal

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Extended vs Immediate Release Torsemide for Heart Failure

18+
All Sexes
Miami, FL

The primary objective of this study is to learn whether a morning dose of extended-release torsemide enhances renal sodium excretion after lunch (4-8 hours after dosing) compared to immediate-release torsemide. This is a randomized, double-blind, crossover study in patients with heart failure who are on a stable dose of a loop diuretic. During the study period, participants' current loop diuretics will be replaced with an equivalent dose of either immediate-release or extended-release torsemide. Following a one-week stabilization period on the assigned torsemide formulation, patients will report to the clinical site for an assessment visit. On the study day, patients will take a single dose of the same torsemide formulation they have been on for the past week, administered after breakfast. Urine samples be collected are: * 0-4 hours post-dosing (pre-lunch period) * 4-8 hours post-dosing (post-lunch period) * 8-24 hours post-dosing (24 hours period) The primary endpoint will be urinary sodium excretion (4-8 hours after dosing). This will be compared between the extended-release arm and the immediate-release arm to assess the efficacy of prolonged diuretic action. In addition, urinary potassium and creatinine excretion and creatinine clearance will be measured in all urine samples as the safety endpoints.

Phase 4
Recruiting

Future Life Clinical Trials

Salim Shah, PhD, JD

Sarfez Pharmaceuticals, Inc.

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