Cardura

Kidney Calculi, Enlarged Prostate, Hypertensive disease

Treatment

1 FDA approval

20 Active Studies for Cardura

What is Cardura

Doxazosin

The Generic name of this drug

Treatment Summary

Doxazosin is a prescription drug used to treat high blood pressure and symptoms of an enlarged prostate. It belongs to a class of medications called alpha-1 antagonists and works by relaxing the muscles in the bladder and prostate. Doxazosin was approved by the FDA in 1990 and is made by Pfizer. It can be taken once daily and has long-lasting effects.

Cardura

is the brand name

image of different drug pills on a surface

Cardura Overview & Background

Brand Name

Generic Name

First FDA Approval

How many FDA approvals?

Cardura

Doxazosin

1991

281

Approved as Treatment by the FDA

Doxazosin, commonly known as Cardura, is approved by the FDA for 1 uses which include Hypertensive disease .

Hypertensive disease

Effectiveness

How Cardura Affects Patients

Doxazosin is used to lower blood pressure and treat symptoms of an enlarged prostate. Taking this drug can cause dizziness or lightheadedness, especially when you first start taking it or if there are long breaks between doses. It is important to slowly increase the dose, beginning with the lowest (1 mg). Doxazosin can also have positive effects on cholesterol levels, reducing LDL and triglycerides and increasing HDL. Rarely, doxazosin may cause priapism, a painful condition of long-lasting erections that can eventually lead to impotence. If you suspect you have priapism,

How Cardura works in the body

Doxazosin works by blocking receptors in blood vessels, reducing the amount of pressure in your blood. It also relaxes the muscles around your prostate and bladder neck, helping to reduce symptoms of Benign Prostatic Hyperplasia (BPH). Although it can help with BPH, there is a risk of heart failure associated with doxazosin use.

When to interrupt dosage

The recommended measure of Cardura is contingent upon the documented condition, for instance Enlarged Prostate, Ureteric calculus and Hypertensive disease. The amount likewise deviates based on the method of administration, as shown in the table below.

Condition

Dosage

Administration

Enlarged Prostate

, 4.0 mg, 8.0 mg, 1.0 mg, 2.0 mg, 5.1 mg, 10.2 mg

, Oral, Tablet, multilayer, extended release, Tablet, multilayer, extended release - Oral, Tablet, Tablet - Oral, Kit; Tablet, Kit; Tablet - Oral

Kidney Calculi

, 4.0 mg, 8.0 mg, 1.0 mg, 2.0 mg, 5.1 mg, 10.2 mg

, Oral, Tablet, multilayer, extended release, Tablet, multilayer, extended release - Oral, Tablet, Tablet - Oral, Kit; Tablet, Kit; Tablet - Oral

Hypertensive disease

, 4.0 mg, 8.0 mg, 1.0 mg, 2.0 mg, 5.1 mg, 10.2 mg

, Oral, Tablet, multilayer, extended release, Tablet, multilayer, extended release - Oral, Tablet, Tablet - Oral, Kit; Tablet, Kit; Tablet - Oral

Warnings

Cardura Contraindications

Condition

Risk Level

Notes

Quinazolines

Do Not Combine

There are 20 known major drug interactions with Cardura.

Common Cardura Drug Interactions

Drug Name

Risk Level

Description

Acepromazine

Major

Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Acepromazine.

Alfuzosin

Major

Doxazosin may increase the hypotensive activities of Alfuzosin.

Amifostine

Major

Doxazosin may increase the hypotensive activities of Amifostine.

Aripiprazole

Major

Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Aripiprazole.

Aripiprazole lauroxil

Major

Doxazosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Aripiprazole lauroxil.

Cardura Toxicity & Overdose Risk

The lowest toxic dose of doxazosin for mice is greater than 1000mg/kg. Signs of overdosing on doxazosin include low blood pressure, changes in heartbeat, and sleepiness. Treatment for overdoses includes supportive care, removing unabsorbed doxazosin from the stomach, correcting low blood pressure, and closely monitoring vital signs.

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

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

39 active trials are being conducted to evaluate the potential of Cardura to provide relief from Enlarged Prostate, Ureteric calculus and Hypertension.

Condition

Clinical Trials

Trial Phases

Hypertensive disease

27 Actively Recruiting

Not Applicable, Phase 1, Phase 2, Phase 3

Kidney Calculi

0 Actively Recruiting

Enlarged Prostate

16 Actively Recruiting

Not Applicable, Phase 2

Cardura Reviews: What are patients saying about Cardura?

5

Patient Review

2/26/2017

Cardura for High Blood Pressure

At long last, I've found a medication that helps with my high blood pressure!

5

Patient Review

3/19/2014

Cardura for High Blood Pressure

This drug, in combination with Avodart and Bethanechol, has been highly effective for my prostate.

5

Patient Review

1/11/2014

Cardura for Enlarged Prostate

This medication unfortunately had a lot of negative side effects for me, including an increase in blood pressure and shortness of breath. I wouldn't recommend it to others.

4.7

Patient Review

6/20/2012

Cardura for High Blood Pressure

I'm taking this for migraines, and it's been two days without any issues. Even with some specific triggers, I haven't gotten a migraine. So far no side effects & I don't have to worry about a prostate.

4.3

Patient Review

6/6/2011

Cardura for High Blood Pressure

4

Patient Review

10/12/2013

Cardura for Enlarged Prostate

I had to stop taking this medication after only six weeks because the side effects were becoming too much to bear. I was constantly tired, my mouth was dry, and I felt unbalanced. The swelling got so bad that it was difficult to talk. If you're considering this as a last resort, be aware of the possible consequences.

3.7

Patient Review

9/25/2014

Cardura for High Blood Pressure

I developed severe swelling in my ankles while taking this medication but I'm not sure if the two are related.

3

Patient Review

6/24/2011

Cardura for High Blood Pressure

I've been taking 4mg of Cardura for over 10 years. I tried stopping, but my blood pressure went up. Once I started taking it again, everything returned to normal. In addition to controlling my BP, this medication has also helped me limit the number of times I need to urinate in the evening.

3

Patient Review

6/7/2011

Cardura for High Blood Pressure

2.3

Patient Review

8/9/2019

Cardura for Enlarged Prostate

I was prescribed Cardura years ago for BPH, but at the time I didn't have a lot of knowledge about the condition. Every time I would bend down, I would get dizzy and my blood pressure would drop extremely low. My doctor ignored my concerns at the time.

2.3

Patient Review

8/11/2014

Cardura for High Blood Pressure

Unfortunately, this little white pill also gave me terrible side effects like stomach pain and gas, chest cramps, and wheezing lungs.

2

Patient Review

1/11/2012

Cardura for High Blood Pressure

My blood pressure has been more stable since taking this medication, but now I have to deal with swollen ankles.

1.7

Patient Review

3/6/2013

Cardura for High Blood Pressure

I initially started having hot flushes about four times a day, but now they've increased to every two hours. Additionally, my vision has become blurry.

1

Patient Review

11/28/2013

Cardura for High Blood Pressure

I was treated for prostate cancer in 1996. After treatment I experienced urination frequency and voiding problems. I have been on 4 to 8 milligrams of Cardura per day ever since. I have not noticed any severe side effects, but am more tired than I think I should be.
image of drug pills surrounding a glass of water symbolizing drug consumption

Patient Q&A Section about cardura

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

Is Cardura a beta blocker?

"Cardura is an alpha-1 adrenergic blocker that is prescribed for treating high blood pressure and symptoms associated with benign prostatic hyperplasia."

Answered by AI

What is the drug Cardura used for?

"Doxazosin is used to lower blood pressure. It may be used alone or with other blood pressure lowering medications. This medication works by relaxing blood vessels so blood flows more easily."

Answered by AI

What are the side effects of taking doxazosin?

"If you are feeling weak, sleepy, or dizzy, you may have a headache. Your feet, ankles, or fingers may be swollen. You may have a urinary tract infection (UTI) or cystitis. You may have stomach pain or back pain. You may feel sick (nausea), have indigestion, or heartburn."

Answered by AI

Does Cardura lower blood pressure?

"Cardura leads to lower blood pressure and may trigger dizziness or fainting, most notably when you first start taking it, or when you start taking it again after a break. You may feel very dizzy when you first wake up in the morning. Be cautious when standing or sitting up from a lying position."

Answered by AI

Clinical Trials for Cardura

Image of Southern Alberta Institute of Urology in Calgary, Canada.

Prehabilitation Program for Enlarged Prostate

18+
Male
Calgary, Canada

Benign prostatic hyperplasia (BPH) is a debilitating condition which is highly prevalent in older males, up to 45% of those over the age of 45 are affected and 80% of those over the age of 70 are affected. While not all men with BPH experience problematic symptoms, many will experience lower urinary tract symptoms (LUTS) including difficulty passing urine, recurrent urinary tract infections, bladder stones, and hematuria. Holmium Laser Enucleation of the Prostate (HoLEP) is the gold standard in terms of surgical BPH management and is associated with a low risk for requiring repeat interventions. However, in the weeks following HoLEP procedures many men will experience transient urinary incontinence which can be distressing to patients. In the setting of prostate cancer, exercise and mental health supports prior to surgery has been shown to improve incontinence and post-surgical recovery. This is often termed prehabilitation and consists of programming done in the months before surgery. The objective of this study is to assess the safety and feasibility of prehabilitation programming prior to HoLEP procedures for men with BPH. The investigators will be randomizing 40 patients into 2 groups, one receiving standard of care interventions prior to their HoLEP surgery and one receiving at least 12 weeks of comprehensive prehabilitation programming including: pelvic floor physiotherapy, access to additional informational resources, and access to mental health supports including individual and couples counselling. In both groups the investigators will be collecting key demographics and clinical information from patients as well as assessing their urinary function through several questionnaires before prehabilitation, immediately before surgery, and up to 1 year after surgery. The investigators hope to establish that prehabilitation is a safe and feasible option for these patients. Secondarily investigators hope to provide evidence that prehabilitation improves incontinence faster following HoLEP procedures and improves post-surgical recovery.

Waitlist Available
Has No Placebo

Southern Alberta Institute of Urology

Image of Hāmākua-Kohala Health Center in Honokaa, United States.

Produce Prescription for High Blood Pressure

18+
All Sexes
Honokaa, HI

This multi-site randomized controlled trial uses a community-based approach to evaluate a Food as Medicine program for Native Hawaiian and Pacific Islander (NHPI) adults in Hawaii who have high blood pressure and difficulty affording healthy food. The study has two main goals: (1) to implement a produce prescription program and see if adding personal support from Community Health Workers (CHW) improves blood pressure among other health outcomes, and (2) to determine the program's cost-effectiveness. The study will take place across three Federally Qualified Health Centers in Hawaii. Produce prescription program participants at each site will receive $100 per month, either in the form of produce boxes or monthly vouchers to purchase fruits and vegetables, for 12 months (totaling $1200). In past studies, personal challenges (e.g., lack of transportation, lack of cooking skills) have made it difficult for participants to use the vouchers and/or the purchased produce. In other food as medicine interventions, participants have similarly faced various personal, social, and environmental barriers that limit the program's efficacy. To help participants navigate through these challenges, the investigators want to test adding 1-on-1 support from a CHW throughout the program. Other studies have found that health interventions delivered by CHWs have been effective in reducing blood pressure, blood glucose and weight, especially among vulnerable populations, such as NHPIs and those with food insecurity. The CHWs in this study will receive a training using a curriculum tailored specifically to their community and that is in alignment with the Pilinahā: The Four Connections Framework, which focuses on key connections that Indigenous people seek to attain health and can be employed to overcome health disparities. To test the effectiveness of the added CHW support, there will be two groups of participants: Group 1 (Intervention) will receive the monthly produce prescription ($100 vouchers or produce box) plus meet with a CHW every two months for support with program challenges. Group 2 (Control) will receive the same monthly produce prescription, but will not have meetings with a CHW. The investigators want to see if the added support from CHWs leads to better blood pressure results, among other health outcomes. Upon providing informed consent and enrolling into the program, produce prescription program participants will: * Attend 5 study visits over the one year program. These happen at the start, and then at 3, 6, 9, and 12 months. * Complete health checks at the first visit. This includes getting a home blood pressure monitor and learning about heart health and nutrition. Staff will measure height, weight, waist size, and blood pressure. * Answer surveys about their demographic background, health habits, diet, and culture. * Receive $100 in vouchers every month for 12 months to redeem for fruits and vegetables at a local retailer. * Group 1 will additionally meet with a CHW every two months for 1-on-1 support with any challenges related to the program. * Group 2 will receive monthly reminders to use their vouchers but no CHW meetings. After the program ends, researchers will analyze the financial value of the intervention. This involves calculating the total cost to run the program (including vouchers, CHW training and salaries, and administrative costs) and comparing it to potential savings in healthcare costs. By looking at improvements in blood pressure, researchers can estimate how many heart-related health problems were prevented and how much money was saved on medical care.

Waitlist Available
Has No Placebo

Hāmākua-Kohala Health Center (+2 Sites)

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Image of University of California, San Diego in San Diego, United States.

BPCARE Intervention for High Blood Pressure

18+
All Sexes
San Diego, CA

The goal of this randomized clinical trial is to determine whether a community health worker-delivered, multi-component behavioral intervention can improve antihypertensive medication adherence and blood pressure control among adult refugees with hypertension who are prescribed antihypertensive medications. The main questions it aims to answer are: 1. Does participation in the BPCARE intervention improve antihypertensive medication adherence compared to enhanced usual care? 2. Does participation in the BPCARE intervention improve blood pressure control and persistence over time compared to enhanced usual care? Researchers will compare participants randomized to the BPCARE intervention to those receiving enhanced usual care (hypertension information and a home blood pressure monitor) to determine the effects on medication adherence, blood pressure control, and persistence. Participants will: * Be randomly assigned to either the BPCARE intervention or enhanced usual care * Receive hypertension education and a home blood pressure monitor * Participate in community health worker-delivered sessions that include hypertension and medication education, motivational interviewing, problem-solving, and action planning (intervention arm only) * Complete questionnaires assessing medication adherence and related psychosocial factors * Have blood pressure monitored using connected home blood pressure devices * Complete pill counts to assess medication adherence over a nine-month follow-up period

Recruiting
Has No Placebo

University of California, San Diego (+1 Sites)

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PILI Pasifika Program for Cardiometabolic Conditions

18+
All Sexes
Fayetteville, AR

In this study, the investigators are conducting a Type 3 hybrid effectiveness-implementation trial to evaluate the implementation of the Community Health Workers (CHW)-delivered PILI Pasifika Program (PPP) across 3 regions, the U.S. Affiliated Pacific Islands (USAPI), the continental U.S., and Hawai'i, among 400 Native Hawaiian and Pacific Islander (NHPI) participants in two settings, (clinical and non-clinical) over a 3-year period. The PPP is a 3-month lifestyle intervention that includes a Social Determinants of Health (SDOH) component and was NHPI-adapted from the Diabetes Prevention Program's Lifestyle Program, renamed to the PILI Lifestyle Program (PLP), which demonstrated effectiveness in improving weight, blood pressure, physical activity, and diet among NHPIs. The PPP consists of 8 lifestyle lessons and 4 SDOH activities delivered over a 3-month period. The aims of this study are threefold: 1. To evaluate the implementation of the PPP across multiple community sites using a Type 3 hybrid effectiveness-implementation design guided by established frameworks such as RE-AIM and PRISM. 2. To examine participant-level outcomes associated with PPP implementation, including changes in cardiometabolic risk factors, health behaviors, and SDOH factors from baseline to 3 and 9-month follow-up. 3. To evaluate the cost and cost-effectiveness of implementing the PPP across community settings.

Waitlist Available
Has No Placebo

National Association of Pasifika Organizations (+1 Sites)

Joseph K Kaholokula, PhD

Image of Rush University Medical Center in Chicago, United States.

Food is Medicine for High Blood Pressure

18+
All Sexes
Chicago, IL

The goal of this clinical trial is to assess nutrition incentives and produce vouchers to measure the impacts of food insecurity-related chronic health conditions in adults with hypertension and/or diabetes. The main questions it aims to answer are: * Does participation increase fruit and vegetable consumption for participants? * Does participation reduce individual and household food insecurity? * Does participation reduce healthcare utilization and associated costs? * Does participation lead to improvements in diet-related health outcomes (e.g., hypertension, diabetes)? * Does participation support the local economy by increasing participant spending at local food vendors? Participants will: * Receive 6 months home delivered produce prescription boxes * Receive 6 months match of produce vouchers * Receive nutrition education and participate in Chronic Disease Self-Management classes

Waitlist Available
Has No Placebo

Rush University Medical Center

Traci Simmons, DrPHc, MPH

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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.

Recruiting
Has No Placebo

U Health (+5 Sites)

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

Biobeat Technologies Ltd.

Image of University of Alabama at Birmingham in Birmingham, United States.

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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