DrugLib.com — Drug Information Portal

Rx drug information, pharmaceutical research, clinical trials, news, and more

Captopril and Hydrochlorothiazide (Captopril / Hydrochlorothiazide) - Summary

 
 



USE IN PREGNANCY

When used in pregnancy during the second and third trimesters, ACE Inhibitors can cause injury and even death to the developing fetus. When pregnancy is detected, Captopril and Hydrochlorothiazide should be discontinued as soon as possible. See WARNINGS: Captopril: Fetal/Neonatal Morbidity and Mortality.

 

SUMMARY

Captopril and hydrochlorothiazide tablets, USP for oral administration combines two antihypertensive agents: captopril and hydrochlorothiazide. Catopril, the first of a new class of antihypertensive agents, is a specific competitive inhibitor of angiotensin I-converting enzyme (ACE), the enzyme responsible for the conversion of angiotensin I to angiotensin II. Hydrochlorothiazide is a benzothiadiazide (thiazide) diuretic-antihypertensive. Captopril, USP is a white to off-white crystalline powder that may have a slight sulfurous odor; it is soluble in water (approx. 160 mg/mL), methanol, and ethanol and sparingly soluble in chloroform and ethyl acetate. Hydrochlorothiazide, USP is a white crystalline powder slightly soluble in water but freely soluble in sodium hydroxide solution.

Captopril and Hydrochlorothiazide tablets are indicated for the treatment of hypertension. The blood pressure lowering effects of captopril and thiazides are approximately additive.

This fixed combination drug may be used as initial therapy or substituted for previously titrated doses of the individual components.

When captopril and hydrochlorothiazide are given together it may not be necessary to administer captopril in divided doses to attain blood pressure control at trough (before the next dose). Also, with such a combination, a daily dose of 15 mg of hydrochlorothiazide may be adequate.

Treatment may, therefore, be initiated with Captopril and Hydrochlorothiazide tablets 25 mg/15 mg once daily. Subsequent titration should be with additional doses of the components (captopril, hydrochlorothiazide) as single agents or as Captopril and Hydrochlorothiazide tablets 50 mg/15 mg, 25 mg/25 mg, or 50 mg/25 mg (see DOSAGE AND ADMINISTRATION).

In using Captopril and Hydrochlorothiazide, consideration should be given to the risk of neutropenia/agranulocytosis (see WARNINGS).

Captopril and Hydrochlorothiazide may be used for patients with normal renal function, in whom the risk is relatively low. In patients with impaired renal function, particularly those with collagen vascular disease, Captopril and Hydrochlorothiazide should be reserved for hypertensives who have either developed unacceptable side effects on other drugs, or have failed to respond satisfactorily to other drug combinations.

ACE inhibitors (for which adequate data are available) cause a higher rate of angioedema in black than in non-black patients (see WARNINGS: Captopril: Head and Neck Angioedema and Intestinal Angioedema).


See all Captopril and Hydrochlorothiazide indications & dosage >>

NEWS HIGHLIGHTS

Media Articles Related to Captopril and Hydrochlorothiazide (Captopril / Hydrochlorothiazide)

High Blood Pressure (Hypertension) Quiz: Symptoms, Signs & Causes
Source: MedicineNet Facial Nerve Problems Specialty [2017.09.19]
Title: High Blood Pressure (Hypertension) Quiz: Symptoms, Signs & Causes
Category: MedicineNet Quiz
Created: 2/9/2011 12:00:00 AM
Last Editorial Review: 9/19/2017 6:02:11 PM

Pulmonary Hypertension (Symptoms, Treatment Medications, Life Expectancy)
Source: MedicineNet Congenital Heart Disease Specialty [2017.07.26]
Title: Pulmonary Hypertension (Symptoms, Treatment Medications, Life Expectancy)
Category: Diseases and Conditions
Created: 12/31/1997 12:00:00 AM
Last Editorial Review: 7/26/2017 12:00:00 AM

High Blood Pressure (Hypertension)
Source: MedicineNet Polycystic Ovary Specialty [2017.03.31]
Title: High Blood Pressure (Hypertension)
Category: Symptoms and Signs
Created: 1/15/2014 12:00:00 AM
Last Editorial Review: 3/31/2017 12:00:00 AM

Portal Hypertension
Source: MedicineNet nitroglycerin Specialty [2016.09.06]
Title: Portal Hypertension
Category: Diseases and Conditions
Created: 1/31/2005 12:00:00 AM
Last Editorial Review: 9/6/2016 12:00:00 AM

Picture of Hypertension
Source: MedicineNet betaxolol ophthalmic Specialty [2014.12.09]
Title: Picture of Hypertension
Category: Images
Created: 2/3/2011 12:00:00 AM
Last Editorial Review: 12/9/2014 12:00:00 AM

more news >>

Published Studies Related to Captopril and Hydrochlorothiazide (Captopril / Hydrochlorothiazide)

[Impact of patient compliance on the outcomes in hypertensive patients receiving hydrochlorothiazide based combination therapy with spironolactone or captopril.] [2008.12]
OBJECTIVE: To explore the impact of patient compliance on the long-term outcomes in hypertensive patients receiving hydrochlorothiazide (HCTZ) based combination therapy with spironolactone or captopril... CONCLUSIONS: This study indicates that patient compliance could affect the long-term outcome and antihypertensive efficacy in hypertensive patients receiving HCTZ based combination therapy with spironolactone or captopril.

Polymorphisms of ACE2 gene are associated with essential hypertension and antihypertensive effects of Captopril in women. [2007.08]
ACE2 appears to counterbalance the vasopressor effect of angiotensin I converting enzyme (ACE) in the reninangiotensin system...

Polymorphisms of ACE2 Gene are Associated With Essential Hypertension and Antihypertensive Effects of Captopril in Women. [2007.05.02]
ACE2 appears to counterbalance the vasopressor effect of angiotensin I converting enzyme (ACE) in the renin-angiotensin system... The adjusted diastolic blood pressure response to Captopril was 3.3 mm Hg lower in ACE2 T allele carriers than in CC genotype carriers (P=0.019) in women.

Simultaneous determination of captopril and hydrochlorothiazide in human plasma by reverse-phase HPLC from linear gradient elution. [2006.05.03]
A simple, rapid and sensitive high-performance liquid chromatographic method for the simultaneous determination of captopril and hydrochlorothiazide in human plasma samples was developed. Captopril was derivatized with 2,4'-dibromoacetophenone (pBPB) to form a captopril-pBPB adduct... The method was suitably validated and successfully applied to the determination of captopril and hydrochlorothiazide in human plasma samples.

more studies >>

Clinical Trials Related to Captopril and Hydrochlorothiazide (Captopril / Hydrochlorothiazide)

Clonidine Versus Captopril for Treatment of Postpartum Very High Blood Pressure [Completed]
The postpartum period represents a stage of the pregnancy-puerperal still rarely addressed scientifically. There are no reports in the literature and concrete enough to elucidate important issues, especially in the field of hypertension and pregnancy. Searches based on current evidence concentrate their focus on the diagnosis of hypertensive disorders and treatment of these diseases maternofetais repercussions. However, the prognosis in the short and long term, as the BP outcome in mothers with severe preeclampsia, the most effective treatment for the control of hypertensive crisis and metabolic and cardiovascular events after two years of termination of pregnancy require further clarification. The main idea for developing this research came from the clinical experience with the use of captopril in Obstetric ICU IMIP. This drug has long been used in postpartum women with severe preeclampsia or chronic hypertension exacerbated by pregnancy for control of hypertensive crisis and keeping pressure levels. Following the technical standards of the institution and during his administration, there were reports of side effects such as dry cough and nausea, beyond the threshold dose of 150mg daily captopril was easily achieved hindering control the use of hypotensive. Alternative therapy, clonidine began to be used in mothers with some restriction on the use of ACE inhibitors and its hypotensive effect for peak pressure was satisfactory. What is not known yet is how long clonidine reduces high blood pressure and how long to leave stabilized compared to the use of captopril. There are no reports in the literature databases, no randomized clinical trials that prove the effectiveness of clonidine for the treatment of hypotensive pressure peaks in this particular group of patients, even in comparison with other classes of antihypertensive drugs, especially captopril, to this purpose. The investigators' primary assumption is that clonidine has better effectiveness in decreasing the frequency of pressure peaks when compared with captopril.

Assessment of the Effect of Captopril Versus Combination of Captopril and Pentoxifylline on Reducing Proteinuria in Type 2 Diabetic Nephropathy [Completed]

Captopril in Treating Patients With Non-Small Cell Lung Cancer or Limited-Stage Small Cell Lung Cancer That Has Been Previously Treated With Radiation Therapy With or Without Chemotherapy [Active, not recruiting]
RATIONALE: Captopril is a drug that may be able to decrease side effects caused by radiation therapy, and may improve the quality of life of patients with non-small cell lung cancer or limited-stage small cell lung cancer. PURPOSE: This randomized phase II trial is studying how well captopril works in decreasing side effects and improving the quality of life in patients who have received radiation therapy with or without chemotherapy for stage I, stage II, or stage IIIB non-small cell lung cancer or limited-stage small cell lung cancer.

Rapid Versus Prolonged Inpatient Up-Titration of Captopril [Recruiting]

more trials >>


Page last updated: 2017-09-19

-- advertisement -- The American Red Cross
 
Home | About Us | Contact Us | Site usage policy | Privacy policy

All Rights reserved - Copyright DrugLib.com, 2006-2017