For US Healthcare Professionals
Sign In
User name    (Forgotten?)

Password     (Forgotten?)


 Remember me

You can use your MerckMedicus user name and password.

Need to Register?
Viewing files designated with requires a PDF reader
Opening files designated with requires a Zip reader

Please sign in using the form to the left to view the information resources and services for HYZAAR.

HYZAAR is available through the Merck Patient Assistance Program.

You can also visit cozaar.com

Now available! Receive informative journal reprints upon request at no cost.

Product Highlights

Product Highlights

Learn more about HYZAAR® (losartan potassium-hydrochlorothiazide tablets).

Please sign in using the form to
the left to access these resources.

Educational Resources

See for ALL Products
For Healthcare Professionals
For Your Patients
Journal Reprints
Please sign in using the form to
the left to access these resources.
Devereux Reprint
Devereux RB et al. Blood pressure reduction and antihypertensive medication use in the losartan intervention for endpoint reduction in hypertension (LIFE) study in patients with hypertension and left ventricular hypertrophy. Current Medical Research and Opinion. 2007;23:259-270.
One unit per package
(Limit 5 per month)
Salerno Reprint
Salerno CM, Demopoulos L, Mukherjee R, Gradman AH. Combination Angiotensin Receptor Blocker/Hydrochlorothiazide as Initial Therapy in the treatment of Patients with Severe Hypertension. J Clin Hypertens. 2004;6:614–620.
One unit per package
(Limit 1 per month)
Gradman Reprint
Gradman AH, Brady WE, Gazdick LP, Lyle P, Zeldin RK. A multicenter, randomized, double-blind, placebo-controlled, 8-week trial of the efficacy and tolerability of once-daily losartan 100 mg/hydrochlorothiazide 25 mg and losartan 50 mg/hydrochlorothiazide 12.5 mg in the treatment of moderate-to-severe essential hypertension. Clin Ther. 2002;24:1049–1061.
One unit per package
(Limit 5 per month)
No educational resources for patients are available at this time.
You can request a number of complimentary resources, where available, including:
  • Patient Educational Materials
  • Disease Management Tools, and more
Signing in using the form to the left will give you access to educational resources for other products.

Prescribing Information

HYZAAR® (losartan potassium-hydrochlorothiazide tablets)
Prescribing Information Prescribing Information [PDF]
Patient Product Information Patient Product Information [PDF]

Viewing files designated with requires
a PDF reader

ALL MERCK PRODUCTS
A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z
To see Prescribing Information for other Merck products, click on the letter corresponding to the product name.

Product Samples

HYZAAR® (losartan potassium-hydrochlorothiazide tablets) HYZAAR® (losartan potassium-hydrochlorothiazide tablets)
Please sign in using the form to
the left to gain access to this service.

eMedical Forum Webcasts

Upcoming Webcasts View All Webcasts

My Scheduled Webcasts
Register for Webcasts
Attend a live, online educational program hosted by medical thought leaders, and interact with the speaker and the other participants.
Please sign in using the form to the left to access this service.
To view the details of upcoming webcasts that you have registered for, sign in now in the upper left corner of the page.

Archived Webcasts View All Archives

Access our archived eMedical Forum Webcasts, which are available for your viewing at any time.
Please sign in using the form to the left to access this service.

Important Product Information

HYZAAR is indicated for the treatment of hypertension. This fixed-dose combination is not indicated for initial therapy of hypertension, except when the hypertension is severe enough that the value of achieving prompt blood pressure control exceeds the risk of initiating combination therapy in these patients.

HYZAAR is indicated to reduce the risk of stroke in patients with hypertension and left ventricular hypertrophy, but there is evidence that this benefit does not apply to black patients.

Selected important cautionary information

HYZAAR is contraindicated in patients who are hypersensitive to any component of this product. Because of the hydrochlorothiazide (HCTZ) component, HYZAAR is also contraindicated in patients with anuria or hypersensitivity to other sulfonamide-derived drugs.

USE IN PREGNANCY: When used in pregnancy during the second and third trimesters, drugs that act directly on the renin-angiotensin system can cause injury and even death to the developing fetus. When pregnancy is detected, HYZAAR should be discontinued as soon as possible. See WARNINGS: Fetal/Neonatal Morbidity and Mortality.

HYZAAR is not recommended for patients with severe renal impairment (creatinine clearance <30 mL/min). HYZAAR is not recommended as a means of titration for patients with hepatic impairment because the appropriate 25-mg starting dose of losartan cannot be given. In patients who are volume-depleted (eg, those treated with diuretics), symptomatic hypotension may occur after initiation of therapy with HYZAAR. This condition should be corrected prior to administration of HYZAAR.

The most common adverse events occurring with various doses of losartan/HCTZ (n = 858) at a rate >1% above placebo (n = 173) were upper respiratory infection (6% vs 5%), dizziness (6% vs 3%), back pain (2% vs 1%), palpitations (1% vs 0%), and rash (1% vs 0%).

Before prescribing HYZAAR, please read the Prescribing Information and Patient Product Information.

COZAAR and HYZAAR are registered trademarks of E.I. du Pont de Nemours and Company, Wilmington, Delaware, USA
FOSAMAX PLUS D is a trademark of Merck & Co., Inc.
VYTORIN and ZETIA are registered trademarks of MSP Singapore Company, LLC. View the Merck/Schering-Plough privacy policy.
All other brand names are registered trademarks of Merck & Co., Inc.
MerckServices and MerckSource are registered trademarks of Merck & Co., Inc.
MerckProductServices and MerckMedicus are trademarks of Merck & Co., Inc.

Contact Us

Ask a Product-Related Question or Report an Adverse Event
Let us assist you with information and services related to Merck and its products.
Get Started

Live Product Discussion
Representatives are currently not available. See hours of operation and other customer service options.

Get site technical support, or call 1-800-489-5119, for site technical issues.

20752836(1)-11/07-EBS-PHY