Cozaar Medication Information:

Price Break On Cozaar
Generic is available for less money: Generic Losartan

Cozaar medication comes in several different strengths; click on the strength you need to view prices from pharmacies competing to earn your business.

Cozaar 12.500 mg
Cozaar 25 mg
Cozaar 50 mg
Cozaar 100 mg

Cozaar Information

Cozaar also known as Losartan Potassium is a drug often prescribed to patients diagnosed with diabetic neuropathy and high blood pressure. Cozaar cannot cure the conditions of diabetic neuropathy and high blood pressure, but cozaar can help slow the process and get a patient's blood pressure under control.

How Cozaar works

Cozaar is taken orally and is considered to be an angisotensin II receptor blocker, meaning it blocks the receptor in the blood that cause vasoconstriction, or narrowing of the blood vessels. When the drug Cozaar blocks these angiotensin II receptors, blood vessels in the body begin to relax and dilate. When blood vessels relax and dilate, it makes blood easier to flow in and out of your body's vascular system, thus helping to lower blood pressure. By patients taking the right recommended doses of Cozaar and lowering blood pressure, Cozaar also helps fight off many factors that can manifest themselves with long term high blood pressure and decrease risk factors for stroke and heart attack. For patients affected by diabetic neuropathy, Cozaar has been shown to reduce the progression of diabetic neuropathy and slowing the progression of other diseases such as kidney damage, making the need for dialysis much less in patients who use this drug.

How is Cozaar taken

Cozaar is taken orally and the recommended dosage for Cozaar depends on a number of different factors. The factors that will determine your cozaar usage include: the condition you are being treated for, other pre-existing medical conditions, other medications you may be taking, and how you respond to Cozaar. Depending on how a patient responds to Cozaar will determine if the medication prescribed should be lower or higher, and if it needs to be taken once or twice a day. Cozaar is taken in the morning with patients that take double doses taking a pill by mouth in the morning as well as in the evening.

Side Effects

Side effects are common among any and all medications. Some side effects are usually tolerable, while a few can cause serious damage to your body, however; most patients experience no side effects, and if side effects are experienced they are tolerable. Side effects associated with the drug Cozaar for patients with high blood pressure include: Infection, dizziness, nasal congestion, and back pain. Side effects associated with the drug Cozaar for patients with diabetic neuropathy include: diarrhea, fatigue, anemia, weight gain, low blood pressure, and increased blood potassium levels. Potentially serious side effects of Cozaar include: unexplained rash, itching or peeling of the skin, blisters on the skin, swelling of the head or the neck (including face, lips, tongue, and throat), decreased urine output, and difficulty breathing.

Ask your doctor before taking or if you have heart disease, liver disease, diabetes, any allergies that include being allergic to certain food, dyes, or preservatives. Also ask your doctor if you are breastfeeding, pregnant, or on dialysis. Always tell your doctor of the medicines; whether they be over the counter or prescription, vitamins, and herbal supplements you are on. Cozaar does not react well with some medications, so it is best if your doctor knows everything you are taking.

Safety Information:

Dosages for Cozaar can vary. Depending on how high or low your blood pressure continues to be will depend if the dosage prescribed need to be higher or lower and if the medication Cozaar needs to be taken once or twice a day.


The dosage of Cozaar depends on a patient's response to the medicine along with a few other factors. For high blood pressure the recommended starting dose for a patient is:
Pill- 50 mg by mouth once a day

For diabetic neuropathy the recommended starting dose for a patient is:
Pill- 50 mg by mouth once a day

Visual Description:

The Cozaar 50 mg tablet is shaped like an egg or tear drop, and the coloring of the pill varies, but is mostly a greenish blue, or dark green pill. It is not a capsule, but an actual chalky pill. On one side of the pill you will see the name Cozaar and on the other side will be the letters and numbers MRK952.

About Cozaar

What Cozaar is used for


  • lowering high blood pressure

  • providing kidney protection by delaying the worsening of kidney disease in type 2 diabetic patients with protein in the urine (proteinuria) and high blood pressure.

Children (6-16 years)

  • lowering high blood pressure

What Cozaar does

COZAAR belongs to a class of drugs known as angiotensin II receptor antagonists. Its action is to lower blood pressure by relaxing the blood vessels.

When Cozaar should not be used

Do not take COZAAR if you are allergic to losartan potassium or any of the nonmedicinal ingredients (see What the important nonmedicinal ingredients are:).

What the medicinal ingredient is

Each tablet of COZAAR contains losartan potassium.

What the important nonmedicinal ingredients for Cozaar are

COZAAR contains the following nonmedicinal ingredients: corn starch, hydroxypropyl cellulose, hydroxypropyl methylcellulose, lactose, magnesium stearate, microcrystalline cellulose, titanium dioxyde, and carnauba wax.

COZAAR 25 mg, 50 mg and 100 mg tablets contain the following amounts of potassium: 2.12 mg (<1 mmol), 4.24 mg (<1 mmol), and 8.48 mg (<1 mmol) respectively.

Although COZAAR tablets contain potassium, this amount is too small to replace potassium supplements. If your physician has prescribed potassium supplements, continue to follow his advice.

What dosage forms Cozaar comes in

COZAAR tablets of 25 mg, 50 mg and 100 mg.

Warnings and Precautions

Serious Warnings and Precautions

COZAAR should not be used during pregnancy. If you discover that you are pregnant while taking COZAAR, stop the medication and please contact your physician.

BEFORE you use COZAAR talk to your physician or pharmacist if:

  • you perform tasks which may require special attention (for example, driving an automobile or operating dangerous machinery). Almost all patients can, but you should not perform these tasks until you know how you respond to your medicine.

  • you have or have had any medical problems, and about any allergies.

  • you are taking potassium supplements, potassium-sparing agents or salts substitutes containing potassium.

  • you are taking any medication including non-prescription and herbal products.

  • you have recently suffered from excess vomiting or diarrhea.

  • you have liver, kidney, heart or heart valve disease.

  • you are allergic to this drug or to any ingredient in the formulation.

You are pregnant, breast-feeding or thinking of becoming pregnant?

Taking COZAAR during pregnancy can cause injury and even death to your baby. This medicine should not be used during pregnancy. If you are planning to become pregnant while taking COZAAR, contact immediately your physician.

It is possible that COZAAR passes into breast milk. You should discuss with your physician about taking COZAAR while breast-feeding.

Remember that your physician has prescribed this medicine only for you. Never give it to anyone else.

Interactions with Cozaar

As with most medicines, interaction with other drugs is possible. Therefore, do not take any other medicines unless you have discussed the matter with your physician or your pharmacist. It is important to tell your physician if you are taking:

  • Lithium salts

  • Digitalis

  • Warfarin

  • Rifampin

  • Erythromycin

  • Fluconazole

  • Phenobarbital

  • Cimetidine

  • Non-steroidal anti-inflammatory drugs (such as indomethacin)

  • Diuretics (water pills)—patients on diuretics may occasionally experience an excessive reduction of blood pressure after initiation of therapy with COZAAR

  • Potassium supplements or salt substitutes containing potassium

Certain medicines tend to increase your blood pressure, for example, some, but not all, non-prescription preparations for appetite control, asthma, colds, coughs, hay fever and sinus problems.

Proper Use of Cozaar

Usual dose

  • Take COZAAR every day exactly as your physician has instructed. It is important to continue taking COZAAR for as long as your physician prescribes it in order to maintain smooth control of your blood pressure.

  • COZAAR may be taken with or without food, but it should be taken consistently with respect to food intake, at about the same time every day.


  • For adult patients, the usual starting dose is 50 mg once daily. The usual dose range is 50 to 100 mg once daily.

  • Most older patients require the same dose as younger patients, since COZAAR works equally well and is equally well tolerated by most older and younger adult patients.

  • For pediatric patients (6-16 years of age) who can swallow tablets, the recommended dose is 25 mg once daily in patients between 20 and 49 kg. The dose can be increased to a maximum of 50 mg once daily. In patients greater or equal to 50 kg, the starting dose is 50 mg once daily. The dose can be increased to a maximum of 100 mg once daily.

Type 2 diabetes patients with proteinuria and hypertension

  • For adults, the usual starting dose is 50 mg once daily. The dose may be increased to 100 mg once daily.


In case of an overdose, contact your physician immediately or go to the nearest emergency room so that medical attention may be given promptly.

For management of a suspected drug overdose, contact your Regional Poison Control Centre.

Missed dose

Try to take COZAAR daily as prescribed. However, if you miss a dose, do not take an extra dose. Just resume your usual schedule.

Side Effects for Cozaar and What to Do About Them

Any medicine may have unintended or undesirable effects, so-called side effects. Some patients may experience fatigue, hives, taste alteration or vomiting. Tell your physician or pharmacist promptly about these or any other unusual symptoms.

Some patients, especially those with type 2 diabetes with protein in the urine, may also develop increased levels of potassium in their blood.

Serious Side Effects, How Often They Happen and What to Do About Them
Symptom/Effect Talk with your doctor or pharmacist Stop taking drug and call your doctor or pharmacist
Only if severe In all cases
Uncommon Allergic reactions involving swelling of the face, lips, throat, and/or tongue which may cause difficulty in breathing or swallowing    
Low blood pressure    
Muscle pain    
Muscle tenderness or weakness or dark/brown urine (sign of rhabdomyolysisa)    
a. Rhabdomyolysis is a muscle-wasting disease which in rare cases can lead to kidney failure.

This is not a complete list of side effects. For any unexpected effects while taking COZAAR, contact your physician or pharmacist.

Cozaar Facts

COZAAR works by relaxing blood vessels to reduce blood pressure.

COZAAR has been proven to reduce the risk of strokes.

COZAAR may be useful in delaying development of kidney disease in diabetes patients.

COZAAR is used in the treatment of high blood pressure.


Technical Information

What Others Are Saying About cozaar:

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