Common use

Cozaar is a widely prescribed blood pressure medication containing losartan potassium as its active ingredient. It belongs to a class of drugs known as angiotensin receptor blockers (ARBs), which work by selectively blocking angiotensin II receptors in the body. Angiotensin II is a naturally occurring protein that causes blood vessels to constrict and tighten, which drives blood pressure up to potentially dangerous levels. By blocking these receptors, Cozaar effectively prevents this constriction, allowing blood vessels to relax and widen. This action decreases total peripheral resistance, lowers the concentration of aldosterone in the blood, reduces arterial pressure, decreases pressure in pulmonary circulation, and produces a mild diuretic effect. Cozaar is primarily used as a hypertension treatment for adults and children over six years of age. Additionally, physicians prescribe this angiotensin receptor blocker for left ventricular hypertrophy to reduce the risk of stroke prevention in patients with high blood pressure and an enlarged heart. Losartan also provides significant kidney protection in patients with type 2 diabetes and diabetic nephropathy, slowing the progression of kidney disease. When you buy Cozaar online, you gain access to one of the most trusted ARB medications available, with decades of clinical research supporting its safety and effectiveness.



Dosage and direction

Cozaar may be taken with or without food, typically once a day at the same time each day for best results. The usual starting dose of losartan for most adults with hypertension is 50 mg once daily, though your doctor may adjust this based on your individual blood pressure response. Some patients may benefit from dividing the total daily dose into two separate intakes for more consistent blood pressure control throughout the day. The maximum recommended dose is 100 mg per day. For patients being treated for stroke prevention with left ventricular hypertrophy, the typical starting dose is 50 mg once daily, with the possibility of adding a low-dose diuretic or increasing the dose to 100 mg. Follow all recommendations from your physician carefully and do not change the prescribed dose without medical consultation. It may take several weeks of consistent use before you experience the full blood pressure-lowering benefits of this medication. Continue taking Cozaar even if you feel well, as high blood pressure often presents no noticeable symptoms.



Precautions

Before you buy losartan or begin treatment with Cozaar, there are several important precautions to consider. In patients with dehydration — for example, those who have been treated with high doses of diuretics, following a restricted salt diet, or experiencing prolonged vomiting or diarrhea — there is an increased risk of arterial hypotension (excessively low blood pressure) when starting this ARB medication. Blood volume should be corrected before beginning therapy or a lower starting dose should be considered. In patients with liver cirrhosis or significant hepatic impairment, the concentration of losartan in blood plasma increases considerably, so a reduced dose may be necessary. Let your doctor know if you have any history of liver or kidney disease, congestive heart failure, or renal artery stenosis. Cozaar increases the level of potassium in the blood, which can be dangerous if levels rise too high. Inform your doctor if you are taking potassium supplements, using a potassium-containing salt substitute, or taking any other medications that may raise potassium levels. Regular blood tests to monitor kidney function and potassium levels are recommended during treatment. Patients should also avoid becoming dehydrated during exercise or in hot weather, as this can lead to a dangerous drop in blood pressure.



Contraindications

Cozaar is contraindicated in patients with known hypersensitivity to losartan or any of its inactive ingredients. This blood pressure medication must not be used during pregnancy, as ARB drugs that act directly on the renin-angiotensin system can cause injury and even death to a developing fetus, particularly during the second and third trimesters. Breastfeeding mothers should not take Cozaar, as it is unknown whether losartan passes into breast milk. Other contraindications include use in infants and very young children, patients with severe arterial hypotension, and those with hyperpotassemia (dangerously elevated potassium levels). Patients with bilateral renal artery stenosis or stenosis in a solitary kidney should use this angiotensin receptor blocker with extreme caution. Do not use Cozaar in combination with aliskiren-containing products if you have diabetes.



Possible side effect

Like all medications, Cozaar may cause side effects, although many patients tolerate this hypertension treatment very well compared to other blood pressure medications. Common side effects include diarrhea, muscle cramps or pain, dizziness or lightheadedness (especially when standing up quickly), insomnia, nasal congestion, and upper respiratory infections. Some patients may experience a persistent cough, though this is significantly less common with ARB medications like losartan compared to ACE inhibitors. Other reported side effects include increased serum potassium, loss of appetite, dry mouth, fatigue, and back pain. In rare cases, angioedema (swelling of the face, lips, throat, or tongue) may occur, which requires immediate emergency medical attention. Seek medical help right away if you experience signs of a severe allergic reaction, unexplained muscle pain or weakness, or symptoms of high potassium such as slow heart rate, weakness, and tingling. If any side effects develop or change in intensity during your treatment, inform your doctor about them promptly so your therapy can be adjusted if necessary.



Drug interaction

Cozaar may interact with several other medications, so it is important to inform your doctor about all drugs you are currently taking. Diuretics that conserve potassium in the body, such as spironolactone, triamterene, and amiloride, can increase the risk of hyperpotassemia when taken concurrently with losartan and other potassium-raising medications. Ketoconazole (Nizoral) is known to decrease the conversion of losartan to its active metabolite, potentially reducing the effectiveness of this blood pressure medication. Nonsteroidal anti-inflammatory drugs (NSAIDs), including ibuprofen and naproxen, may reduce the antihypertensive effect of Cozaar and can also increase the risk of kidney problems when combined with ARB therapy. Lithium levels may increase when used with losartan, requiring closer monitoring. Rifampin and fluconazole may also affect losartan metabolism. Always consult your healthcare provider before starting or stopping any medication while on Cozaar to avoid potentially harmful interactions.



Missed dose

If you missed a dose of Cozaar, take it as soon as you remember. However, if it is almost time for your next scheduled intake, skip the missed dose entirely and return to your regular dosing schedule. Do not try to compensate for a missed dose by taking a double dose or an extra tablet, as this could cause your blood pressure to drop too low. Maintaining a consistent daily routine for taking your losartan medication helps ensure steady blood pressure control and maximizes the therapeutic benefits of this hypertension treatment.



Overdose

If you suspect that you have taken too much Cozaar, seek immediate medical attention or contact a poison control center right away. Symptoms of losartan overdose may include a heartbeat that becomes extremely slow or unusually rapid, dangerously low blood pressure resulting in severe dizziness or fainting, and dehydration. An overdose of this angiotensin receptor blocker can be serious and requires prompt professional medical evaluation. Treatment is typically supportive, focusing on restoring normal blood pressure and heart rate. Do not induce vomiting unless specifically instructed to do so by a medical professional.



Storage

Store Cozaar in a dry place away from direct sunlight and moisture at room temperature between 59 and 86 degrees Fahrenheit (15 to 30 degrees Celsius). Keep the medication in its original container with the lid tightly closed. Store out of the reach of children and pets. Do not use Cozaar after the expiration date printed on the packaging. If you buy Cozaar online or from a pharmacy, always check the packaging for integrity before use.



Disclaimer

We provide only general information about medications which does not cover all directions, possible drug interactions, or precautions. Information at the site cannot be used for self-treatment and self-diagnosis. The specific information about Cozaar generic and brand-name losartan products presented here is for educational purposes only. Any specific instructions for a particular patient should be agreed with your health care adviser or doctor in charge of the case. We disclaim reliability of this information and mistakes it could contain. We are not responsible for any direct, indirect, special or other indirect damage as a result of any use of the information on this site and also for consequences of self-treatment.