Cozaar (Losartan)

How Cozaar works

Losartan blocks the action of angiotensin II at its receptor, reducing the narrowing of blood vessels. This can lower blood pressure and change pressure within the kidneys. For certain patients with type 2 diabetes and protein in the urine, those kidney effects form part of the reason the medicine is selected.

It is not a cure for hypertension or a tablet to take only when a reading is high. Blood pressure often improves without a noticeable change in how you feel. Regular dosing and monitoring help us judge whether the treatment is providing control without causing troublesome low pressure, potassium changes or kidney problems.

We review the exact indication rather than assume every patient receives the same benefit. A prescription for hypertension differs from a kidney-protection plan that also needs urine and blood monitoring. Your other conditions and medicines influence both the treatment choice and how follow-up should be arranged.

Assessment before treatment

Bring home readings, current medicines and recent blood tests. Tell us about dizziness, fainting, reduced urine, swelling or a recent illness causing fluid loss. We also ask about kidney disease, diabetes, heart conditions and any previous reaction to an ACE inhibitor or an angiotensin receptor blocker.

Potassium and kidney function are important before starting treatment. Some people need a more cautious dose approach because of dehydration, liver problems, kidney disease or diuretic use. We explain which results are needed and whether an examination or additional assessment is required before deciding on a prescription.

For a refill, tell us the dose actually taken and any hospital or specialist changes. A medicine may have been paused during an illness and not yet restarted, or a new treatment may have replaced it. Bring the latest instructions so another supply follows the intended current plan.

• Bring home readings and any recent kidney or potassium blood tests.
• List potassium supplements, salt substitutes and pain medicines.
• Tell us about pregnancy plans, dehydration or a recent illness.

Cozaar price and medication purchase

The cost depends on whether branded Cozaar or generic losartan is supplied, the tablet strength and quantity. The product shown beside this article is generic losartan alone. Combination tablets containing hydrochlorothiazide are different prescriptions and should not be compared or substituted as though they contain only losartan.

For a market reference, discounted pharmacy listings for generic losartan 50 mg range from approximately $7.98 to $10.28 for 30 tablets. A published listing for 90 tablets is approximately $15.23. These examples concern the same strength in different quantities and do not determine the amount you should take each day.

Retail prices are estimates and may change frequently. We confirm the prescribed product and medication charge before purchase. Consultation costs are separate, and the quantity supplied should fit your monitoring and review plan rather than simply match the pack with the lowest unit price.

Taking losartan consistently

Take the dose on your prescription at a consistent time, with or without food. The schedule can differ according to the indication and response. The strength displayed here is a product option, not a universal starting dose. Do not change the number of tablets because someone else takes a different amount.

Blood pressure response is assessed over time. If readings remain above your range, bring a reliable record rather than add extra tablets. We consider the dose, regular use, other medicines and possible contributing conditions before changing treatment. One unexpectedly high reading does not always require a medication increase.

If a dose is forgotten, take it when remembered unless the next is nearly due. Skip rather than double when doses would be too close together. Contact us about restarting after a longer interruption or if the medicine was stopped during illness. The reason for the gap matters as much as its length.

Potassium and kidney function

Losartan can increase potassium and affect kidney function. Blood tests are arranged before treatment and after starting or relevant dose changes, with ongoing checks according to your risk. A small change in a result may be interpreted differently from a large or rapid deterioration, so let the treating team review the values in context.

Symptoms are not a reliable way to judge potassium. Some people have an important abnormality without feeling unwell. Weakness, palpitations or a substantial reduction in urine deserves prompt advice, but feeling well does not replace the scheduled tests. Bring outside results if another service has already checked them.

If potassium or kidney results change, we may need to repeat testing, review interacting medicines or adjust treatment. Do not try to correct a result by independently changing supplements or cutting tablets. The appropriate response depends on the complete clinical picture and sometimes needs urgent assessment.

Salt substitutes and interactions

Potassium supplements and potassium-based salt substitutes can increase the risk of high potassium. Some electrolyte drinks and nutritional powders contain potassium too. Tell us about them before adding a product. Advice about food should reflect your results and health rather than a blanket restriction imposed simply because losartan is prescribed.

Ibuprofen, naproxen and other anti-inflammatory pain medicines can affect blood pressure and kidney safety, particularly with a diuretic or dehydration. We also review lithium, spironolactone, other potassium-raising medicines and selected antibiotics. Some combinations are useful with monitoring, while others may need an alternative.

Losartan should not simply be added to an ACE inhibitor or another medicine affecting the same system without a specific review. Aliskiren has important restrictions, including with diabetes. Give every prescribing service the full list so that apparently separate blood pressure, kidney and heart prescriptions are considered together.

Dizziness and other side effects

Dizziness can occur, especially when starting treatment, after an increase or during dehydration. Rise slowly and avoid driving if you feel faint. Tell us about repeated lightheadedness, falls or unusually low readings. We consider other medicines and the underlying condition rather than assume one tablet is the sole explanation.

Persistent stomach symptoms, muscle weakness or palpitations should be reported. A serious allergic reaction or swelling involving the mouth or throat needs urgent medical care. Although losartan differs from an ACE inhibitor, a previous history of swelling or a serious medication reaction still needs discussion before prescribing.

If you had a cough on an ACE inhibitor, losartan may be considered as an alternative in an appropriate plan. It is not a guarantee that every cough will resolve, because respiratory and other causes may coexist. Tell us if symptoms continue so that they receive assessment rather than an indefinite series of medicine switches.

Pregnancy and illness plans

Losartan can harm an unborn baby and must be reviewed before pregnancy. Tell us when planning to conceive so that an alternative can be arranged. If pregnancy occurs, stop losartan and contact a clinician promptly. Blood pressure and kidney care should continue through a suitable replacement plan rather than be left untreated.

Vomiting, diarrhea, fever or inability to drink can change kidney function and blood pressure. Contact the treating team for advice about losartan and any diuretic. Some situations require a temporary pause, but the plan should explain the reason, restart timing and whether repeat testing is needed.

Before surgery, imaging procedures or a hospital admission, provide the medication list and follow the relevant team's instructions. If treatment is changed while you are unwell, bring the discharge plan to follow-up. Do not restart an older dose automatically when another service has recommended a different regimen.

Monitoring blood pressure at home

Use a suitable cuff, rest before measuring and support the arm. Record readings at agreed times rather than repeatedly checking during stress or immediately after activity. A consistent log helps us assess the effect of treatment and identify a pattern that may be missed by one clinic measurement.

We discuss your target and what to do if readings are outside it. Severe headache, chest pain, breathlessness, weakness, confusion or visual changes alongside a very high reading needs urgent assessment. Do not treat a possible emergency by taking extra losartan or waiting for a routine appointment.

Home monitoring complements laboratory tests. A good blood pressure result cannot tell us whether potassium or kidney function is safe. Bring both types of information to a review, along with symptoms and any changes in the medicines you take, so the decision reflects more than the reading alone.

Ongoing prescribing and follow-up

At review, we consider response, side effects, test results and whether the treatment routine is manageable. If control is inadequate, we review regular use and the wider plan before changing the dose. Kidney-related treatment may also need urine monitoring and coordination with the specialist managing that condition.

Selected stable prescriptions can be reviewed online with adequate records and monitoring. A new diagnosis, overdue results or symptoms suggesting another problem may require testing or an examination. We explain the next step before deciding on a further supply rather than simply repeat an older prescription without context.

Request a refill before running out and tell us about new medicines or recent illness. When losartan remains appropriate, we help coordinate the next supply and confirm the review plan. If cost or access to blood tests is difficult, discuss it early so that a workable arrangement can be considered.

Common questions