Moment in time snapshot of the a broad strokes summary and core facts
Hyzaar is a combined blood pressure medicine that pairs losartan, an angiotensin II receptor blocker, with hydrochlorothiazide, a thiazide diuretic. The combination works by lowering blood pressure through complementary the driving mechanisms and may reduce the risk of stroke and some heart problems associated with long term hypertension.
Important points at a glance:
- What ailments it is used to treat: hypertension (high blood pressure)
- Live modules: losartan plus hydrochlorothiazide
- Typical pack strengths found in Australia: 100 mg/25 mg, 100 mg/12.5 milligrams, 50 mg/12.5 milligrams; some pharmacies supply other strengths such as 25 mg/12.5 milligrams or generic versions depending on stock
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Guidelines for taking Hyzaar
Take Hyzaar exactly as prescribed by your doctor. Sip water while swallowing the tablets. You can take the medicine with food or without it. Because the hydrochlorothiazide component increases urine output, many people prefer to take their dose in the morning to avoid nocturnal toilet trips.
Try to take your tablet at the same time each day to keep blood levels steady. Do not raise the dose on your own; only change dosing when instructed by a clinician.
Small children: use in children should only occur after specialist pediatric assessment and constant monitoring; it is not routinely started without specialist input.
If overdose event is suspected in Australia, contact the Poisons Information Centre on 13 11 26 or arrive at the nearest emergency department. For related safety oversight and tips for constant monitoring see continual ongoing monitoring and safety protocols proactive precautions.
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Before you press on
Tell your doctor or pharmacist about any of the following before you begin Hyzaar:
- Significant kidney disease, recent changes in urine output, or previous renal artery narrowing
- Pregnancy, plans to conceive, or suspicion you are pregnant
- Known allergies to losartan, hydrochlorothiazide, sulfonamide medicines, or any tablet ingredient
- Use of a very low salt diet or salt substitutes that contain potassium
- Chronic liver disease or a history of jaundice
- Autoimmune conditions such as systemic lupus erythematosus
- Breastfeeding or plans to breastfeed
If you are unsure whether Hyzaar is right for youconduct a comparison several options or discuss personalized recommendations in collaboration with your prescriber.
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Many prescription and nonprescription products can change how Hyzaar works or increase the risk of deleterious health effects. Give your healthcare team a complete and current list of all medicines, vitamins, herbal products and supplements you take.
- Potassium supplements and potassium-enriched salt substitutes
- Nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen or naproxen, which can reduce blood pressure control and affect renal function
- Potassium-sparing diuretics like spironolactone, amiloride, or triamterene
- Other antihypertensive medicines, including calcium channel blockers and beta blockers
- Lithium, since losartan can change lithium concentrations
- Certain antibiotics and antifungals that affect drug metabolism, for example rifampin or fluconazole
- Drugs that influence fluid or electrolyte balance, including corticosteroids
- H2 blockers such as cimetidine and other medicines that affect liver enzymes
- Some anticonvulsants or sedative barbiturates
- Bile acid sequestrants like cholestyramine, which can reduce absorption
- Some diabetes medicines, because Hyzaar can alter blood glucose or potassium
- Certain opioid analgesics and muscle relaxants that may increase dizziness or drowsiness
This is not a full inventory. Mention alcohol, tobacco and recreational drug use to your prescriber. For keeping track of metrics tips consult ongoing tracking and monitoring of performance and precautionary steps. Go back to the previous page the top.
Supervision and standard safety protective steps
- Blood pressure: check regularly at home or in clinic to assess effect and to guide dose adjustments.
- Kidney function and electrolytes: blood tests for creatinine and potassium are commonly requested after starting or changing dose.
- Hydration: if you have vomiting, diarrhea, or heavy sweating you may feel faint; seek advice before continuing treatment.
- Pregnancy: angiotensin receptor blockers can harm a fetus. Stop Hyzaar and contact your healthcare provider immediately if you become pregnant.
- Lightheadedness and activity: rise slowly from sitting or lying to avoid lightheadedness. Avoid driving or operating machinery until you know how Hyzaar affects you. Limit alcohol until you are sure of your response.
- Type 2 diabetes is a form of diabetes: discuss changes to diabetes medicines with your prescriber because blood glucose and electrolytes may be affected.
- Over the counter medicines: some cold remedies and pain medicines can raise blood pressure. Ask a pharmacist before self medicating. See also related links intercommunications fuel collaboration and innovation..
Possible immediate undesirable effects and when to seek care
Visit the emergency department for a severe injury:
- Widespread rash, hives, swelling of the face, lips, tongue or throat suggestive of severe allergic reaction
- Shortness of breath, new wheeze or chest tightness
- Fainting, collapse, sudden severe dizziness or marked confusion
- Big changes in urine amount or trouble passing urine
- Dark urine, yellow skin or eyes, or unexpected bleeding or bruising
- Intense belly pain
- Fast, slow or irregular heartbeat or new palpitations
- Marked muscle weakness or severe cramps which could indicate an electrolyte problem
Common or usually mild effects:
- Headache symptoms
- Mild dizziness or fatigue
- Shifts in sexual appetite or performance
- Greater sensitivity to sunlight
Note: a persistent dry cough is more typically linked to ACE inhibitors than ARBs such as losartan. If you had a cough after an ACE inhibitor, discuss this with your prescriber when switching.
For dosing information refer to hyzaar administration guidelines. Move back toward the top.
Instructions when a dose is missed
If, by mistake, you forget a dose, take it as soon as you remember unless it is less than four hours before your next scheduled dose. In that case skip the forgot to take the dose and resume your normal schedule. Do not take two doses at once to make up for the missed tablet.
Another set of options and analogous medicines
When Hyzaar is unsuitable, not tolerated, or unavailable, prescribers may choose other options based on your medical history, kidney function, and other medications.
- Single agent choices:
- An ARB drug called losartan alone (an ARB) or hydrochlorothiazide alone (a thiazide diuretic); some clinicians combine separate agents if a fixed combination is not suitable
- Other ARB plus thiazide fixed combinations:
- Telmisartan/hydrochlorothiazide (for example Micardis Plus)
- Irbesartan as a pharmaceutical agent/hydrochlorothiazide (for example Avalide or generics)
- Valsartan/hydrochlorothiazide (for example Co-Diovan or generics)
- Candesartan as an antihypertensive agent/hydrochlorothiazide (for example Atacand Plus)
- ACE inhibitor plus thiazide combinations where appropriate:
- Lisinopril/hydrochlorothiazide (for example Zestoretic or generics)
- Perindopril/indapamide formulations (for example Coversyl Plus)
- Other classes commonly used in combination therapy:
- Calcium channel blockers such as amlodipine, sometimes available in fixed combinations
- Beta blockers like metoprolol when clinically indicated
See cost structure for a rough cost comparison in Australian dollars (AUD). Return again to this spot the top.
Prices and cost guidance (Australia)
Out of pocket cost depends on whether the medicine is subsidised via the PBS, the brand or a generic product, pack size with the addition of the dispensing pharmacy. The ranges below are approximate and may vary.
- Hyzaar (brand or generic fixed combination):
- If PBS subsidised: general patient co-payment is typically around AUD 30 to 32 per script; concession co-payment is commonly about AUD 7 to 8.
- Private purchase or paying brand premium: approximate private prices for a 30 tablet pack often range from AUD 15 up to AUD 45 depending on strength and brand.
- Other ARB/thiazide fixed combinations (irbesartan/HCTZ, valsartan/HCTZ, candesartan/HCTZ, telmisartan/HCTZ):
- When PBS listed they usually attract similar co-payment bands.
- Private prices typically range from around AUD 18 to AUD 55 for 30 tablets, varying by brand and strength.
- Separate generic single agents (losartan or hydrochlorothiazide alone):
- Often cheaper per script, but using two separate prescriptions to recreate combination therapy may be less convenient and sometimes more costly overall.
Money saving tips: check PBS eligibility and concession status, ask your pharmacist about generic varied options and brand premiums, and discuss therapeutic equivalents under the supervision of your prescriber.
Regulatory and legal datarmation
- Classification: Hyzaar (losartan with hydrochlorothiazide) is a Schedule 4 prescription only medicine in the land of Australia. A valid prescription from an Australian registered prescriber is required.
- Regulator: The Therapeutic Goods Administration (TGA) regulates the quality, safety and supply of prescription medicines located within Australia.
- PBS: Many strengths and brands are listed on the Pharmaceutical Benefits Scheme; actual patient co-payments depend on eligibility, concession status and any brand premiums.
- Electronic prescribing: ePrescriptions are widely accepted in Australian pharmacies; dispensing can use tokens or an active script list depending on the pharmacy system.
- Online pharmacies: use Australian-registered pharmacies that require a valid prescription and are operated by registered practitioners and pharmacists. Avoid overseas sites that supply prescription medicines without a prescription.
- Personal importation: under current TGA rules a person may import a limited personal supply (for example up to three months) if they hold a valid prescription and meet specified conditions; always check the latest TGA guidance before importing medicines.
- Maternity care for pregnancy and lactation: products containing losartan are contraindicated in pregnancy and can cause fetal harm. Stop the medicine if pregnancy is confirmed and seek immediate medical advice. Discuss breastfeeding with your clinician before continuing treatment.
- Disposal: return unwanted or expired tablets to your local pharmacy for safe disposal through the Return Unwanted Medicines program.
Always obtain individual clinical advice from your GP or pharmacist. See a general survey of the material or ongoing the act of monitoring and precautionary steps. You may go back to the top.
Permanent we require additional storage for our inventory. handling guidelines
- Keep at room temperature, ideally between 15 and 30 C, and protect from strong light.
- Store tablets in their original container, tightly closed and dry.
- Store medicines where children and pets cannot reach them.
- Do not use beyond the expiry date; return unused medicines to your pharmacy for disposal.
For dosing or a dose was skipped questions see what is the recommended way to take Hyzaar or forgot to take a dose management tips.
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