Losar 25mg Tablet 15'S

Introduction About LOSAR 25MG TABLET

Losar 25 mg Tablet contains losartan potassium, an angiotensin II receptor blocker (ARB) that supports healthy blood pressure control by relaxing blood vessels and improving blood flow. It is often recommended for individuals with high blood pressure and certain heart-related conditions, and in some cases, to protect kidney function in patients with co-existing health concerns. Maintaining blood pressure within the recommended range can help reduce the risk of long-term complications affecting the heart, brain and kidneys.   

Losar 25 mg may be suitable for adults who require a low starting dose of losartan, especially elderly patients, those with mild to moderate liver problems, or individuals who may need gradual blood pressure control. It is usually taken once daily, with or without food, at the same time each day to maintain consistent blood levels. Your doctor will decide the dose based on your condition and response. Swallow the tablet whole with water; do not crush or chew it. 

Before starting Losar 25 mg, inform your doctor if you have kidney or liver disease, electrolyte imbalance (like high potassium levels), or a history of dehydration. Avoid excessive salt substitutes containing potassium unless advised by your doctor. Pregnant women should not use Losar, as medicines affecting the renin-angiotensin system can harm the developing baby. If pregnancy is detected, stop taking the medicine and consult your doctor immediately. It is also not recommended during breastfeeding unless clearly necessary and prescribed by a healthcare provider.

Common side effects may include dizziness, fatigue, low blood pressure, or increased potassium levels. These effects are often mild and temporary, but if you experience persistent symptoms, severe light-headedness, swelling of the face or limbs, or difficulty breathing, seek medical attention promptly. Regular blood pressure checks and periodic kidney function and electrolyte monitoring are advised while on Losar 25 mg to ensure safe and effective use.

Uses Of LOSAR 25MG TABLET

• Mild to moderate hypertension
• Hypertensive patients with left ventricular hypertrophy
• Used to manage diabetic nephropathy

Benefits of LOSAR 25MG TABLET

Losar for Hypertension Management

Losar contains losartan, a medicine that belongs to the angiotensin II receptor blocker (ARB) group. It helps lower high blood pressure by relaxing blood vessels, allowing blood to flow more easily. Managing hypertension with Losar can reduce the risk of serious health issues such as stroke, heart attack, and kidney problems.

For best results, Losar should be taken regularly at the same time each day as prescribed by your doctor. Blood pressure monitoring, a low-salt diet, regular physical activity, and maintaining a healthy weight can further support blood pressure control. Never stop or adjust the dose without medical advice.

Losar 25 mg Tablet for Diabetic Nephropathy

Losar 25 mg is also useful for people with type 2 diabetes who have kidney issues (diabetic nephropathy). It works by lowering pressure in the blood vessels of the kidneys and reducing protein loss in the urine, which can help slow kidney damage progression. In such cases, Losar is often given alongside other measures such as strict blood sugar control, a kidney-friendly diet, and regular health check-ups. Your doctor may also monitor potassium levels and kidney function during treatment to ensure safety and effectiveness.

How LOSAR 25MG TABLET Works

Losar 25 mg Mechanism of Action

Losar 25 mg contains losartan potassium, which belongs to a group of medicines called angiotensin II receptor blockers (ARBs). It works by selectively blocking specific receptors in the body that respond to angiotensin II, a natural substance that can cause blood vessels to tighten. By blocking these receptors, Losar reduces the effects of angiotensin II, leading to relaxed blood vessels and smoother blood flow. This helps in supporting healthy blood pressure levels and reducing strain on the heart.

Losar Effect on Blood Vessels

Losar helps relax and widen the blood vessels, making it easier for the heart to pump blood throughout the body. Angiotensin II normally causes blood vessels to narrow, which increases blood pressure. By blocking its action, Losar keeps the blood vessels in a more open and relaxed state. This improved circulation can also help reduce the workload on the heart and support better oxygen delivery to organs.

How to use LOSAR 25MG TABLET

 Losar 25mg – How to Take

• Take Losar 25mg exactly as advised by your doctor.
• Swallow the tablet whole with a glass of water do not crush or chew it.
• Try to take it at the same time each day to maintain steady levels in your body.
• Do not change your dose or stop the medicine without medical guidance.

Losar 25mg – Dosage Instructions

• The dosage of Losar 25mg depends on your medical condition, age, and response to the medicine.
• Your doctor will start you on the lowest effective dose and may adjust it if needed.
• Follow the prescribed schedule strictly for best results.
• Never take more than the recommended dose to avoid side effects.

Losar 25mg – With or Without Food

• Losar 25mg can be taken with or without food.
• If it causes stomach discomfort, you may take it after a meal.
• Always take it in the same way each time (either always with food or always on an empty stomach) for consistent absorption.

What if I forgot to take LOSAR 25MG TABLET

• If you miss a dose, take it as soon as you remember.
• If it’s almost time for your next scheduled dose, skip the missed dose and continue with your regular schedule.
• Do not take a double dose to make up for the missed one.
• Try to take the medicine at the same time every day to maintain steady blood levels.
• Using reminders, alarms, or pill organizers can help prevent missed doses.
• If you frequently forget doses, consult your doctor for advice on managing your schedule or adjusting your routine.

Overdose

If you or anyone else accidentally take too much of LOSAR 25MG TABLET, consult your doctor immediately or visit the nearby hospital. The most common symptoms of overdose are low blood pressure, fast heartbeat and slow heartbeat

Side Effects Of LOSAR 25MG TABLET

Common side effects of LOSAR 25mg:

• dizziness
• general weakness, tiredness
• low blood pressure orthostatic hypotension  
• signs of low blood sugar such as fast heartbeat, shaking, sweating and/or hunger
• signs of changes in kidney function such as decreased urine output, edema, shortness of breath
• abdominal pain
• constipation
• diarrhoea

When to Seek Medical Attention?

Stop taking LOSAR 25MG TABLET and contact your doctor immediately if you experience any of the following side effects:

• signs of severe allergic reactions such as rash, itching, swelling of the face, lips, mouth/throat that may cause difficulty in swallowing or breathing

How To Manage Side Effects

Constipation

• Increase Fibre Intake:  Eat fibre-rich foods such as whole grains, oats, brown rice, beans, lentils, fresh fruits (like apples, pears, papaya), and vegetables (like spinach, carrots, broccoli) to help soften stools.
• Stay Hydrated:  Drink plenty of water (8–10 glasses daily) to keep stools soft and easy to pass.
• Regular Physical Activity: Walking, yoga, or light exercise can stimulate bowel movement.
• Warm Beverages:  Drinking a warm glass of water or herbal tea in the morning can help trigger bowel activity.
• Probiotics: Yogurt, kefir, and fermented foods like kimchi or sauerkraut can improve gut health.
• Avoid Processed Foods: Reduce intake of fast food, fried items, and excess dairy, which can worsen constipation.
• Set a Routine: Try to go to the toilet at the same time daily, preferably after meals, to train your bowel.

Stomach Pain

• Warm Compress or Heat Therapy: Place a warm water bag or heating pad on the stomach area for 15–20 minutes. Helps relax abdominal muscles and improve blood flow, easing discomfort
• Ginger tea: May reduce bloating and promote digestion.
• Peppermint tea: Can soothe digestive spasms.
• Chamomile tea: Known for calming the stomach.
• Light and Gentle Diet: Follow the BRAT diet (Bananas, Rice, Applesauce, Toast) for easy digestion. Avoid spicy, oily, or heavy meals until symptoms improve.
• Hydration: Drink warm water or clear fluids throughout the day. Staying hydrated supports digestion and helps flush irritants.
• Rest and Relaxation: Lie down in a comfortable position or try gentle stretching. Avoid heavy activity until the pain subsides.
• Gentle Movement for Gas Relief: Light walking may help release trapped gas. Avoid lying completely flat after meals.

Warning & Precautions

Pregnancy

Contraindicated

LOSAR 25MG TABLET is not advised during early pregnancy and must be strictly avoided after the third month, as it can cause serious harm to the unborn baby.

Breastfeeding

Consult your doctor

It is not known whether LOSAR 25MG passes into breast milk. Speak to your doctor before using this medicine while breastfeeding.

Driving and Using Machines

Use with Caution

Avoid driving or operating machinery if you feel dizzy, lightheaded, or drowsy after taking LOSAR 25MG TABLET.

Kidney

Consult your doctor

Not recommended in patients with severe kidney problems. Use with caution if you have narrowing of the kidney blood vessels or have recently undergone a kidney transplant.

Liver

Consult your doctor

Avoid use in severe liver impairment. Use with care in patients with mild to moderate liver problems.

Allergy

Contraindicated

Do not take LOSAR 25MG TABLET if you are allergic to losartan or any of its ingredients.

Heart Disease

Use with Caution

Take with caution if you have heart failure, valve or muscle problems, irregular heartbeat or coronary artery disease.

Use In Pediatrics

Consult your doctor

Not advised for children under 6 years or those with kidney or liver problems. May be used in children aged 6–18 years only under medical supervision.

Use In Geriatrics

Use with Caution

Elderly patients (above 75 years) should use LOSAR 25MG TABLET carefully and under medical guidance.

Other Warnings for LOSAR 25MG TABLET

Before taking LOSAR 25MG TABLET, inform your doctor if you:

• have experienced angioedema in the past (swelling of the face, lips, throat, and/or tongue)
• have ongoing or frequent vomiting or diarrhoea that causes significant loss of fluids and/or salts in the body
• have primary hyperaldosteronism (a condition where the adrenal glands produce too much aldosterone hormone)
• have cerebrovascular disease (a condition resulting from reduced blood flow to the brain)
• are following a diet that is low in salt

Who should not take [GBNKEYWORD

LOSAR 25MG TABLET is not recommended for use if you have:

• diabetes and managed with blood pressure lowering medicine containing aliskiren

Safety Advice

Safety Advice for Losar 25mg Tablet

• Take Losar 25mg exactly as prescribed by your doctor, preferably at the same time each day.
• Do not stop taking Losar 25mg suddenly without medical advice, as it may worsen your condition.
• Get your blood pressure, kidney function, and potassium levels checked regularly during use.
• Stand up slowly from sitting or lying positions to prevent dizziness or fainting.
• Keep the medicine away from moisture, direct sunlight, and out of reach of children.

Diet and Lifestyle Advice

• Include more fresh fruits, vegetables, and whole grains in your daily meals to support heart health.
• Limit salt and salty food intake, as excess sodium can reduce the effectiveness of Losar 25mg.
• Drink enough water to stay hydrated, unless advised otherwise by your doctor.
• Maintain a healthy weight through a balanced diet and regular physical activity.
• Engage in light to moderate exercise such as walking, swimming, or yoga, as recommended by your healthcare provider.
• Avoid processed and packaged foods high in sodium and unhealthy fats.
• Reduce caffeine intake from coffee, tea, or energy drinks if it triggers high blood pressure.
• Manage stress through relaxation techniques like meditation, deep breathing, or hobbies.
• Quit smoking to improve overall cardiovascular health and medicine effectiveness.

1. Losar 25 mg vs Telmisartan 20 mg:

2. Losar 25 mg vs Olmesartan 10 mg with a focus on elderly patients:

3. Losar 25 mg vs Amlodipine 5 mg in improving blood flow:

Drug - Drug interaction

1. Diuretics (Water Tablets) – e.g., Furosemide, Hydrochlorothiazide

• Interaction: Can increase the blood pressure–lowering effect, which may lead to dizziness or low blood pressure.
• Management: Blood pressure monitoring is recommended; dose adjustment may be needed.

2. Potassium-Sparing Diuretics – e.g., Spironolactone, Amiloride, Triamterene

• Interaction: May cause high potassium levels (hyperkalemia), which can affect heart rhythm.
• Management: Regular monitoring of blood potassium levels; avoid potassium supplements unless advised by a doctor.

3. Potassium Supplements / Salt Substitutes

• Interaction: May further raise potassium levels.
• Management: Avoid unless prescribed; frequent potassium checks are advised.

4. Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) – e.g., Ibuprofen, Naproxen

• Interaction: Can reduce the blood pressure–lowering effect and increase the risk of kidney damage.
• Management: Use NSAIDs cautiously; ensure good hydration; monitor kidney function regularly.

5. Lithium

• Interaction: Losar can increase lithium levels in the blood, leading to toxicity.
• Management: Regular lithium level monitoring; dose adjustment may be required.

6. Other Blood Pressure Medicines – e.g., ACE Inhibitors (Enalapril, Ramipril)

• Interaction: Can increase the risk of low blood pressure, kidney problems, or high potassium levels.
• Management: Close monitoring of blood pressure, kidney function, and potassium levels.

7. Aliskiren (especially in Diabetic Patients)

• Interaction: Increases risk of kidney damage, high potassium, and low blood pressure.
• Management: Avoid combination in diabetic patients; if used, strict monitoring is necessary.

Drug - Food interaction

1. High-Potassium Foods – e.g., Bananas, Oranges, Spinach, Potatoes

• Interaction: Losar may increase potassium levels; eating too many high-potassium foods can lead to hyperkalemia (high potassium), which affects heart rhythm.
• Management: Limit high-potassium foods if advised by your doctor; get potassium levels checked regularly.

2. Salt Substitutes Containing Potassium Chloride

• Interaction: These can further raise potassium levels, increasing the risk of heart problems.
• Management: Avoid potassium-based salt substitutes unless prescribed.

3. Grapefruit or Grapefruit Juice

• Interaction: May interfere with Losar’s metabolism in the liver, possibly altering its effectiveness.
• Management: Avoid grapefruit products while taking Losar.

4. Excessive Caffeine – e.g., Coffee, Energy Drinks

• Interaction: High caffeine intake can raise blood pressure, reducing Losar’s benefit.
• Management: Moderate caffeine consumption for better blood pressure control.

5. Very High-Salt Diet (Processed or Packaged Foods)

• Interaction: Excess salt can counteract the blood pressure–lowering benefits of Losar.
• Management: Reduce intake of salty snacks, processed foods, and pickles; choose low-sodium options.

Synopsis

More Information

FAQs About LOSAR 25MG TABLET

References

1. KD. Tripathi. Drugs Affecting Renin-Angiotensin System and Plasma Kinins. Essentials of medical pharmacology. Seventh edition. 2013. Page – 506

2. Sana Mulla; Waqas J. Siddiqui. Losartan. NIH National Library of Medicine. National Center for Biotechnology Information. [Revised in 26th February 2024] [Accessed on 11th August 2025]

3. StatPearls authors. Losartan – StatPearls. National Center for Biotechnology Information, Bookshelf. [Revised in January 2025] [Accessed on 11th August 2025]

4. Accord Healthcare. Health Products Regulatory Authority (HPRA). [Revised in January 2025] [Accessed on 11th August 2025]

Useful Diagnostic Tests

• ECG at Home
• ECG + BP Check at Home
• Full Body Checkup with ECG & BP at Home
• Comprehensive Cardiac Risk Screening with 12 Lead ECG and BP

Author Details

Written By Dr. Karthikeyan Rajagopal - M.Pharm (Pharmacology)

Reviewed For Accuracy By Dr. Thamada Manikanta Praveen - MBBS, MD (General Medicine)

Last updated on 18 Aug 2025 | 12:37 PM(IST)