xirtam h tablet - Hydrochlorothiazide (12.5mg) + Olmesartan Medoxomil (20mg) medicine

Doltan H 12.5mg/20mg Tablet: Complete Medicine Guide

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🏭 Bayer Zydus Pharma Pvt Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Oct 21, 2026
⚠️ Nephrotoxicity Risk 🤰 Pregnancy Category Not recommended. Use of this medicine during pregnancy can cause fetal harm. Discontinue as soon as pregnancy is detected and consult your doctor. 📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for hypertension.
Reviewed by
SaathiMed Expert Panel | Oct 21, 2026
🩺
Medically Fact-Checked & Clinically Verified by SaathiMed Clinical Review Board
Clinical Reference Standards: CDSCO (Central Drugs Standard Control Organisation), Indian Pharmacopoeia (IP) & WHO | Last Updated: September 2026

When to Call Your Doctor IMMEDIATELY

  • Severe dizziness or fainting
  • Decreased urine output or swelling in legs
  • Irregular heartbeat or palpitations
  • Severe abdominal pain or vomiting
  • Signs of allergic reaction: rash, itching, swelling of face or throat
  • Yellowing of skin or eyes
  • Persistent muscle cramps or weakness

If experiencing severe symptoms, call emergency services immediately.

What is xirtam h tablet used for?

This medicine is a combination of hydrochlorothiazide and olmesartan medoxomil used to treat high blood pressure. It works by reducing fluid volume and relaxing blood vessels.

  • Generic Name: Hydrochlorothiazide (12.5mg) + Olmesartan Medoxomil (20mg)
  • Manufacturer: Bayer Zydus Pharma Pvt Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 xirtam h tablet के बारे में (Hindi Summary)

उपयोग: यह दवा उच्च रक्तचाप (हाई ब्लड प्रेशर) के इलाज के लिए इस्तेमाल की जाती है। यह हाइड्रोक्लोरोथियाजाइड और ओल्मेसार्टन मेडोक्सोमिल का संयोजन है। यह शरीर से अतिरिक्त नमक और पानी को बाहर निकालने में मदद करती है और रक्त वाहिकाओं को आराम देती है, जिससे रक्तचाप कम होता है। यह दवा स्ट्रोक और दिल के दौरे के खतरे को कम करने में भी मदद करती है।

साइड इफेक्ट्स: आम दुष्प्रभावों में चक्कर आना, सिरदर्द, थकान और जी मिचलाना शामिल हैं। गंभीर दुष्प्रभाव दुर्लभ हैं लेकिन इनमें गंभीर एलर्जी, गुर्दे की समस्या, इलेक्ट्रोलाइट असंतुलन और बहुत कम रक्तचाप शामिल हो सकते हैं। यदि आपको मांसपेशियों में कमजोरी, भ्रम, पेशाब कम आना या सूजन हो तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा को डॉक्टर के निर्देशानुसार सही समय पर लें, आमतौर पर दिन में एक बार। बिना डॉक्टर की सलाह के इसे अचानक बंद न करें। शराब से बचें क्योंकि इससे चक्कर बढ़ सकते हैं। पर्याप्त पानी पिएं। नियमित रूप से रक्तचाप, गुर्दे की कार्यप्रणाली और इलेक्ट्रोलाइट्स की जांच कराएं। गर्भवती होने या गर्भधारण की योजना बनाने पर डॉक्टर को सूचित करें।

💡 Did You Know? India has the highest number of USFDA-compliant plants outside the USA.

💊 xirtam h tablet Uses & Benefits

[{"condition":"Hypertension","description":"This medicine is used to lower high blood pressure in adults, reducing the risk of stroke, heart attack, and kidney problems.","evidence":"Well-established"}]

Off-label uses: []

Primary treatment for: Hypertension

Also treats: Heart failure, Diabetic nephropathy

📋 Drug Information

Generic Name(s)Hydrochlorothiazide (12.5mg) + Olmesartan Medoxomil (20mg)
Brand Namexirtam h tablet
ManufacturerBayer Zydus Pharma Pvt Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassCARDIAC
Action Class
Route of AdministrationOral
StorageStore at room temperature (15-30°C) in a dry place, away from direct sunlight.
Shelf Life24 months from the date of manufacture.
WHO GuidelineNot established from the available information.
ICMR GuidelineNot established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Take this medicine at the same time each day to maintain consistent blood pressure control.
2
Monitor your blood pressure regularly and keep a log to share with your doctor.
3
Stay hydrated, especially during hot weather or exercise, to prevent dehydration.
4
Avoid potassium supplements unless specifically prescribed by your doctor.
5
Report any muscle cramps, weakness, or irregular heartbeat immediately.
6
Do not stop this medicine abruptly without consulting your doctor.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
High blood pressure
This medicine is commonly prescribed for this.
Likely Use
❌
Swelling in legs
This medicine is not a primary treatment for edema.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionHydrochlorothiazide is absorbed from the gastrointestinal tract, with bioavailability of about 65-75%. Olmesartan medoxomil is rapidly absorbed and hydrolyzed to olmesartan, with absolute bioavailability of about 26%.
DistributionHydrochlorothiazide distributes into extracellular fluid and is not significantly bound to plasma proteins. Olmesartan is highly bound to plasma proteins (99%).
Protein BindingHydrochlorothiazide: about 40-68%; Olmesartan: about 99%.
MetabolismHydrochlorothiazide is not metabolized. Olmesartan medoxomil is hydrolyzed to olmesartan during absorption and is not further metabolized.
Half-LifeHydrochlorothiazide: 5.6-14.8 hours; Olmesartan: 10-15 hours.
ExcretionHydrochlorothiazide is excreted unchanged in urine (about 95%). Olmesartan is excreted in urine (about 35-50%) and feces (about 50-65%) via bile.
BioavailabilityHydrochlorothiazide: 65-75%; Olmesartan: 26%.
Onset of ActionBlood pressure reduction begins within 1-2 weeks, with maximum effect in about 4 weeks.
Peak Plasma TimeHydrochlorothiazide: 1-2 hours; Olmesartan: 1-2 hours.
Duration of Action24 hours, allowing once-daily dosing.

How It Works

This medicine combines two antihypertensive agents with complementary mechanisms. Hydrochlorothiazide inhibits the sodium-chloride symporter in the distal convoluted tubule of the kidney, increasing excretion of sodium, chloride, and water, which reduces plasma volume and cardiac output. Olmesartan medoxomil is a prodrug that is hydrolyzed to olmesartan, which selectively blocks angiotensin II type 1 (AT1) receptors, preventing angiotensin II-mediated vasoconstriction and aldosterone secretion. Together, they lower blood pressure more effectively than either agent alone.

Mechanism Steps

1
Hydrochlorothiazide inhibits sodium reabsorption: Hydrochlorothiazide blocks the sodium-chloride symporter in the distal convoluted tubule, increasing excretion of sodium, chloride, and water.
2
Reduced plasma volume: The increased urine output lowers plasma volume, which decreases venous return and cardiac output, contributing to blood pressure reduction.
3
Olmesartan blocks AT1 receptors: Olmesartan medoxomil is converted to olmesartan, which selectively binds to AT1 receptors, preventing angiotensin II from causing vasoconstriction and aldosterone release.
4
Additive antihypertensive effect: The combined actions of volume reduction and vasodilation lead to a greater decrease in blood pressure than either agent alone.

💡 How to Take xirtam h tablet

Strength: Tablet containing 12.5 mg hydrochlorothiazide and 20 mg olmesartan medoxomil.

1Take one tablet by mouth once daily, with or without food.
2Swallow the tablet whole with a glass of water.
3Take it at the same time each day to maintain consistent levels.
4Do not crush or chew the tablet.
5If you miss a dose, follow the missed dose instructions.

Dosage Information

Adult DosageThe usual adult dose is one tablet once daily, with or without food. The dose may be adjusted by your doctor based on your blood pressure response and tolerability. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician.
Elderly DosageElderly patients may be more sensitive to the effects of this medicine. Start with a lower dose and monitor closely for dizziness and electrolyte imbalances.
Renal ImpairmentUse with caution in patients with kidney impairment. Dose adjustment may be needed. Not recommended if eGFR <30 mL/min.
Hepatic ImpairmentUse with caution in patients with mild to moderate liver impairment. Not recommended in severe liver disease.
Maximum Daily DoseOne tablet daily (12.5 mg hydrochlorothiazide + 20 mg olmesartan medoxomil).

Dosage Timeline

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

🍽️ Food Timing Guide

With or without food
Take at the same time daily
Consistency helps maintain blood levels.
High-sodium foods
Limit intake
Sodium can reduce the effectiveness of this medicine.

⏰ What to Do If You Miss a Dose

📌 Less than 12 hours have passed since the missed dose
→ Take the missed dose as soon as you remember.
💡 Continue with the regular schedule.
📌 More than 12 hours have passed since the missed dose
→ Skip the missed dose.
💡 Do not double dose to catch up.

⚠️ Side Effects of xirtam h tablet

✅ Common Side Effects

Dizziness (Common (up to 10%))
Rise slowly from sitting or lying positions. Avoid driving if dizzy.
Headache (Common (up to 10%))
Usually resolves. Consult doctor if persistent or severe.
Fatigue (Common (up to 10%))
Ensure adequate rest. Report if it interferes with daily activities.
Nausea (Common (up to 10%))
Take with food. Consult doctor if vomiting occurs.

🚨 Serious Side Effects

Severe hypotension (Rare (<0.1%))
Seek immediate medical attention if you experience fainting or severe dizziness.
Acute kidney injury (Rare (<0.1%))
Report decreased urine output, swelling, or confusion immediately.
Electrolyte imbalance (Uncommon (0.1-1%))
Get regular blood tests. Report muscle cramps, weakness, or irregular heartbeat.
Severe allergic reaction (Rare (<0.1%))
Seek emergency care for facial swelling, difficulty breathing, or rash.

⚠️ Rare Side Effects

Pancreatitis
Seek immediate care for severe abdominal pain.
Severe skin reactions
Stop and seek emergency care for blistering or peeling skin.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Lithium Major
NSAIDs Major
Potassium-sparing diuretics Major
Corticosteroids Moderate
Digoxin Moderate

🚨 Major Interactions

  • Lithium
  • Potassium-sparing diuretics
  • NSAIDs

⚡ Moderate Interactions

  • Corticosteroids
  • Digoxin

🍷 Alcohol Interaction

Alcohol may enhance the blood pressure-lowering effect and increase dizziness. Avoid or limit alcohol consumption.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Pregnancy","Anuria","Hypersensitivity to hydrochlorothiazide, olmesartan, or sulfonamide-derived drugs","Severe liver disease","Severe kidney disease (eGFR

⚠️ Warnings & Precautions

["May cause dizziness; avoid driving until you know how it affects you.","Monitor for signs of electrolyte imbalance.","Avoid potassium supplements without medical advice.","Use with caution in patients with gout or lupus.","May worsen kidney function in dehydrated patients."]

🤱 Lactation Safety

Hydrochlorothiazide passes into breast milk and may affect milk production. Olmesartan is present in breast milk. Consult your doctor before breastfeeding.

💊 Overdose Management

Overdose may cause severe hypotension, electrolyte imbalances, and dehydration. Seek emergency medical attention. Treatment is supportive and symptomatic.

⏰ Missed Dose

If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose.

Additional Safety Advice

General Safety

Take this medicine exactly as prescribed, usually once daily with or without food. Do not stop suddenly without consulting your doctor. Avoid alcohol as it can worsen dizziness. Stay hydrated, especially in hot weather or during exercise. Regular monitoring of blood pressure, kidney function, and electrolytes is essential. Inform your doctor if you become pregnant or plan to become pregnant. Do not use potassium supplements without medical advice.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more sensitive to the blood pressure-lowering effects and electrolyte imbalances. Start with a lower dose and monitor closely.

🤰 Pregnancy Planning (TTC)

This medicine is contraindicated during pregnancy. If you are planning pregnancy, consult your doctor to switch to a safer alternative before conception.

🏥 Post-Surgery Considerations

Inform your surgeon and anesthesiologist about this medicine before surgery. It may need to be temporarily stopped to prevent blood pressure fluctuations during surgery.

🦷 Dental Procedures

Inform your dentist about this medicine. It may cause dry mouth or dizziness during dental procedures. Maintain good oral hygiene.

💚 Lifestyle Tips for Better Results

🏃
Maintain a healthy weight to help control blood pressure.
🥗
Engage in regular physical activity like walking or swimming.
😴
Reduce salt intake to enhance the medicine's effect.
💧
Limit alcohol and avoid smoking.
🧘
Manage stress through relaxation techniques.
🌞
Get adequate sleep.

🏋️ Exercise Considerations

Exercise is beneficial but avoid strenuous activity in hot weather to prevent dehydration and dizziness. Stay hydrated and rise slowly from sitting or lying positions.

🥗 Diet Recommendations

Follow a low-sodium diet.
Include potassium-rich foods like bananas and oranges if approved by your doctor.
Limit processed foods and added sugars.
Stay well hydrated.

💼 Impact on Daily Work & Life

This medicine may cause dizziness, especially when starting treatment. Avoid driving or operating heavy machinery until you know how it affects you. Most people can continue their daily activities with caution.

🛑 When to Stop This Medicine

Do not stop this medicine without consulting your doctor. If you experience severe side effects, contact your doctor immediately. Your doctor may adjust the dose or switch to another medicine.

📅 Long-Term Use Effects

Long-term use may require regular monitoring of kidney function, electrolytes, and blood pressure. Electrolyte imbalances and kidney problems can occur. Periodic blood tests are recommended. Do not stop the medicine without consulting your doctor.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Lifestyle modifications

Diet, exercise, and weight loss can help lower blood pressure and complement medicine.

Evidence: Well-established
Other antihypertensive classes

ACE inhibitors, calcium channel blockers, or beta-blockers may be alternatives.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

No specific vaccine interactions are established. However, consult your doctor before any vaccination.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate

✅ DO

Keep in original container

❌ DON'T

Do not transfer to unmarked containers

✅ DO

Keep away from direct sunlight

❌ DON'T

Do not store in bathroom cabinet

✈️ Traveling with This Medicine

Carry this medicine in its original packaging with a copy of your prescription. Store at room temperature and protect from moisture. If traveling across time zones, consult your doctor about adjusting the dosing schedule. Keep enough supply for the entire trip and carry it in your hand luggage.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 55-year-old man with a history of hypertension
He was prescribed this medicine after his blood pressure remained high on a single drug. Within a month, his blood pressure stabilized. He experienced mild dizziness initially but it resolved. He now walks daily and monitors his salt intake.
💡 Lesson: Combination therapy can effectively control blood pressure when a single drug is insufficient. Lifestyle changes enhance the effect.
👤 A 62-year-old woman with diabetes and hypertension
She started this medicine and noticed improved blood pressure readings. She had to adjust her diabetes medication slightly due to better blood sugar control. She emphasizes the importance of regular check-ups.
💡 Lesson: This medicine can affect blood sugar; monitoring and dose adjustments may be needed in diabetic patients.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine starts lowering blood pressure within 1-2 weeks, with maximum effect in about 4 weeks.

Q: Can I take this medicine with food?

A: Yes, it can be taken with or without food. Taking it at the same time daily is important.

Q: What should I do if I miss a dose?

A: If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine long-term?
  • Will it affect my kidney function?
  • Can I drive after taking this medicine?
  • Does it interact with my diabetes medicine?
  • What if I miss a dose?
  • Can I drink alcohol while taking this?

🔄 Substitutes for xirtam h tablet

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: This medicine can be stopped once blood pressure is normal.
    Fact: High blood pressure often requires long-term treatment. Do not stop without consulting your doctor.
  • Myth: This medicine causes kidney damage in everyone.
    Fact: Kidney problems are rare and usually occur in patients with pre-existing kidney disease or those taking certain other medicines.

🔄 Alternative Options

Generic Alternatives

  • Hydrochlorothiazide + Olmesartan Medoxomil

📊 Comparison with Similar Medicines

[{"medicine":"This medicine","composition":"Hydrochlorothiazide 12.5 mg + Olmesartan 20 mg","frequency":"Once daily","notes":"Combination for hypertension."},{"medicine":"Losartan + Hydrochlorothiazide","composition":"Losartan 50 mg + Hydrochlorothiazide 12.5 mg","frequency":"Once daily","notes":"Alternative ARB combination."}]

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