assurans tablet - Sildenafil (20mg) medicine

Assurans Tablet (Sildenafil 20mg): Complete Medicine Guide

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🏭 Cipla Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 20, 2026
📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for PAH.
Reviewed by
SaathiMed Expert Panel | Sep 20, 2026

When to Call Your Doctor IMMEDIATELY

  • Sudden vision loss in one or both eyes
  • Sudden hearing loss or ringing in the ears
  • Chest pain or difficulty breathing
  • Prolonged erection lasting more than 4 hours
  • Severe dizziness or fainting
  • Signs of an allergic reaction such as rash, itching, swelling of face or throat

If experiencing severe symptoms, call emergency services immediately.

What is assurans tablet used for?

This medicine contains sildenafil 20 mg, a PDE5 inhibitor used to treat pulmonary arterial hypertension (PAH) in adults. It works by relaxing blood vessels in the lungs to improve blood flow and exercise capacity. It is taken orally three times daily.

  • Generic Name: Sildenafil
  • Manufacturer: Cipla Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 assurans tablet के बारे में (Hindi Summary)

उपयोग: यह दवा सिल्डेनाफिल 20 मिलीग्राम युक्त एक प्रिस्क्रिप्शन टैबलेट है, जिसका उपयोग फुफ्फुसीय धमनी उच्च रक्तचाप (PAH) के इलाज के लिए किया जाता है। यह फेफड़ों की रक्त वाहिकाओं को आराम देकर रक्त प्रवाह में सुधार करती है और व्यायाम क्षमता बढ़ाती है। इसे दिन में तीन बार लिया जाता है।

साइड इफेक्ट्स: सामान्य दुष्प्रभावों में सिरदर्द, चेहरे पर लालिमा, अपच, नाक बंद होना और चक्कर आना शामिल हैं। गंभीर दुष्प्रभावों में निम्न रक्तचाप, बेहोशी और दृष्टि परिवर्तन शामिल हो सकते हैं। यदि अचानक दृष्टि हानि, सीने में दर्द या लंबे समय तक इरेक्शन हो तो तुरंत चिकित्सा सहायता लें।

सुरक्षा सलाह: इस दवा को अपने डॉक्टर के निर्देशानुसार ही लें। नाइट्रेट्स या रियोसिगुआट के साथ इसका सेवन न करें। अपने डॉक्टर को अन्य सभी दवाओं के बारे में बताएं। शराब से बचें क्योंकि इससे निम्न रक्तचाप का खतरा बढ़ सकता है। इसे कमरे के तापमान पर सूखी जगह पर रखें।

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

💊 assurans tablet Uses & Benefits

[{"condition":"Pulmonary Arterial Hypertension (PAH)","description":"This medicine is indicated to improve exercise ability and delay clinical worsening in adults with PAH (WHO Group I).","evidence":"Well-established"}]

Off-label uses: [{"condition":"Raynaud's phenomenon","description":"Sometimes prescribed off-label to improve blood flow in fingers and toes.","evidence":"Limited"},{"condition":"High-altitude pulmonary edema prevention","description":"May be used off-label to prevent fluid accumulation in lungs at high altitudes.","evidence":"Limited"}]

Primary treatment for: Pulmonary Arterial Hypertension (PAH)

Also treats: Raynaud's phenomenon, High-altitude pulmonary edema

📋 Drug Information

Generic Name(s)Sildenafil
Brand NameAssurans Tablet
ManufacturerCipla Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassSEX STIMULANTS REJUVENATORS
Action ClassPhosphodiesterase-V inhibitors
Route of AdministrationOral
StorageStore at room temperature (15-30°C) away from moisture and heat. Keep in original container.
Shelf Life24 months from 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 times each day, approximately 4 to 6 hours apart.
2
Avoid high-fat meals as they can delay absorption and reduce effectiveness.
3
Do not take this medicine with nitrates or riociguat due to the risk of severe hypotension.
4
Inform your doctor if you experience any vision or hearing changes.
5
Use caution when driving or operating machinery until you know how this medicine affects you.
6
Keep all follow-up appointments to monitor your blood pressure and heart function.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

Shortness of breath on exertion
This medicine is commonly prescribed for pulmonary arterial hypertension.
Likely Use
Chest pain
This medicine is not a primary treatment for chest pain; seek immediate medical attention.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionThis medicine is rapidly absorbed after oral administration, with a mean absolute bioavailability of about 40%. Food may delay absorption.
DistributionThis medicine is distributed widely in the body, with a volume of distribution of about 105 liters. It is approximately 96% bound to plasma proteins.
Protein BindingApproximately 96% bound to plasma proteins.
MetabolismThis medicine is metabolized primarily by the CYP3A4 and CYP2C9 enzymes in the liver. Its major metabolite is N-desmethyl sildenafil, which has about 50% of the potency of sildenafil.
Half-LifeThe elimination half-life is approximately 4 hours.
ExcretionThis medicine is excreted mainly in the feces (about 80%) and urine (about 13%) as metabolites.
BioavailabilityAbout 40% (absolute bioavailability).
Onset of ActionOnset of action is within 30 to 60 minutes after oral administration.
Peak Plasma TimePeak plasma concentration is reached within 30 to 120 minutes (1 to 2 hours) in fasting state.
Duration of ActionDuration of action is approximately 4 to 6 hours.

How It Works

This medicine inhibits phosphodiesterase type 5 (PDE5), the enzyme responsible for breaking down cyclic guanosine monophosphate (cGMP) in the smooth muscle cells of the pulmonary vasculature. By inhibiting PDE5, it increases cGMP levels, leading to relaxation of smooth muscle and vasodilation. This results in reduced pulmonary arterial pressure and improved blood flow.

Mechanism Steps

1
Inhibition of PDE5: This medicine selectively inhibits the enzyme PDE5, which is found in high concentrations in the lungs and corpus cavernosum.
2
Increased cGMP: Inhibition of PDE5 prevents the breakdown of cGMP, leading to higher levels of cGMP in smooth muscle cells.
3
Smooth muscle relaxation: Elevated cGMP activates protein kinase G, which leads to relaxation of smooth muscle cells in the pulmonary arteries.
4
Vasodilation: Relaxation of smooth muscle causes dilation of pulmonary blood vessels, reducing pulmonary vascular resistance and pressure.

💡 How to Take assurans tablet

Strength: 20 mg immediate-release tablet.

1Take this medicine orally with a glass of water.
2Swallow the tablet whole. Do not crush or chew.
3Take with or without food, but avoid high-fat meals.
4Take at the same times each day to maintain consistent levels.
5If you miss a dose, follow the missed dose instructions.

Dosage Information

Adult DosageThe recommended dose for pulmonary arterial hypertension is 20 mg taken three times daily, approximately 4 to 6 hours apart. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. Do not exceed the prescribed dose.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician.
Elderly DosageNo specific dose adjustment is required for elderly patients, but use with caution due to potential for increased sensitivity.
Renal ImpairmentNo dose adjustment is required for mild to moderate renal impairment. In severe renal impairment (creatinine clearance <30 mL/min), use with caution and consider dose reduction.
Hepatic ImpairmentNo dose adjustment is required for mild to moderate hepatic impairment. In severe hepatic impairment (Child-Pugh C), the dose should not exceed 20 mg once daily.
Maximum Daily Dose60 mg per day (20 mg three times daily).

Dosage Timeline

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

🍽️ Food Timing Guide

With food
Take with or without food
Food does not significantly affect absorption, but high-fat meals may delay it.
Grapefruit
Avoid
May increase drug levels by inhibiting CYP3A4.

⏰ What to Do If You Miss a Dose

📌 Less than half the dosing interval has passed
→ Take the missed dose as soon as you remember.
💡 Continue with the regular schedule.
📌 More than half the dosing interval has passed
→ Skip the missed dose.
💡 Do not double dose to catch up.

⚠️ Side Effects of assurans tablet

✅ Common Side Effects

Headache (Common (10-20%))
Usually resolves on its own. Consult doctor if persistent or severe.
Flushing (Common (10-15%))
Usually transient. Stay hydrated and avoid alcohol.
Dyspepsia (Common (5-10%))
Take with food to reduce stomach upset. Consult doctor if severe.
Nasal congestion (Common (5-10%))
Use saline nasal spray if needed. Consult doctor if persistent.
Dizziness (Common (5-10%))
Avoid driving or operating machinery until you know how it affects you.

🚨 Serious Side Effects

Hypotension (Uncommon (1-2%))
Seek immediate medical attention if you feel faint, dizzy, or have blurred vision.
Syncope (Rare (<1%))
Lie down and elevate legs if feeling faint. Seek medical help if it occurs.
Non-arteritic anterior ischemic optic neuropathy (NAION) (Very rare (<0.1%))
Seek immediate medical attention if you experience sudden vision loss in one or both eyes.
Prolonged erection (priapism) (Very rare (<0.1%))
Seek immediate medical attention if erection lasts more than 4 hours.

⚠️ Rare Side Effects

Seizures
Seek immediate medical attention.
Sudden hearing loss
Discontinue and seek medical attention immediately.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Nitrates Major
Riociguat Major
Alpha-blockers Major
CYP3A4 inhibitors Moderate
CYP3A4 inducers Moderate
Antihypertensives Moderate
Grapefruit juice Minor

🚨 Major Interactions

  • Nitrates (e.g., nitroglycerin, isosorbide mononitrate)
  • Riociguat
  • Alpha-blockers (e.g., doxazosin, terazosin)

⚡ Moderate Interactions

  • CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, ritonavir)
  • CYP3A4 inducers (e.g., rifampin, carbamazepine)
  • Antihypertensives

🍷 Alcohol Interaction

Alcohol may increase the risk of hypotension and dizziness. Avoid or limit alcohol consumption while taking this medicine.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Concomitant use of nitrates","Concomitant use of riociguat","Hypersensitivity to sildenafil or any component","Recent stroke or myocardial infarction","Severe hypotension"]

⚠️ Warnings & Precautions

["Cardiovascular risk: Assess cardiovascular status before initiating therapy.","Priapism: Prolonged erections may occur. Seek immediate medical attention if erection lasts >4 hours.","NAION: Sudden vision loss has been reported. Discontinue and seek medical attention.","Hearing loss: Sudden decrease or loss of hearing has been reported.","Hypotension: Use with caution in patients with low blood pressure or on antihypertensives.","Hepatic impairment: Dose adjustment may be needed in severe hepatic impairment.","Renal impairment: Dose adjustment may be needed in severe renal impairment."]

🤱 Lactation Safety

Not established from the available information. This medicine is not indicated for use in breastfeeding women.

💊 Overdose Management

In case of overdose, seek immediate medical attention. Treatment should be supportive and symptomatic. Hemodialysis is not expected to be effective due to high protein binding.

⏰ 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 dose.

Additional Safety Advice

General Safety

Take this medicine exactly as prescribed by your doctor. Do not change the dose or stop taking it without consulting your doctor. Avoid taking nitrates or riociguat while on this medicine. Inform your doctor about all other medicines you are taking, especially alpha-blockers, antihypertensives, and CYP3A4 inhibitors. Use caution when driving or operating machinery until you know how this medicine affects you. Avoid drinking alcohol as it may increase the risk of low blood pressure. Store at room temperature away from moisture and heat. Keep out of reach of children.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more sensitive to the blood pressure-lowering effects of this medicine. Use with caution and monitor blood pressure regularly.

🤰 Pregnancy Planning (TTC)

This medicine is not indicated for use in women, including during pregnancy planning. Consult your doctor for alternative treatments if you are pregnant or planning to become pregnant.

🏥 Post-Surgery Considerations

Inform your surgeon and anesthesiologist that you are taking this medicine. It may interact with medications used during surgery and affect blood pressure.

🦷 Dental Procedures

Inform your dentist that you are taking this medicine, especially if you are undergoing procedures that may cause bleeding or require anesthesia.

💚 Lifestyle Tips for Better Results

🏃
Maintain a healthy weight to reduce strain on your heart and lungs.
🥗
Engage in regular low-impact exercise such as walking or swimming, as tolerated.
😴
Avoid smoking and limit alcohol consumption.
💧
Practice relaxation techniques to manage stress.
🧘
Get adequate sleep to support overall health.
🌞
Follow a balanced diet rich in fruits, vegetables, and whole grains.

🏋️ Exercise Considerations

Avoid strenuous exercise until you know how this medicine affects you. Start slowly and gradually increase activity as tolerated. Consult your doctor before starting any new exercise program.

🥗 Diet Recommendations

Include omega-3 rich foods like fish and flaxseeds.
Reduce processed food intake.
Stay well hydrated.
Limit high-fat meals as they may delay absorption.

💼 Impact on Daily Work & Life

This medicine may cause dizziness or hypotension, which can affect your ability to drive or operate machinery. Use caution until you know how it affects you. Most people can continue their normal activities with appropriate precautions.

🛑 When to Stop This Medicine

Do not stop taking this medicine without consulting your doctor. If you experience serious side effects such as vision loss or prolonged erection, seek immediate medical attention and follow your doctor's advice.

📅 Long-Term Use Effects

Long-term use of this medicine is generally well-tolerated. Regular monitoring of blood pressure, vision, and hearing is advised. Some patients may develop tolerance, but this is uncommon. Do not stop taking this medicine without consulting your doctor.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Tadalafil

Another PDE5 inhibitor with a longer duration of action, taken once daily.

Evidence: Well-established
Endothelin receptor antagonists (e.g., bosentan)

Alternative class for PAH, often used in combination.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

No specific vaccine interactions are known. However, consult your doctor before receiving any live vaccines while on this medicine.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate unless specified

✅ 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. When crossing time zones, adjust dosing times gradually in consultation with your doctor. Check local customs regulations for carrying prescription medicines.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 52-year-old man with pulmonary arterial hypertension
Started this medicine as prescribed. After a few weeks, he noticed he could walk longer distances without getting breathless. He learned to take it regularly and avoid high-fat meals.
💡 Lesson: Consistent dosing and dietary adjustments can significantly improve outcomes.
👤 A 45-year-old woman with PAH associated with connective tissue disease
She was initially hesitant about taking a 'male' drug. Her doctor explained that this medicine is approved for PAH in both men and women. She started treatment and experienced improved exercise tolerance.
💡 Lesson: This medicine is effective for PAH regardless of gender; open communication with your doctor helps overcome misconceptions.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine starts working within 30 to 60 minutes, but its full benefits for pulmonary arterial hypertension may take several weeks to become noticeable.

Q: Can I take this medicine with nitrates?

A: No, taking this medicine with nitrates can cause a severe drop in blood pressure. It is contraindicated.

Q: Is this medicine safe for long-term use?

A: Yes, it is generally safe for long-term use under medical supervision. Regular monitoring of blood pressure and vision is recommended.

🤔 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 blood pressure medicine?
  • What if I miss a dose?
  • Can I drink alcohol while taking this?

🔄 Substitutes for assurans 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 is only for erectile dysfunction.
    Fact: This medicine is also approved for pulmonary arterial hypertension at a lower dose.
  • Myth: This medicine can be taken with nitrates.
    Fact: Combining with nitrates can cause severe hypotension and is contraindicated.

🔄 Alternative Options

Generic Alternatives

  • Sildenafil 20 mg tablet

Brand Alternatives

  • Revatio
  • Viagra

📊 Comparison with Similar Medicines

[{"medicine":"Sildenafil","class":"PDE5 inhibitor","route":"Oral","frequency":"Three times daily","notes":"Short half-life"},{"medicine":"Tadalafil","class":"PDE5 inhibitor","route":"Oral","frequency":"Once daily","notes":"Longer half-life"}]

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