adenoject 3mg injection - Adenosine (3mg) medicine

Adenosine 3mg Injection: Complete Medicine Guide

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🏭 Sun Pharmaceutical Industries Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Oct 16, 2026
📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for approved indications.
Reviewed by
SaathiMed Expert Panel | Oct 16, 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 chest pain or pressure that does not go away
  • Difficulty breathing or severe shortness of breath
  • Fainting or loss of consciousness
  • Severe dizziness or lightheadedness
  • Heart rate that becomes very slow or irregular
  • Swelling of the face, lips, or throat
  • Signs of a severe allergic reaction such as rash, itching, or hives

If experiencing severe symptoms, call emergency services immediately.

What is adenoject 3mg injection used for?

Adenosine 3 mg injection is a rapid intravenous medicine used to treat and diagnose certain fast heart rhythms such as paroxysmal supraventricular tachycardia. It works within seconds and its effects last only about 10 to 20 seconds. It must be given by a healthcare professional in a monitored setting.

  • Generic Name: Adenosine (3mg)
  • Manufacturer: Sun Pharmaceutical Industries Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 adenoject 3mg injection के बारे में (Hindi Summary)

उपयोग: यह दवा एडेनोसिन 3 मिलीग्राम इंजेक्शन के रूप में उपलब्ध है और इसे डॉक्टर द्वारा नस में तेजी से दिया जाता है। इसका मुख्य उपयोग दिल की तेज धड़कन (सुप्रावेंट्रिकुलर टैचीकार्डिया) को सामान्य करने और दिल की जांच के दौरान रक्त प्रवाह का आकलन करने के लिए किया जाता है। यह दवा बहुत जल्दी असर करती है और इसका असर कुछ ही सेकंड तक रहता है। इसे केवल अस्पताल या क्लिनिक में, जहाँ दिल की धड़कन और ब्लड प्रेशर की निगरानी की जा सके, प्रशिक्षित स्वास्थ्यकर्मी द्वारा ही दिया जाना चाहिए।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में चेहरे पर गर्मी लगना, सीने में दबाव या बेचैनी, सांस फूलना, सिरदर्द, जी मिचलाना और मुँह में धातु जैसा स्वाद शामिल हैं। ये प्रभाव आमतौर पर कुछ सेकंड से लेकर एक-दो मिनट में अपने आप ठीक हो जाते हैं। कभी-कभी दिल की धड़कन अस्थायी रूप से रुक सकती है, ब्लड प्रेशर कम हो सकता है या सांस की नली में ऐंठन हो सकती है। इसलिए यह दवा केवल निगरानी वाले मेडिकल सेटिंग में ही दी जाती है।

सुरक्षा सलाह: यह दवा केवल अस्पताल या क्लिनिक में प्रशिक्षित डॉक्टर या स्वास्थ्यकर्मी द्वारा ही दी जानी चाहिए। इसे घर पर स्वयं न लें। इससे पहले कि आपको यह दवा दी जाए, अपने डॉक्टर को अपनी सभी बीमारियों, खासकर दमा, दिल की धड़कन की समस्या, निम्न रक्तचाप और दौरे की जानकारी दें। साथ ही, आप जो भी दवाइयाँ ले रहे हैं, उनकी सूची भी बताएं। यदि आप गर्भवती हैं या स्तनपान करा रही हैं, तो डॉक्टर से सलाह लें। इंजेक्शन के बाद यदि सीने में दर्द, सांस लेने में कठिनाई, चक्कर या बेहोशी महसूस हो, तो तुरंत मेडिकल स्टाफ को बताएं।

💡 Did You Know? The first generic medicine was introduced in India in 1970 after the Patents Act was amended.

💊 adenoject 3mg injection Uses & Benefits

[{"condition":"Paroxysmal supraventricular tachycardia (PSVT)","description":"This medicine is used as a rapid intravenous bolus to convert PSVT to normal sinus rhythm by temporarily blocking conduction through the atrioventricular node.","evidence":"Well-established"},{"condition":"Diagnostic aid in narrow-complex tachycardia","description":"It helps distinguish supraventricular tachycardia from ventricular tachycardia when the diagnosis is unclear on the ECG.","evidence":"Well-established"},{"condition":"Pharmacologic stress testing for coronary artery disease","description":"It is used during myocardial perfusion imaging in patients who cannot exercise adequately, by causing controlled coronary vasodilation.","evidence":"Well-established"}]

Off-label uses: [{"condition":"Adjunct in certain electrophysiology studies","description":"Occasionally used during electrophysiology testing to assess conduction properties, under specialist supervision.","evidence":"Limited"}]

Primary treatment for: Paroxysmal supraventricular tachycardia

Also treats: Coronary artery disease (for stress testing), Narrow-complex tachycardia (diagnostic aid)

📋 Drug Information

Generic Name(s)Adenosine (3mg)
Brand Nameadenoject 3mg injection
ManufacturerSun Pharmaceutical Industries Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassCARDIAC
Action ClassMiscellaneous agents- anti arrhythmic
Route of AdministrationParenteral (intravenous bolus)
StorageStore at room temperature between 15°C and 30°C. Protect from light and do not freeze.
Shelf LifeRefer to the product label for the exact shelf life. Do not use after the expiry date.
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
Administer this medicine only in a monitored setting with continuous ECG and blood pressure monitoring.
2
Ensure resuscitation equipment and trained personnel are immediately available before giving the injection.
3
Avoid caffeine and theophylline before the procedure because they can reduce the effectiveness of this medicine.
4
Use with caution in patients with asthma or COPD due to the risk of bronchospasm.
5
Consider reducing the dose or avoiding the medicine in patients taking dipyridamole.
6
Document the exact time and dose of each bolus and the patient's response.
7
Monitor for prolonged pauses or bradycardia after administration and be prepared to manage them.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
Rapid heartbeat (palpitations)
This medicine is used to treat certain fast heart rhythms.
Likely Use
✅
Chest pain during stress testing
This medicine is used during pharmacologic stress testing.
Likely Use
❌
Fever
This medicine is not used to treat fever.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionThis medicine is given directly into the bloodstream as an intravenous bolus, so absorption from the gastrointestinal tract does not apply.
DistributionAdenosine is distributed rapidly into the bloodstream and taken up by red blood cells and vascular endothelial cells. It does not cross the blood-brain barrier to a significant extent.
Protein BindingNot established from the available information.
MetabolismAdenosine is rapidly metabolized inside cells by adenosine deaminase and adenosine kinase to inosine and adenosine monophosphate, respectively. This metabolism occurs mainly in red blood cells and vascular endothelial cells.
Half-LifeThe elimination half-life is estimated to be less than 10 seconds in whole blood.
ExcretionThe metabolites of adenosine are further broken down and excreted mainly in the urine as uric acid and other purine breakdown products.
BioavailabilityBioavailability is not applicable because this medicine is administered directly into the bloodstream by intravenous injection.
Onset of ActionThe effect begins within seconds after an intravenous bolus injection.
Peak Plasma TimePeak plasma concentration occurs immediately after the intravenous bolus.
Duration of ActionThe effect lasts only about 10 to 20 seconds because the drug is cleared very rapidly from the blood.

How It Works

Adenosine acts on specific purine receptors, mainly A1 receptors in the heart, to activate potassium channels and reduce calcium entry into cardiac conduction cells. This slows conduction through the atrioventricular node and can interrupt re-entrant circuits that cause supraventricular tachycardia. It also dilates coronary blood vessels through A2A receptors, which is the basis for its use in stress testing.

Mechanism Steps

1
Binding to adenosine receptors: Adenosine binds to A1 receptors on cardiac conduction tissue and to A2A receptors on vascular smooth muscle.
2
Activation of potassium channels: A1 receptor activation opens potassium channels, which makes heart cells less excitable and slows electrical conduction.
3
Reduced calcium entry: The change in cell electrical state reduces calcium flow into the atrioventricular node, prolonging the time electrical signals take to pass through it.
4
Interruption of re-entrant circuit: The temporary block in the atrioventricular node breaks the abnormal electrical loop that sustains supraventricular tachycardia.
5
Coronary vasodilation: A2A receptor activation relaxes coronary arteries, increasing blood flow, which is useful during pharmacologic stress testing.

💡 How to Take adenoject 3mg injection

Strength: Adenosine 3 mg per mL injection, supplied as a 3 mg strength.

1This medicine is given by a healthcare professional as a rapid intravenous bolus.
2You will be connected to a heart monitor and blood pressure monitor before the injection.
3The injection is given over 1 to 2 seconds into a vein.
4Your heart rhythm and blood pressure will be watched closely for several minutes after the injection.
5Report any chest pain, difficulty breathing, or dizziness to the medical staff immediately.

Dosage Information

Adult DosageThe usual adult dose is 6 mg given as a rapid intravenous bolus over 1 to 2 seconds. If the abnormal heart rhythm does not resolve within 1 to 2 minutes, a 12 mg bolus may be given, and if needed, a second 12 mg bolus may be given. For stress testing, the dose is determined by the protocol and the patient's response. 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, especially low blood pressure and slow heart rate. Use with caution and monitor closely. Dose must be individualized by a qualified clinician.
Renal ImpairmentNo specific dose adjustment is established for kidney impairment, but use with caution and monitor closely. Dose must be individualized by a qualified clinician.
Hepatic ImpairmentNo specific dose adjustment is established for liver impairment, but use with caution and monitor closely. Dose must be individualized by a qualified clinician.
Maximum Daily DoseThe maximum total dose for a single diagnostic or therapeutic sequence is generally 18 mg to 24 mg, depending on the protocol. Dose must be individualized by a qualified clinician.

Dosage Timeline

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

🍽️ Food Timing Guide

Caffeine-containing foods and drinks
Avoid before the procedure
Caffeine blocks adenosine receptors and can reduce the medicine's effectiveness.

⏰ What to Do If You Miss a Dose

📌 You miss your scheduled appointment for this injection
→ Contact your healthcare provider as soon as possible to reschedule.
💡 Do not attempt to administer this medicine yourself.

⚠️ Side Effects of adenoject 3mg injection

✅ Common Side Effects

Flushing (Common (10-20%))
This usually resolves within a minute or two. Inform the medical staff if it feels severe.
Chest pressure or discomfort (Common (10-20%))
Report to the healthcare professional immediately so they can monitor your heart rhythm.
Shortness of breath (Common (10-20%))
This is usually brief. If it persists or worsens, seek immediate medical attention.
Headache (Common (5-10%))
Usually resolves quickly. Inform staff if it is severe or persistent.
Nausea (Common (5-10%))
Usually short-lived. Tell the medical staff if it continues.
Metallic taste (Common (5-10%))
This is harmless and goes away quickly.

🚨 Serious Side Effects

Prolonged heart pause or severe bradycardia (Uncommon (0.1-1%))
Requires immediate medical attention and monitoring; resuscitation equipment must be available.
Severe low blood pressure (Uncommon (0.1-1%))
Seek immediate medical attention; blood pressure support may be needed.
Bronchospasm (Rare (<0.1%))
Seek immediate medical attention, especially if you have asthma or lung disease.
Ventricular arrhythmias (Rare (<0.1%))
Requires immediate emergency treatment in a monitored setting.

⚠️ Rare Side Effects

Seizures
Seek immediate medical attention.
Severe allergic reaction (anaphylaxis)
Seek emergency medical help immediately.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Dipyridamole Major
Carbamazepine Major
Theophylline Major
Caffeine Major
Beta-blockers Moderate
Calcium channel blockers Moderate
Digoxin Moderate
Nicotine Minor

🚨 Major Interactions

  • Dipyridamole
  • Carbamazepine
  • Methylxanthines (e.g., theophylline, caffeine)

⚡ Moderate Interactions

  • Beta-blockers
  • Calcium channel blockers
  • Digoxin

🍷 Alcohol Interaction

Alcohol may increase the risk of low blood pressure and dizziness. It is best to avoid alcohol before receiving this medicine, especially since it is given in a monitored medical setting.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Second- or third-degree atrioventricular block (except in patients with a functioning artificial pacemaker)","Sick sinus syndrome (except in patients with a functioning artificial pacemaker)","Known hypersensitivity to adenosine","Severe asthma or severe bronchospasm","Severe low blood pressure"]

⚠️ Warnings & Precautions

["This medicine must be administered only by trained healthcare professionals in a monitored setting with resuscitation equipment immediately available.","Use with caution in patients with asthma or chronic obstructive pulmonary disease because it can cause bronchospasm.","Use with caution in patients with low blood pressure or heart failure.","Avoid in patients with heart block or sick sinus syndrome unless they have a working pacemaker.","Caffeine and theophylline can reduce the effectiveness of this medicine; avoid before the procedure.","Dipyridamole can greatly increase the effects of this medicine; avoid or adjust dose.","Inform your doctor if you are pregnant, planning pregnancy, or breastfeeding."]

🤱 Lactation Safety

Adenosine is present naturally in the body and is rapidly cleared, so it is unlikely to affect a breastfed infant. However, because this medicine is given in a monitored setting, discuss breastfeeding with your doctor before receiving it.

💊 Overdose Management

Because this medicine is given as a single rapid intravenous bolus under medical supervision, overdose is unlikely. If excessive effects occur, they are usually short-lived because the drug is cleared within seconds. Treatment is supportive and may include monitoring, oxygen, and if needed, use of adenosine receptor blockers such as theophylline or aminophylline under medical direction.

⏰ Missed Dose

This medicine is given as a single dose in a monitored medical setting, so a missed dose schedule does not apply. If you miss your appointment for the procedure, contact your healthcare provider to reschedule.

Additional Safety Advice

General Safety

This medicine must be administered only by a qualified healthcare professional in a hospital or clinic with continuous heart rhythm monitoring and immediate access to resuscitation equipment. Do not attempt to use this medicine at home or outside a monitored medical setting. Before receiving this medicine, tell your doctor about all your medical conditions, especially asthma, chronic obstructive pulmonary disease, heart block, sick sinus syndrome, low blood pressure, or a history of seizures. Also inform your doctor about all medicines you take, including caffeine-containing products, because caffeine can reduce the effect of this medicine. If you are pregnant, planning pregnancy, or breastfeeding, discuss the risks and benefits with your doctor before receiving this medicine. After the injection, report any chest pain, difficulty breathing, severe dizziness, or fainting to the medical staff immediately. Do not drive or operate machinery until you are fully alert and your doctor says it is safe.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more sensitive to the effects of this medicine, especially low blood pressure and slow heart rate. Use with caution and monitor closely. Dose must be individualized by a qualified clinician.

🤰 Pregnancy Planning (TTC)

If you are planning pregnancy, discuss with your doctor before receiving this medicine. Adenosine is generally considered acceptable when clinically needed, but the decision should be made by a doctor after weighing benefits and risks.

🏥 Post-Surgery Considerations

If you have recently had surgery, inform your doctor before receiving this medicine. Your doctor will assess whether it is safe for you based on your overall condition.

🦷 Dental Procedures

Inform your dentist if you have recently received this medicine or have a history of heart rhythm problems. Your dentist may take precautions or consult your cardiologist before proceeding.

💚 Lifestyle Tips for Better Results

🏃
Maintain a healthy weight to reduce strain on your heart.
🥗
Engage in regular physical activity as advised by your doctor.
😴
Avoid excessive caffeine if you have heart rhythm problems.
💧
Manage stress through relaxation techniques such as deep breathing or meditation.
🧘
Get adequate sleep to support heart health.
🌞
Follow a heart-healthy diet rich in fruits, vegetables, and whole grains.

🏋️ Exercise Considerations

After receiving this medicine, avoid strenuous exercise or heavy lifting for the rest of the day or until your doctor says it is safe. If you feel dizzy or tired, rest and inform your doctor.

🥗 Diet Recommendations

Eat a heart-healthy diet rich in fruits, vegetables, and whole grains.
Limit caffeine intake, especially before any procedure involving this medicine.
Reduce salt intake to help manage blood pressure.
Include lean proteins and healthy fats in your diet.

💼 Impact on Daily Work & Life

This medicine is given in a medical setting, so it does not affect your daily work routine directly. However, you should not drive or operate machinery immediately after receiving it until you are fully alert and cleared by your doctor. Plan to have someone drive you home after the procedure.

🛑 When to Stop This Medicine

This medicine is given as a single dose or short series in a monitored setting, so you do not need to stop it yourself. If you experience any severe side effects, the medical team will manage them. Always follow your doctor's advice regarding follow-up care.

📅 Long-Term Use Effects

This medicine is not used for long-term treatment. It is given as a single dose or a short series of doses in a monitored setting. There are no known long-term effects from a single administration. If you receive it as part of a stress test, your doctor will discuss the results and any needed follow-up.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Vagal maneuvers

Simple physical actions like bearing down or coughing can sometimes stop certain fast heart rhythms before medicine is needed.

Evidence: Well-established
Other antiarrhythmic medicines

Medicines such as verapamil or beta-blockers may be used in some cases, depending on the patient's condition.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

There are no known interactions between this medicine and vaccines. However, inform your doctor about any recent vaccinations before receiving this medicine.

📦 Storage Guide

✅ DO

Store at room temperature between 15°C and 30°C

❌ DON'T

Do not freeze

✅ DO

Protect from light

❌ DON'T

Do not expose to direct sunlight

✅ DO

Keep in the original container

❌ DON'T

Do not transfer to unmarked containers

✈️ Traveling with This Medicine

This medicine is given only in a hospital or clinic setting, so travel advice is limited. If you are traveling to receive this treatment, carry a copy of your prescription and medical records. Inform the airline and security about any medical devices or medications you carry. Since the medicine is administered by a healthcare professional, you do not need to carry it yourself. Always keep your doctor&#039;s contact information handy.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 52-year-old man with recurrent episodes of a racing heartbeat
He was brought to the emergency department with a heart rate of 180 beats per minute. The doctor gave him this medicine as a rapid intravenous injection. Within seconds, his heart rhythm returned to normal. He felt a brief flushing and chest pressure, but it passed quickly. He was later advised on lifestyle changes and follow-up with a cardiologist.
💡 Lesson: This medicine can rapidly convert certain fast heart rhythms to normal, but it must be given in a monitored setting because of its powerful and brief effects.
👤 A 65-year-old woman unable to exercise for a stress test
She needed a stress test to evaluate chest pain but could not walk on a treadmill due to knee arthritis. The doctor used this medicine during a pharmacologic stress test. She experienced mild flushing and a brief feeling of breathlessness, but the test was completed safely and provided useful information about her heart.
💡 Lesson: This medicine is a valuable alternative for patients who cannot exercise adequately during cardiac stress testing.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine starts working within seconds after the intravenous injection.

Q: How long do the effects last?

A: The effects last only about 10 to 20 seconds because the medicine is cleared very quickly from the blood.

Q: Can I receive this medicine if I have asthma?

A: It should be used with caution in people with asthma because it can cause bronchospasm. Inform your doctor if you have asthma.

Q: What should I avoid before receiving this medicine?

A: Avoid caffeine-containing foods and drinks before the procedure, as they can reduce the effectiveness of this medicine.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine at home?
  • How long does the effect last?
  • What if the first dose does not work?
  • Is it safe in pregnancy?
  • Does it interact with my heart medicines?
  • What are the serious side effects I should watch for?

🔄 Substitutes for adenoject 3mg injection

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: Adenosine injection can be self-administered at home.
    Fact: No, it must be given by a trained healthcare professional in a monitored setting with emergency equipment available.
  • Myth: Adenosine is a long-acting heart medicine.
    Fact: Adenosine is extremely short-acting; its effects last only seconds because it is rapidly cleared from the blood.
  • Myth: Adenosine is safe for everyone with a fast heartbeat.
    Fact: It is not safe for people with certain heart block conditions, severe asthma, or severe low blood pressure.

🔄 Alternative Options

Generic Alternatives

  • Adenosine injection

Brand Alternatives

  • Adenoject 3mg injection

📊 Comparison with Similar Medicines

[{"medicine":"Adenosine 3 mg injection","class":"Purine nucleoside","route":"Parenteral","main_use":"PSVT, stress testing"},{"medicine":"Adenosine 6 mg injection","class":"Purine nucleoside","route":"Parenteral","main_use":"PSVT, stress testing"}]

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