Rantac Injection 2ml: Complete Medicine Guide
When to Call Your Doctor IMMEDIATELY
- Swelling of the face, lips, or throat, or difficulty breathing
- A widespread rash, blistering, or peeling skin
- Severe dizziness, fainting, or a very slow heartbeat
- Confusion, hallucinations, or unusual agitation
- Yellowing of the eyes or skin, dark urine, or severe tiredness
- Severe upper abdominal pain spreading to the back
- Blood in vomit or black, tarry stools
- Reduced urine output or swelling of the legs
If experiencing severe symptoms, call emergency services immediately.
What is zinetac 25mg injection used for?
This medicine is an injectable H2 blocker used to reduce stomach acid quickly when oral medicines cannot be taken. It is given by a healthcare professional for conditions such as peptic ulcers, reflux, and prevention of acid aspiration during surgery.
- Generic Name: Ranitidine (25mg)
- Manufacturer: Glaxo SmithKline Pharmaceuticals Ltd
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
🇮🇳 zinetac 25mg injection के बारे में (Hindi Summary)
उपयोग: यह दवा रैनिटिडीन का इंजेक्शन है, जिसका उपयोग पेट में एसिड को कम करने के लिए किया जाता है। इसका इस्तेमाल आमतौर पर अस्पताल या क्लिनिक में तब किया जाता है जब मरीज मुँह से दवा नहीं ले सकता, जैसे उल्टी हो रही हो या बेहोशी की हालत हो। यह पेप्टिक अल्सर, गैस्ट्रो-ओसोफेगल रिफ्लक्स डिजीज, ज़ोलिंगर-एलिसन सिंड्रोम और ऑपरेशन से पहले एसिड के खतरे को कम करने के लिए दी जाती है। यह दवा एच2 रिसेप्टर को ब्लॉक करके पेट के एसिड का उत्पादन कम करती है। यह इंजेक्शन डॉक्टर या नर्स द्वारा ही लगाया जाता है, इसे घर पर खुद नहीं लगाना चाहिए।
साइड इफेक्ट्स: इस दवा के आम दुष्प्रभावों में सिरदर्द, चक्कर आना, नींद आना, कब्ज, दस्त, जी मिचलाना, उल्टी और इंजेक्शन लगाने की जगह पर दर्द या लालिमा शामिल हैं। कुछ मरीजों में लीवर एंजाइम थोड़ा बढ़ सकता है, जो आमतौर पर अस्थायी होता है। बुजुर्गों या किडनी की बीमारी वाले मरीजों में भ्रम, मतिभ्रम या धड़कन धीमी होने जैसी समस्याएँ कभी-कभी हो सकती हैं। बहुत कम मामलों में गंभीर एलर्जी, साँस लेने में तकलीफ, चेहरे या गले में सूजन हो सकती है, जिसके लिए तुरंत डॉक्टर से मिलना चाहिए।
सुरक्षा सलाह: यह दवा केवल डॉक्टर या नर्स द्वारा ही लगाई जानी चाहिए। इसे लगाने से पहले अपने डॉक्टर को बताएं कि आपको किसी दवा से एलर्जी है या नहीं, आपको किडनी या लीवर की बीमारी है या नहीं, और आप गर्भवती हैं या स्तनपान करा रही हैं या नहीं। इस दवा को लेने के बाद चक्कर या नींद आ सकती है, इसलिए तब तक गाड़ी न चलाएँ और मशीन न चलाएँ जब तक आप ठीक महसूस न करें। शराब न पिएँ, क्योंकि इससे पेट में जलन और नींद बढ़ सकती है। बिना डॉक्टर की सलाह के कोई अन्य दवा न लें। अपने सभी फॉलो-अप और जाँच समय पर कराएँ।
💊 zinetac 25mg injection Uses & Benefits
[{"condition":"Active peptic ulcer disease","description":"This medicine reduces gastric acid secretion, which helps relieve ulcer pain and promotes healing of duodenal and gastric ulcers when oral therapy is not possible.","evidence":"Well-established"},{"condition":"Gastro-oesophageal reflux disease (GORD)","description":"It decreases acid production and reduces reflux symptoms such as heartburn and acid regurgitation in patients who cannot take oral medicines.","evidence":"Well-established"},{"condition":"Zollinger-Ellison syndrome","description":"This medicine is used to control excessive acid secretion caused by gastrin-producing tumours, often as part of a treatment plan.","evidence":"Well-established"},{"condition":"Prevention of acid aspiration during surgery","description":"It is given before anaesthesia to reduce the volume and acidity of stomach contents, lowering the risk of lung injury if aspiration occurs.","evidence":"Well-established"},{"condition":"Heartburn and acid indigestion","description":"It provides rapid relief when oral therapy is not suitable, such as in patients who are vomiting or unable to swallow.","evidence":"Well-established"}]
Off-label uses: [{"condition":"Stress ulcer prophylaxis in critically ill patients","description":"Sometimes used in intensive care to prevent stress-related mucosal bleeding, although evidence for benefit in all patients is limited.","evidence":"Limited"},{"condition":"Anaphylaxis adjunct","description":"Rarely used as an add-on to adrenaline and antihistamines in some protocols, but this is not a standard or widely accepted practice.","evidence":"Limited"}]
Primary treatment for: Peptic ulcer disease and gastro-oesophageal reflux disease
Also treats: Zollinger-Ellison syndrome, Acid aspiration prophylaxis before surgery, Heartburn and acid indigestion
📋 Drug Information
| Generic Name(s) | Ranitidine (25mg) |
| Brand Name | zinetac 25mg injection |
| Manufacturer | Glaxo SmithKline Pharmaceuticals Ltd |
| Packaging / Form | Varies by brand (Allopathy) |
| Therapeutic Class | GASTRO INTESTINAL |
| Action Class | H2 Receptor Blocker |
| Route of Administration | Parenteral (intravenous or intramuscular injection) |
| Storage | Store this medicine below 30°C, protected from light. Do not freeze. Keep the vial or ampoule in its original carton until use. Once opened, use immediately and discard any unused solution. |
| Shelf Life | 24 months from the date of manufacture, or as printed on the pack. |
| WHO Guideline | Not established from the available information. |
| ICMR Guideline | Not established from the available information. |
👨⚕️ Doctor's Practical Tips
Evidence-based practical advice from experienced clinicians
🔍 Is This Medicine Right for Your Symptom?
Educational reference. Always consult a doctor for diagnosis.
🔬 How This Medicine Works (Pharmacology)
Pharmacokinetics
How It Works
This medicine works by competitively blocking histamine at the H2 receptors located on the basolateral membrane of gastric parietal cells. By preventing histamine from stimulating these receptors, it reduces the production of cyclic AMP inside the parietal cells, which in turn decreases the activity of the proton pump and lowers the secretion of gastric acid. This medicine is more effective at reducing basal acid secretion and nocturnal acid secretion than at reducing acid stimulated by food. It also reduces the volume of gastric juice and the concentration of hydrogen ions, which helps to relieve symptoms of acid-related disorders and allows ulcers to heal.
Mechanism Steps
💡 How to Take zinetac 25mg injection
Strength: Injection, 25 mg per ml, supplied in a 2 ml ampoule or vial.
Dosage Information
| Adult Dosage | The dose of this medicine must be individualized by a qualified clinician based on the indication, age, weight, kidney and liver function, and other medicines being taken. For active peptic ulcer or reflux, a common adult dose is 50 mg given by intramuscular or slow intravenous injection every 6 to 8 hours. For prevention of acid aspiration before surgery, a common dose is 50 mg given intramuscularly or by slow intravenous injection 45 to 60 minutes before anaesthesia. In patients with kidney impairment, the dose is usually reduced, often to 25 mg, and the interval between doses is lengthened. This medicine should be injected slowly over at least 2 minutes to reduce the risk of low blood pressure and slow heart rate. Do not change the dose without medical advice. |
| Pediatric Dosage | Pediatric dosing is not established from available information. Consult a pediatrician. |
| Elderly Dosage | Elderly patients may need a lower dose because kidney function often declines with age. The dose should be adjusted according to kidney function, and elderly patients should be monitored for confusion, drowsiness, or slow heart rate. |
| Renal Impairment | In patients with kidney impairment, the dose of this medicine must be reduced. A common approach is to give 25 mg by injection and to increase the interval between doses according to the degree of kidney impairment. Patients with severe kidney disease may need a further reduction. Kidney function should be checked before and during treatment. |
| Hepatic Impairment | Mild to moderate liver disease usually does not require a dose change because this medicine is not heavily metabolised by the liver. In severe liver disease, the dose should be used with caution and the patient should be monitored for side effects. |
| Maximum Daily Dose | The maximum daily dose is not established from the available information and must be determined by a qualified clinician based on the patient's condition and kidney function. |
Dosage Timeline
🍽️ Food Timing Guide
⏰ What to Do If You Miss a Dose
⚠️ Side Effects of zinetac 25mg injection
✅ Common Side Effects
🚨 Serious Side Effects
⚠️ Rare Side Effects
Consult your doctor if you experience any unusual symptoms.
🔬 Drug Interactions
| Drug | Severity | Effect |
|---|---|---|
| Ketoconazole | Major | |
| Itraconazole | Major | |
| Atazanavir | Major | |
| Warfarin | Moderate | |
| Phenytoin | Moderate | |
| Theophylline | Moderate | |
| Metformin | Moderate | |
| Antacids | Minor | |
| Sucralfate | Minor | |
| Alcohol | Moderate |
🚨 Major Interactions
- Ketoconazole
- Itraconazole
- Atazanavir
⚡ Moderate Interactions
- Warfarin
- Phenytoin
- Theophylline
- Metformin
🍷 Alcohol Interaction
Alcohol should be avoided while receiving this medicine. Alcohol can increase the production of stomach acid, which may work against the medicine and worsen symptoms of ulcers or reflux. It can also add to side effects such as dizziness and drowsiness. If you drink alcohol regularly, discuss this with your doctor so that your treatment can be managed safely.
🔎 Check Your Other Medicines
Educational tool. Always confirm with your doctor or pharmacist.
🛡️ Safety & Warnings
🚫 Contraindications
["Known allergy or hypersensitivity to ranitidine or any other H2-receptor antagonist","History of acute porphyria","Use in children under 1 month of age unless specifically directed by a specialist","Concurrent use with certain antiretroviral medicines such as atazanavir, unless advised by a specialist"]
⚠️ Warnings & Precautions
["This medicine must be given by a healthcare professional; it is not for self-administration.","The dose must be reduced in patients with kidney impairment.","Elderly patients are more likely to experience confusion, hallucinations, or drowsiness.","This medicine may mask the symptoms of stomach cancer, so a doctor should rule out cancer before treatment if there are warning signs.","Avoid driving or operating machinery until you know how this medicine affects you.","Do not drink alcohol while receiving this medicine.","Tell your doctor about all other medicines you are taking, including over-the-counter products.","Use with caution in patients with liver disease or heart rhythm problems.","Stop the injection and seek help immediately if a serious allergic reaction occurs."]
🤱 Lactation Safety
This medicine passes into breast milk in small amounts. It is generally considered compatible with breastfeeding, but the baby should be monitored for unusual drowsiness or feeding problems. Consult a doctor before use while breastfeeding.
💊 Overdose Management
Overdose with this medicine is unlikely to cause serious harm in most cases, but it can lead to exaggerated side effects such as low blood pressure, slow heart rate, confusion, or drowsiness. If an overdose is suspected, stop the injection and seek immediate medical attention. Treatment is supportive and may include monitoring of vital signs, intravenous fluids, and management of symptoms. There is no specific antidote. In severe cases, haemodialysis may remove some of the medicine from the blood.
⏰ Missed Dose
This medicine is usually given by a healthcare professional in a hospital or clinic, so a missed dose is unlikely to happen at home. If you miss an appointment for your injection, contact your healthcare provider as soon as possible to reschedule. Do not try to give yourself an extra dose to make up for the missed one. Your doctor will decide the best time for the next dose based on your condition.
Additional Safety Advice
This medicine must only be given by a qualified healthcare professional in a setting where emergency equipment is available. Before receiving this medicine, tell your doctor if you are allergic to ranitidine or any other medicine, if you have kidney or liver disease, if you have porphyria, or if you are pregnant, planning pregnancy, or breastfeeding. Do not drive or operate heavy machinery until you know how this medicine affects you, because it can cause dizziness or drowsiness. Avoid drinking alcohol while receiving this medicine, as it may worsen stomach irritation and increase drowsiness. Do not take any other medicines, including over-the-counter antacids, without asking your doctor, because they can change how this medicine works. If you miss a dose, tell your healthcare provider so they can adjust the schedule safely. Keep all follow-up appointments and blood tests as advised by your doctor. Store this medicine as directed by the pharmacy, and do not use it if the solution is discoloured or contains particles.
👴 Special Considerations for Elderly
💡 For Patients Above 65
Elderly patients are more likely to have reduced kidney function, so the dose of this medicine may need to be lowered. They are also more prone to confusion, hallucinations, drowsiness, and slow heart rate. Close monitoring is recommended, and the medicine should be used at the lowest effective dose for the shortest needed time.
🤰 Pregnancy Planning (TTC)
If you are planning pregnancy, tell your doctor before receiving this medicine. It should only be used if clearly needed. Discuss safer alternatives with your doctor, and do not start or stop any medicine without medical advice.
🏥 Post-Surgery Considerations
After surgery, this medicine may be used to reduce the risk of acid aspiration or to treat stress-related ulcers. The dose and duration will be decided by your surgical team. Follow their instructions about eating, drinking, and other medicines, and report any new symptoms such as severe abdominal pain or vomiting blood.
🦷 Dental Procedures
Tell your dentist if you are receiving this medicine, especially if you are having a procedure that requires anaesthesia. This medicine reduces stomach acid and may be used before surgery to prevent aspiration. It does not usually cause problems with dental work, but your dentist should know about all your medicines.
💚 Lifestyle Tips for Better Results
🏋️ Exercise Considerations
You can usually exercise as normal once you feel well, but avoid heavy lifting or strenuous activity immediately after surgery or if you have an active ulcer. If you feel dizzy or weak after the injection, rest until you feel better. Ask your doctor when it is safe to return to your normal exercise routine.
🥗 Diet Recommendations
💼 Impact on Daily Work & Life
This medicine is usually given in a hospital or clinic, so it may not affect your work directly. However, it can cause dizziness or drowsiness, so you should not drive or operate heavy machinery until you know how it affects you. If you have an active ulcer or have had surgery, you may need time off work to recover. Discuss your work duties with your doctor before returning.
🛑 When to Stop This Medicine
This medicine is usually stopped by your doctor when you can take oral medicines or when your symptoms are controlled. Do not stop it on your own. If you develop serious side effects such as an allergic reaction, severe dizziness, or confusion, the medicine should be stopped and medical help should be sought immediately.
📅 Long-Term Use Effects
Long-term use of this medicine is not common because it is usually given for a short period in hospital. If it is used for a long time, patients should be monitored for vitamin B12 deficiency, bone health, and kidney function. Elderly patients and those with kidney disease may be more prone to confusion or drowsiness. Regular review by a doctor is important to decide whether treatment is still needed and whether a switch to oral therapy is possible.
🌿 Non-Medicine Approaches
These can complement medicine but do not replace prescribed treatment.
Tablets or capsules can be used once you can swallow, and they are usually continued after the injection.
Evidence: Well-establishedThese are stronger acid suppressants and may be used for severe ulcers or reflux.
Evidence: Well-establishedAvoiding trigger foods, alcohol, and smoking can help reduce symptoms alongside medicine.
Evidence: Well-established💉 Vaccination Considerations
💉 If You're Getting Vaccinated
There are no known interactions between this medicine and vaccines. You can receive routine vaccinations as advised by your doctor. If you are unwell or have a fever, your doctor may delay vaccination until you recover.
📦 Storage Guide
✅ DO
Store below 30°C, protected from light
❌ DON'T
Do not freeze
✅ DO
Keep in the original carton until use
❌ DON'T
Do not transfer to unmarked containers
✅ DO
Use immediately after opening
❌ DON'T
Do not use if the solution is discoloured or contains particles
✅ DO
Keep out of reach of children
❌ DON'T
Do not store in a bathroom cabinet
✈️ Traveling with This Medicine
This medicine is usually given in a hospital or clinic, so travel advice mainly applies if you are being discharged with a prescription for a similar medicine. If you need to carry this medicine during travel, keep it in its original packaging with the prescription copy. Store it below 30°C and protect it from light. Do not freeze it. If you are travelling across time zones, ask your doctor whether your dose schedule needs to be adjusted. Carry a written list of all your medicines and allergies. Check the customs rules of your destination for injectable medicines, and carry a doctor's letter if required.
💰 Cost Analysis & Savings
👥 Real Patient Stories
Educational, anonymized scenarios. Individual results may vary.
💬 Questions Patients Often Ask
A: This medicine starts reducing stomach acid within 30 to 60 minutes after injection, and the effect lasts for about 4 to 8 hours.
A: No. This medicine is an injection and must be given by a doctor or nurse in a hospital or clinic.
A: It can be used in kidney disease, but the dose must be reduced and kidney function should be monitored.
A: It should only be used in pregnancy if clearly needed and after discussion with your doctor.
A: Avoid alcohol, limit caffeine and spicy foods, and avoid driving or operating machinery until you know how the medicine affects you.
🤔 Common Patient Concerns
🔄 Substitutes for zinetac 25mg injection
View AllAlternative brands with exact same active ingredient:
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ozotac 25mg injectionOzone Pharmaceuticals Ltd ₹1.92 48.2% CHEAPER
-
acigo 25mg injectionAncalima Lifesciences Ltd ₹2.19 41% CHEAPER
-
nicotac 25mg injectionAbbott ₹2.23 39.9% CHEAPER
-
aztec 25mg injectionInd Swift Laboratories Ltd ₹2.34 36.9% CHEAPER
-
lantac 25mg injectionLaborate Pharmaceuticals India Ltd ₹2.34 36.9% CHEAPER
Medical Note: Always consult your doctor before switching medications.
🛑 Myths vs. Facts
- Myth: This medicine can be taken as a tablet at home.
Fact: This medicine is an injection and must be given by a healthcare professional in a clinic or hospital. - Myth: This medicine cures stomach cancer.
Fact: This medicine reduces acid but does not treat cancer. Any suspicious stomach symptoms should be evaluated by a doctor. - Myth: This medicine can be used for any kind of stomach pain.
Fact: It is only helpful for acid-related problems. Other causes of stomach pain need different treatment. - Myth: More medicine means faster relief.
Fact: Taking more than the prescribed dose can increase side effects and is not safer or more effective.
🔄 Alternative Options
Generic Alternatives
- Ranitidine injection 25 mg/ml
Brand Alternatives
- Rantac injection 2ml