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Rantac Injection
Last updated on 31 Mar 2026 | 09:30 AM (IST)
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5 AMPOULE(s) OF 2.5ML
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Introduction to Rantac Injection
Rantac injection contains the active ingredients Ranitidine. It belongs to the family of medications known as the H2 receptor antagonist. This medication treats heartburn, indigestion, and acid indigestion and reduces the amount of acid the stomach produces. It is used for treating and preventing stomach ulcers. It also treats duodenal (small intestine) ulcers. Before starting the treatment with this medication, inform your doctor if you are more than 65 years of age.
Do not consume Rantac injection if you are allergic to Ranitidine or its other ingredients. Notify your doctor if you have heart or kidney conditions. Before starting treatment with this medicine, notify your doctor if you have diabetes, lung disease, immune system problems, acute porphyria, or a history of stomach ulcer or duodenal ulcer.
Nausea, headache, stomach pain, and constipation are common side effects of Rantac injection. Inform your doctor if you are pregnant or planning to get pregnant or think you may be pregnant or breastfeeding. In case of impaired kidney function, a lower dose may be prescribed by your doctor.
Uses of Rantac Injection
- Heals and prevents ulcers in the stomach or duodenum.
- Improves symptoms of acid-related issues like indigestion or heartburn.
- Stops ulcers from bleeding.
- Controls stomach acid during surgery under anesthesia.
Therapeutic Effects of Rantac Injection
Rantac injection reduces stomach acid production by blocking the action of histamine, a substance that triggers acid secretion in the stomach. This relieves symptoms caused by excess stomach acid, like heartburn and acid indigestion.
Interaction of Rantac Injection with other drugs
Inform your doctor about any prescribed medications, over-the-counter medicines, nutritional or vitamin supplements, and herbal products you take or have taken before the treatment. Certain medications may interact with Rantac injection and can cause undesirable side effects.
More Information about Rantac Injection
- Keep out of sight and reach of pets and children.
- Do not freeze the medicine.
- Do not store above 25°C.
- Always check the expiry date before consuming it.
How to consume Rantac Injection
Rantac injection will be administered to you by a healthcare professional in a hospital setting. It is usually administered in a vein (intravenous). Your doctor will decide the dose, route of administration, and frequency based on your disease condition and other factors.
Safety Advice for Rantac Injection
Breast Feeding
It is unknown whether Rantac injection is excreted in breast milk. So, before starting the treatment, inform your doctor if you are breastfeeding. Constant your doctor for more information. Your doctor will suggest this medicine only if needed.
Alcohol
It is unknown whether consuming alcohol while taking Rantac injection is safe. Please speak with your physician.
Liver
It is unknown whether Rantac injection is safe for patients with liver problems. Inform your physician if you have any liver disease before starting the treatment. Contact your doctor if you experience any liver-related symptoms.
Lungs
Rantac injection is used with caution in patients with lung impairment. Inform your physician about the pre-existing lung conditions. Your physician will monitor your lung functions and adjust the dose accordingly.
Driving
Rantac injection does not usually affect your ability to drive.
Pregnancy
Limited information is available on using Rantac injection during pregnancy. Notify your healthcare professional if you are pregnant or planning to have a baby think you may be pregnant. Your doctor will suggest this medicine only if needed.
Side Effects of Rantac Injection
Side effects are unwanted symptoms caused by medicines. Even though all medicines cause side effects, not everyone gets them.
Serious
- Allergic reactions (rash, itching, or hives on the skin, swelling on the lips, face, tongue, or other body parts, pain in the chest, shortness of breath, or wheezing)
- Sudden fever
- Slow or irregular heartbeat
- Severe stomach pain (pancreatitis)
- Kidney problem
Common
- Constipation
- Stomach pain
- Sick feeling (nausea)
- Headache
Word of Advice
Do not double-dose the medicine to make up for a forgotten dose. Notify your doctor if you experience any serious side effects. Liver and kidney patients should take Rantac injection cautiously and inform the doctor about all the underlying medical conditions and medications they consume. Do not stop the medicine until your doctor advises. Your medical professional will inform you if you need any dose adjustments. Contact your doctor for more information.
FAQs about Rantac Injection
Q1.
What is the best time of day to take Rantac injection?
The best time of day to take Rantac injection can vary depending on the individual and healthcare provider's recommendation. It is generally recommended to follow the prescribed dosage instructions and take medicine at the same time each day for consistency.
Q2.
What are the side effects of Rantac injection?
Common side effects of Rantac injection may include headache, dizziness, diarrhea, constipation, and stomach discomfort. Rare but serious side effects may include allergic reactions, liver problems, and low platelet count.
Q3.
How to manage the side effects of Rantac injection?
To manage the side effects of Rantac injection, follow your doctor's instructions, stay hydrated, and monitor the changes. Report severe side effects to your doctor and inform them about other medications or conditions. Maintain a healthy lifestyle and consult your doctor for personalized guidance.
Q4.
Can you take Rantac injection when pregnant?
The safety of using Rantac injection during pregnancy is uncertain. Consult your medical professional regarding the use of Rantac injection during pregnancy. The potential benefits and risks should be carefully assessed. Your doctor will suggest taking this medicine only if it's necessary.
Q5.
Does Rantac injection cause constipation?
Constipation is not a commonly reported side effect of this medicine; it may occur in some individuals. If you experience constipation, contact your doctor immediately. Your doctor may prescribe other medicine to reduce the side effects of Rantac injection.
Fact Box of Rantac Injection
| Molecule Name: Ranitidine | Therapeutic class: Dietary supplement |
Pharmacological class: H2 receptor antagonist
| Indications: 1. Heals and prevents ulcers in the stomach or duodenum. 2. Improves symptoms of acid-related issues like indigestion or heartburn. 3. Stops ulcers from bleeding. 4. Controls stomach acid during surgery under anesthesia. |
References
- Alliance Pharmaceuticals Limited, Electronic Medicines Compendium (EMC), [Revised on May 2020] [Accessed on 7th June 2023], PATIENT INFORMATION LEAFLET (medicines.org.uk)
- GlaxoSmithKlin, US Food and Drug Administration; [Accessed on 7th June 2023],label (fda.gov)
- Keith A. Sharkey and Wallace K. MacNaughton, Gastrointestinal Pharmacology, Pharmacotherapy for Gastric Acidity, , Goodman & Gilman’s Pharmacological Basis of Therapeutics, 13th Edition, 2018, 909-913.
Disclaimer
MrMed’s primary intention is to ensure that its consumers get information that is reviewed by experts, accurate and trustworthy. The information and contents of this website are for informational purposes only. They are not intended to be a substitute for professional medical advice, diagnosis, or treatment. Please seek the advice of your doctor and discuss all your queries related to any disease or medicine. Do not disregard professional medical advice or delay in seeking it because of something you have read on MrMed. Our mission is to support, not replace, the doctor-patient relationship.
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Author Details
Written By
Aswini Priya Velmurugan
PG in Biotechnology
Reviewed By
Dr. Tejashwin Adiga
MBBS
Last updated : 31 Mar 2026 | 09:30 AM (IST)
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