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Rantac OD 300mg Tablet
Last updated on 31 Mar 2026 | 09:30 AM (IST)
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Rantac OD 300 mg Tablet is a medicine used to treat acid-related stomach conditions such as gastroesophageal reflux disease (GERD), heartburn, and stomach ulcers. It contains ranitidine, which works by reducing the production of stomach acid, helping relieve symptoms and promote healing. Rantac OD 300 mg Tablet is usually taken once daily as directed by a healthcare professional for safe and effective treatment.
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Introduction to Rantac OD 300mg Tablet
Rantac OD 300mg tablet 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 OD 300mg tablet if you are allergic to Ranitidine or its other ingredients. Notify your doctor if you have liver or kidney conditions. Before starting treatment with this medicine, notify your doctor if you have diabetes, 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 this medication. This medication contains castor oil which may cause stomach upset and diarrhea. Inform your doctor if you are pregnant or planning to get pregnant or think you may be pregnant or breastfeeding.
Uses of Rantac OD 300mg Tablet
- Indigestion.
- Heartburn.
- Acid ingestion.
- It is used for treating Zollinger-Ellison syndrome.
- Short-term treatment of active duodenal ulcer.
- Maintenance therapy for duodenal ulcer patients.
- Treatment of pathological hypersecretory conditions.
- Short-term treatment of active benign gastric ulcer.
- Maintenance therapy for gastric ulcer patients.
- Treatment of GERD (gastroesophageal reflux disease).
- Treatment of erosive esophagitis.
Therapeutic Effects of Rantac OD 300mg Tablet
Rantac OD 300mg tablet 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 OD 300mg Tablet 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 OD 300mg tablet and can cause undesirable side effects.
More Information about Rantac OD 300mg Tablet
- 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 OD 300mg Tablet
Take the Rantac OD 300mg tablet as your physician advises. Do not consume more than two tablets in 24 hours. Do not crush, chew, or open the medicine. Your physician will decide the correct dosage and duration based on age, body weight, and disease condition. Only stop taking the tablet if your doctor advises you to stop.
Safety Advice for Rantac OD 300mg Tablet
Breast Feeding
It is unknown whether Rantac OD 300mg tablet 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 OD 300mg tablet is safe. Please speak with your physician.
Liver
Rantac OD 300mg tablet is used with caution in patients with liver impairment. Inform your physician about the pre-existing live conditions. Your physician will monitor your liver functions and adjust the dose accordingly.
Lungs
It is unknown whether Rantac OD 300mg tablet is safe for patients with lung problems. Inform your physician if you have any lung disease before starting the treatment. Contact your doctor if you experience any lung-related symptoms.
Driving
Rantac OD 300mg tablet does not usually affect your ability to drive.
Pregnancy
Limited information is available on using Rantac OD 300mg tablet 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 OD 300mg Tablet
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
- Low platelet count
- Severe stomach pain (pancreatitis)
- Pain while passing urine, blood in the urine
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 OD 300mg tablet 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 OD 300mg Tablet
Q1.
What is the best time of day to take Rantac OD 300mg tablet?
The best time of day to take Rantac OD 300mg tablet 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 OD 300mg tablet?
Common side effects of Rantac OD 300mg tablet 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 OD 300mg tablet?
To manage the side effects of Rantac OD 300mg tablet, 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 OD 300mg tablet when pregnant?
The safety of using Rantac OD 300mg tablet during pregnancy is uncertain. Consult your medical professional regarding the use of Rantac OD 300mg tablet during pregnancy. The potential benefits and risks should be carefully assessed. Your doctor will suggest taking this medicine only if it's necessary.
Q5.
What should I do if I miss a dose of Rantac OD 300mg tablet ?
If you miss a capsule dose, take it as soon as possible. However, if it's close to the time for your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose of Rantac OD 300mg tablet.
Fact Box of Rantac OD 300mg Tablet
| Molecule Name: Ranitidine | Therapeutic class: Dietary supplement |
Pharmacological class: H2 receptor antagonist
| Indications: 1. Reduce cholesterol levels 2. Prevent nutritional deficiencies. 3. Prevent cardiovascular disease. 4. Improve cognitive function. |
References
- Noumed life science limited, Electronic Medicines Compendium (EMC), [Accessed on 6th June 2023], pil.2497.pdf (medicines.org.uk)
- GlaxoSmithKlin, US Food and Drug Administration; [Accessed on 6th 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
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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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