Prescription requiredrespiratory

Rantac OD 300 — Uses, Dosage & Benefits

Rantac OD 300 is used for Rantac 300 mg Tablet is used in the treatment of gastroesophageal reflux disease (acid reflux) and peptic ulcer disease..

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated June 2026

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Active Ingredient / Composition

Ranitidine (300mg)

What is Rantac OD 300 used for?

Rantac 300 mg Tablet is used in the treatment of gastroesophageal reflux disease (acid reflux) and peptic ulcer disease.

How Rantac OD 300 Works

Rantac 300 mg Tablet is a H2 blocker (antacid). It works by reducing the amount of acid in the stomach which helps in relief of acid related indigestion and heartburn.

Dosage & Directions

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Rantac 300 mg Tablet may be taken with or without food, but it is better to take it at a fixed time.

Always follow your doctor's prescription. Do not self-medicate.

Pregnancy

Rantac 300 mg Tablet is probably safe to use during pregnancy.<br>Animal studies have shown low or no adverse effect on the foetus, however, there are limited human studies. Please consult your doctor.

Alcohol Interaction

Alcohol use can increase acid secretion, acid reflux in food pipe causing heartburn and decreasing effect of this drug. Rantac 300 mg Tablet can also decrease alcohol breakdown and increase its level in blood.

Rantac OD 300 — Quick Facts

Composition: Ranitidine (300mg)
Therapeutic class: respiratory
Prescription: Required (Rx)
Price: ₹82

Rantac OD 300 — Usage FAQs

How should I take this medicine?

Follow the dosage prescribed by your doctor. Do not alter the dose without medical advice.

Can I take this medicine without a prescription?

Prescription-required medicines need a valid Rx. OTC medicines can be purchased directly.

What if I miss a dose?

Take the missed dose as soon as you remember, unless it is close to your next scheduled dose. Do not double the dose.

How long does it take to show effect?

The time to show effect varies by medicine and condition. Consult your doctor for specific timelines.

Rantac OD 300 — Uses, Dosage & Benefits

Active Ingredient / Composition

What is Rantac OD 300 used for?

How Rantac OD 300 Works

Dosage & Directions

Pregnancy

Alcohol Interaction

Rantac OD 300 — Quick Facts

Rantac OD 300 — Usage FAQs

More from PingMeDoc™

Safety disclaimer

Rantac OD 300 — Uses, Dosage & Benefits

Active Ingredient / Composition

What is Rantac OD 300 used for?

How Rantac OD 300 Works

Dosage & Directions

Pregnancy

Alcohol Interaction

Rantac OD 300 — Quick Facts

Rantac OD 300 — Usage FAQs

More from PingMeDoc™

Safety disclaimer