Abzorb Bar
Sun Pharma 2 - 100 G
₹153
OTC · No prescriptionSun PharmaAntacid
Histac 300 mg Tablet
Ranitidine (300mg)
Histac 300 mg Tablet is used for this medicine is used in the treatment of acidity, heartburn, indigestion and gas and bloating.
Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated September 2026
₹11₹0.57 per tablet
Licensed pharmacyPharmacist-verified orderDelivered across India
Key details
Salt: Ranitidine (300mg)
Available variants: tablet 300 mg 20`S
Best price: ₹11 (₹0.57 per tablet)
Prescription: Not required
Manufacturer: SUN PHARMA 2
Ordering notes
Standard delivery across India. No same-day delivery nationally.
Chennai express delivery is possible and chargeable. Learn more
Returns & refunds: orders can be cancelled before dispatch; after dispatch, returns depend on the item category. Read the full policy
Composition of Histac 300 mg Tablet
Histac 300 mg Tablet contains Ranitidine (300mg). It belongs to the Antacid / H2 blocker class of medicines.
Uses of Histac 300 mg Tablet
- This medicine is used in the treatment of acidity
- heartburn
- indigestion and gas and bloating.
Key benefits
- Works within minutes
- Useful for occasional heartburn
How Histac 300 mg Tablet works
Ranitidine neutralises or reduces stomach acid, giving quick relief from burning and indigestion.
How to take Histac 300 mg Tablet
Swallow the tablet whole with a glass of water. Do not chew, crush or break it unless your doctor has told you to. Take it after meals and at bedtime. Taking it at about the same time each day helps you remember. Follow the dose and the duration written on your prescription.
Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.
Missed dose and overdose
If you miss a dose
Take it as soon as you remember. If your next dose is almost due, skip the one you missed — never take two doses together to catch up.
If you take too much
An overdose of this medicine can cause severe loose motions or constipation and disturb the body's salt balance. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.
Side effects of Histac 300 mg Tablet
Most side effects of Histac are mild and settle as the body adjusts. Reported side effects include:
- Constipation
- Loose motions
- Chalky taste
- Flatulence
Stop the medicine and seek help immediately for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.
Safety advice for Histac 300 mg Tablet
| Pregnancy | Consult your doctor before using this in pregnancy. |
|---|---|
| Breastfeeding | Consult your doctor before using this while breastfeeding. |
| Alcohol | Alcohol may worsen the side effects of this medicine. Limit it. |
| Driving | Not expected to affect your ability to drive. |
| Kidney | Consult your doctor if you have kidney disease. |
| Liver | Use with caution if you have liver disease — your doctor may adjust the dose or monitor your liver function. |
| Habit forming | No |
Warnings and precautions
This is for short-term relief. See a doctor if you need it most days for more than a couple of weeks. Seek urgent care for chest pain that spreads to the arm or jaw, comes with sweating or breathlessness — do not assume it is acidity. Antacids interfere with the absorption of many other medicines. Take them at least two hours apart from anything else.
Do not take Histac if
Not for anyone with a known allergy to this medicine or to any ingredient in the pack. Magnesium-containing antacids are avoided in significant kidney disease.
Interactions with other medicines
Reduces the absorption of thyroid tablets, iron, and several antibiotics — separate them by at least two hours.
How to store Histac 300 mg Tablet
Store below 30°C in the original pack, away from direct sunlight and moisture. Keep out of the reach of children.
Expert advice for Histac 300 mg Tablet
Take it after meals and at bedtime when symptoms are worst. Avoid late heavy meals, and raise the head of your bed if symptoms wake you at night.
Manufacturer and class
- Manufacturer:
- SUN PHARMA 2
- Therapeutic class:
- Antacid
- Drug class:
- Antacid / H2 blocker
Substitutes for Histac 300 mg Tablet
Medicines with the same active ingredient (Ranitidine (300mg)). Ask your doctor or pharmacist before switching brands.
| Medicine | Pack | Price | vs Histac 300 mg Tablet |
|---|---|---|---|
| Aciloc 300 TabletCADILA PHARMA | tablet · 20`S | ₹62 | 437% more |
| Rantac OD 300JB CHEMICALS | controlled-delivery tablet · 10`S | ₹82 | 614% more |
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Histac 300 mg Tablet FAQs
What is Histac 300 mg Tablet used for?
Histac 300 mg Tablet is commonly used for This medicine is used in the treatment of acidity, heartburn, indigestion and gas and bloating. Always follow your doctor's advice, this information is for educational purposes and not a substitute for professional medical guidance.
What is the salt in Histac 300 mg Tablet?
Histac 300 mg Tablet contains Ranitidine (300mg). If you are allergic to any of these active ingredients or excipients, do not take this medicine and speak to your doctor first.
How should I take Histac 300 mg Tablet?
Swallow the tablet whole with a glass of water. Take it exactly as prescribed; do not change the dose or stop early without talking to your doctor.
How does Histac 300 mg Tablet work?
Ranitidine neutralises or reduces stomach acid, giving quick relief from burning and indigestion.
Is Histac 300 mg Tablet a prescription medicine?
No. Histac 300 mg Tablet is available over the counter (OTC), no prescription is required. However, it is always safer to consult a doctor or pharmacist before use.
What are the common side effects of Histac 300 mg Tablet?
The side effects reported most often with Histac are Constipation, Loose motions, Chalky taste, Flatulence. Most are mild and settle as the body adjusts; tell your doctor if any of them persist or worry you, and stop the medicine and seek help at once for a rash, swelling of the face or lips, or difficulty breathing.
Can Histac 300 mg Tablet be taken during pregnancy?
Consult your doctor before using this in pregnancy. Always tell your doctor if you are pregnant, planning a pregnancy or breastfeeding before starting Histac.
Can I drink alcohol while taking Histac 300 mg Tablet?
Alcohol may worsen the side effects of this medicine.
What if I miss a dose of Histac 300 mg Tablet?
Take it as soon as you remember.
Is Histac 300 mg Tablet habit forming?
No. Histac 300 mg Tablet is not known to be habit forming when taken as prescribed.
How much does Histac 300 mg Tablet cost on PingMeDoc Pharmacy?
Histac 300 mg Tablet starts at ₹11 on PingMeDoc Pharmacy. Available in tablet 300 mg 20`S. Final price is confirmed at checkout and may vary by variant and location.
Who manufactures Histac 300 mg Tablet?
Histac 300 mg Tablet is manufactured by SUN PHARMA 2. PingMeDoc Pharmacy sources medicines only from licensed manufacturers and distributors.
How is Histac 300 mg Tablet delivered?
Histac 300 mg Tablet is delivered across India via our licensed pharmacy partners. Standard delivery timelines are confirmed at checkout. Chennai customers can opt for chargeable same-city express delivery.
Histac 300 mg Tablet, Quick facts
- Salt
- Ranitidine (300mg)
- Form
- tablet
- Best price
- ₹11 (₹0.57 per tablet)
- Prescription
- Not required (OTC)
- Brand
- SUN PHARMA 2
- Manufacturer
- SUN PHARMA 2
- Therapeutic class
- Antacid
- Drug class
- Antacid / H2 blocker
- Habit forming
- No
- Variants
- tablet 300 mg 20`S
- Delivery
- Standard across India
References
The information on Histac 300 mg Tablet is compiled from the manufacturer's prescribing information and the sources below, and is reviewed by a registered medical practitioner. It does not replace advice from your own doctor.
- PingMeDoc clinical monograph library — compiled from Indian package inserts, the Indian Pharmacopoeia
- CDSCO schedules and standard pharmacology references. Reviewed for patient readability. This is general information, not a substitute for your doctor's advice.
- Central Drugs Standard Control Organisation (CDSCO), Ministry of Health & Family Welfare, Government of India, approved drug and schedule listings.
- National List of Essential Medicines (NLEM) 2022, Government of India.
- Manufacturer's package insert / prescribing information for Histac 300 mg Tablet.
- World Health Organization, ATC/DDD classification and Model Formulary for the active ingredient.
Next steps
Safety disclaimer
Product information is for general awareness and does not replace professional medical advice. Always follow a clinician's guidance and upload a valid prescription when required.