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Prescription requiredSun PharmaAnti-diabetic

Istamet 50 mg/500 mg

Sitagliptin + Metformin

₹167MRP ₹176In stock

Delivery across India. Free above ₹999; ₹49 from ₹499, ₹99 below. Chennai express delivery is chargeable.

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Istamet 50 mg/500 mg is used for this medicine is used in the treatment of type 2 diabetes.

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

Licensed pharmacyPharmacist-verified orderDelivered across India

Key details

Salt: Sitagliptin + Metformin
Available variants: NA 15`S
Best price: ₹167
MRP: ₹176
Prescription: Required
Manufacturer: SUN PHARMA

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 Istamet 50 mg/500 mg

Istamet 50 mg/500 mg contains Sitagliptin + Metformin. It belongs to the DPP-4 inhibitor and Biguanide class of medicines.

Uses of Istamet 50 mg/500 mg

This medicine is used in the treatment of type 2 diabetes.

Key benefits

  • Weight neutral
  • Low risk of hypoglycaemia when used alone
  • Usually taken once a day
  • First-choice medicine for type 2 diabetes
  • Does not usually cause weight gain

How Istamet 50 mg/500 mg works

This medicine combines 2 active ingredients: Sitagliptin and Metformin. Sitagliptin lowers blood sugar by protecting the natural gut hormones that tell your pancreas to release insulin after a meal, so the effect is strongest when your sugar is highest. Metformin lowers blood sugar by reducing the amount of glucose your liver releases and by helping your muscles respond better to your own insulin. It does not force your pancreas to make more insulin, which is why it rarely causes low blood sugar on its own.

How to take Istamet 50 mg/500 mg

Use this medicine as your doctor has directed. 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 may cause low blood sugar, particularly if you also take other diabetes medicines. It can cause a dangerous build-up of acid in the blood, with vomiting, severe weakness and laboured breathing. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.

Side effects of Istamet 50 mg/500 mg

Most side effects of Istamet are mild and settle as the body adjusts. Reported side effects include:

  • Headache
  • Sore throat
  • Blocked or runny nose
  • Nausea
  • Stomach pain
  • Loose motions
  • Metallic taste
  • Loss of appetite
  • 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 Istamet 50 mg/500 mg

PregnancyConsult your doctor before using this in pregnancy.
BreastfeedingConsult your doctor before using this while breastfeeding.
AlcoholDo not drink alcohol while taking this medicine.
DrivingNot expected to affect your ability to drive.
KidneyConsult your doctor if you have kidney disease.
LiverConsult your doctor if you have liver disease.
Habit formingNo

Warnings and precautions

Stop and see a doctor urgently if you get severe, persistent abdominal pain that spreads to your back, with or without vomiting. Tell your doctor if you develop severe or disabling joint pain. Blisters or peeling of the skin should be reported promptly. Stomach upset is common in the first two weeks and usually settles; taking it with food helps. Tell your doctor before any surgery or a scan that uses contrast dye — this medicine is usually stopped for a short time around them. Stop and seek urgent care if you develop deep rapid breathing, severe weakness, muscle pain or vomiting with cold clammy skin. This is rare but serious. Long-term use can lower vitamin B12, so your doctor may check it from time to time.

Do not take Istamet if

Not for anyone with a known allergy to this medicine or to any ingredient in the pack. Not for type 1 diabetes or for diabetic ketoacidosis. Not for people with severe kidney disease, severe liver disease, or an acute illness causing dehydration. Not for people who have had diabetic ketoacidosis.

Interactions with other medicines

Low blood sugar is more likely when this is combined with a sulfonylurea or insulin; your doctor may lower that dose. Tell your doctor about water tablets, steroids, and any contrast dye scan. Alcohol increases the risk of the rare acid build-up and should be limited.

How to store Istamet 50 mg/500 mg

Store below 30°C in the original pack, away from direct sunlight and moisture. Keep out of the reach of children.

Expert advice for Istamet 50 mg/500 mg

It can be taken with or without food, at the same time each day. Keep up your diet and activity — this medicine supports them. Take it with or just after food to reduce stomach upset. Keep taking it even when your sugar readings look normal — that is the medicine working. Continue your diet and physical activity; this medicine works alongside them, not instead of them.

Manufacturer and class

Manufacturer:
SUN PHARMA
Therapeutic class:
Anti-diabetic
Drug class:
DPP-4 inhibitor and Biguanide

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Istamet 50 mg/500 mg FAQs

What is Istamet 50 mg/500 mg used for?
Istamet 50 mg/500 mg is commonly used for This medicine is used in the treatment of type 2 diabetes. 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 Istamet 50 mg/500 mg?
Istamet 50 mg/500 mg contains Sitagliptin + Metformin. 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 Istamet 50 mg/500 mg?
Use this medicine as your doctor has directed. Take it exactly as prescribed; do not change the dose or stop early without talking to your doctor.
How does Istamet 50 mg/500 mg work?
This medicine combines 2 active ingredients: Sitagliptin and Metformin.
Is Istamet 50 mg/500 mg a prescription medicine?
Yes. Istamet 50 mg/500 mg is a prescription-only (Rx) medicine. Upload a valid prescription from a registered medical practitioner during checkout. We cannot dispense it without a valid Rx.
What are the common side effects of Istamet 50 mg/500 mg?
The side effects reported most often with Istamet are Headache, Sore throat, Blocked or runny nose, Nausea, Stomach pain. 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 Istamet 50 mg/500 mg 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 Istamet.
Can I drink alcohol while taking Istamet 50 mg/500 mg?
Do not drink alcohol while taking this medicine.
What if I miss a dose of Istamet 50 mg/500 mg?
Take it as soon as you remember.
Is Istamet 50 mg/500 mg habit forming?
No. Istamet 50 mg/500 mg is not known to be habit forming when taken as prescribed.
How much does Istamet 50 mg/500 mg cost on PingMeDoc Pharmacy?
Istamet 50 mg/500 mg starts at ₹167 (MRP ₹176) on PingMeDoc Pharmacy. Available in NA 15`S. Final price is confirmed at checkout and may vary by variant and location.
Who manufactures Istamet 50 mg/500 mg?
Istamet 50 mg/500 mg is manufactured by SUN PHARMA. PingMeDoc Pharmacy sources medicines only from licensed manufacturers and distributors.
How is Istamet 50 mg/500 mg delivered?
Istamet 50 mg/500 mg 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.

Istamet 50 mg/500 mg, Quick facts

Salt
Sitagliptin + Metformin
Best price
₹167
MRP
₹176
Prescription
Required (Rx)
Brand
SUN PHARMA
Manufacturer
SUN PHARMA
Therapeutic class
Anti-diabetic
Drug class
DPP-4 inhibitor and Biguanide
Habit forming
No
Variants
NA 15`S
Delivery
Standard across India

References

The information on Istamet 50 mg/500 mg 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.

  1. PingMeDoc clinical monograph library — compiled from Indian package inserts, the Indian Pharmacopoeia
  2. CDSCO schedules and standard pharmacology references. Reviewed for patient readability. This is general information, not a substitute for your doctor's advice.
  3. Central Drugs Standard Control Organisation (CDSCO), Ministry of Health & Family Welfare, Government of India, approved drug and schedule listings.
  4. National List of Essential Medicines (NLEM) 2022, Government of India.
  5. Manufacturer's package insert / prescribing information for Istamet 50 mg/500 mg.
  6. 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.