Istamet 50mg/500mg Tablet
15 Tablet(s) in StripProduct Summary
Istamet 50/500 mg Tablet combines sitagliptin 50 mg with metformin hydrochloride 500 mg, and Sun Pharma makes this oral antidiabetic combination for controlling high blood sugar in type 2 diabetes. It increases insulin production, reduces the body's sugar production and improves its response to insulin.
Medically Reviewed by Dr. Ritu Budania
Last updated on: 13 October 2026 | 3:21 PM (IST)
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TABLET
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General Information
| Therapy | Anti-diabetic |
| Composition | Metformin Hydrochloride(500.0 Mg)+Sitagliptin(50.0 Mg) Metformin Hydrochloride 500.0 Mg+Sitagliptin 50.0 Mg |
Metformin Hydrochloride 500.0 Mg+Sitagliptin 50.0 Mg

℞Avighna Medicare Pvt Ltd
₹256.78 ₹130.96
₹8.73/Tablet
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*Offer applicable on orders above ₹1000About Istamet
Istamet tablet is a combination medicine containing sitagliptin and metformin. It is used along with a healthy diet and regular exercise to control high blood sugar in patients with type 2 diabetes. Treatment of type 2 diabetes mellitus lowers the risk of heart disease, kidney disease, stroke, blindness, and limb loss. Sitagliptin works by increasing insulin production in the body after a meal and decreasing sugar production. Metformin works by restoring the body's natural response to insulin and reducing sugar production.
A few other tablets with sitagliptin and metformin as their composition are Janumet 50/500mg tablet, and Sitazor 50/500mg tablet.
Before starting the Istamet tablet, inform your doctor if you are pregnant, planning on becoming pregnant, or breastfeeding. Also, inform your doctor about all other medicines that you take and your complete medical history. Nausea or vomiting, flatulence, loose motion or constipation, and stomach pain are some of the side effects of Istamet tablets.
Uses
Contraindications
- If you are allergic to sitagliptin, metformin or any other ingredients of Istamet 50/500 tablet.
- If you have severe kidney or liver disease.
- If your diabetes is not under control and you also have high blood sugar, nausea, vomiting, loose motions, rapid loss of weight, pain in the stomach, breathing difficulty, sleepiness, etc.
- If you have dehydration or you have the presence of severe infection.
- If you have to go to do an x-ray or scan dye is injected in your blood before doing the x-ray or scan.
- If you have a recent history of a heart attack.
- If you are a heavy alcohol drinker.
- If you are a lactating mother.
Side effects
- Nausea
- Vomiting
- Headache
- Metallic taste
- Flatulence
- Loose motion
- Constipation
- Stomach pain
- Loss of appetite
Precautions and Warnings
Alcohol
CONTRAINDICATEDConsumption of alcohol along with Istamet 50/500 tablet can cause a medical condition called ' lactic acidosis' which can cause vomiting, pain in the stomach, breathing difficulty, tiredness, muscle cramps, decrease body temperature, decrease heartbeat. Avoid alcohol consumption while on this medicine.
Pregnancy
WITH CAUTIONComponent of Istamet 50/500 tablet can cause harm to the unborn baby if taken during pregnancy. This medicine should not be taken by pregnant women.
Breastfeeding
WITH CAUTIONComponent of Istamet 50/500 tablet can pass through breastmilk and can cause harm to the breastfed baby if taken by lactating mother. This medicine should not be taken by lactating mother.
Driving
WITH CAUTIONIstamet 50/500 tablet can cause dizziness or sleepiness. Avoid driving if you have dizziness or sleepiness after taking this medicine.
Other General Warnings
- You have skin blisters after taking this medicine.
- You have a fever, vomiting, loose motion, heat exposure, and less fluid intake.
- You have vomiting, pain in the stomach, breathing difficulty, tiredness, muscle cramps, decreased body temperature, and decreased heartbeat after taking this medicine.
- You have low blood sugar after taking other anti-diabetic medicines along with this medicine.
- You have type 1 diabetes mellitus.
- You are undergoing any surgery.
- Your doctor tells you that you have increased triglyceride levels in your blood and you have gallstones.
Directions for use
- Take Istamet tablet with food as prescribed by your doctor.
- Do not stop taking Istamet 50/500 tablet on your own without informing your doctor.
Storage and disposal
- Store Istamet tablet at a temperature not above 30°C in a cool and dry place.
- Keep it out of the reach of children and pets.
Quick tips
- To manage your condition alongside Istamet 50/500mg Tablet, make lifestyle changes such as exercising for at least 30 minutes daily, maintaining a healthy weight, managing stress, avoiding smoking, and moderating alcohol intake. A balanced diet rich in fruits and vegetables is also important for good blood sugar control.
- It's important to regularly monitor your blood sugar levels as directed by your doctor and report any changes. Before starting on Istamet 50/500mg Tablet, let your doctor know if you are pregnant, planning a pregnancy, or breastfeeding, as well as your detailed medical history.
- To achieve the best results, take this tablet at the same time every day and do not skip doses. If you miss a dose, take it as soon as you remember. However, if it's almost time for your next dose, skip the missed dose and take your next dose at the regular time.
- Istamet 50/500mg tablet may cause common side effects like headaches, stomach pain, loose motions, and nausea/vomiting. Inform your doctor if these persist or worsen. Consult your doctor before taking this medication if you have kidney or liver disease.
Dosage
Overdose
Missed a dose
How Istamet works
- Sitagliptin works by increasing insulin production by the body after a meal and decreasing sugar production by the body.
- Metformin works by restoring the natural response of the body to insulin and decreasing sugar production by the body.
Interactions
Drug interactions of Istamet with other medicine salt
Food interactions
Frequently asked questions
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Substitutes for Istamet
References
- Janumet 50 mg/1000 mg film-coated tablets- Summary of Product Characteristics (SmPC) - (emc) [Internet]. Medicines.org.uk. 2025 [cited 16th Oct 2025]
- Janumet 50 mg/1000 mg film-coated tablets- Patient Information Leaflet (PIL) - (emc) [Internet]. Medicines.org.uk. 2025 [cited 16th Oct 2025]
- NHS. Sitagliptin. NHS website. 2025 [cited 16th Oct 2025]
- U.S. National Library of Medicine. Sitagliptin. MedlinePlus. 2025 [cited 16th Oct 2025]
- National Cancer Institute. Metformin hydrochloride. National Cancer Institute. 2025 [cited 16th Oct 2025]
- National Center for Biotechnology Information. Metformin Hydrochloride. PubChem. 2025 [cited 16th Oct 2025]
- DrugBank. Sitagliptin [Internet]. 2025 [cited 16th Oct 2025]
- National Center for Biotechnology Information. Sitagliptin [Internet]. PubChem Compound Database; 2025 [cited 5th June 2026]
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