Gvia-M Tablet 50mg/850mg (Sitagliptin + Metformin HCl)

Drug Class: Anti-Diabetic Combination — DPP-4 Inhibitor + Biguanide | Form: Oral Tablet | Prescription Status: Prescription Only (Rx) — DRAP Registered

What is Gvia-M Tablet 50mg/850mg?

Gvia-M Tablet 50mg/850mg is a higher-strength combination medicine containing Sitagliptin 50mg and Metformin Hydrochloride 850mg. It is used to control blood sugar levels (بلڈ شوگر) in adults with type 2 diabetes (ذیابیطس ٹائپ 2) who need stronger glucose control than the standard 50mg/500mg strength provides. It is prescribed when diet, exercise, and lower-dose medicines — including Metformin alone — are no longer enough to keep blood sugar within a safe range. Sitagliptin works by stimulating the body to release more insulin after meals, while the higher 850mg dose of Metformin provides stronger control over the liver's sugar production and improves the body's sensitivity to insulin. Together they offer more powerful and comprehensive blood sugar management than either medicine alone. Gvia-M 50mg/850mg must only be taken as prescribed by your doctor.

What is Gvia-M Tablet 50mg/850mg Used For?

Gvia-M Tablet 50mg/850mg is approved for the following:

• Type 2 Diabetes Mellitus — Inadequate Control on Metformin Alone — for patients whose blood sugar remains uncontrolled despite taking Metformin at maximum tolerated doses (میٹفارمن سے مکمل کنٹرول نہ ہونے پر)
• Step-Up from Lower Strength Gvia-M — for patients who were on Gvia-M 50mg/500mg but need a stronger dose for better blood sugar control
• Adjunct to Diet and Exercise — used alongside healthy eating and physical activity when lifestyle changes alone are insufficient
• Add-On Combination Therapy — used with other diabetes medicines such as sulphonylureas or insulin when additional blood sugar control is needed
• HbA1c Reduction — lowering the HbA1c level — a key measure of long-term blood sugar control over 2 to 3 months
• Prevention of Diabetes Complications — sustained blood sugar control reduces long-term risk of kidney damage, nerve damage, eye problems, and cardiovascular disease

How Does Gvia-M Tablet 50mg/850mg Work?

Gvia-M 50mg/850mg controls blood sugar through two different and complementary mechanisms — with the higher Metformin dose providing a stronger glucose-lowering effect compared to the 500mg strength:

Sitagliptin 50mg — DPP-4 Inhibitor: After a meal, the gut releases hormones called incretins — mainly GLP-1 and GIP — that signal the pancreas to produce insulin and tell the liver to stop releasing extra sugar into the blood. An enzyme called DPP-4 breaks these hormones down very quickly. Sitagliptin blocks the DPP-4 enzyme, allowing incretin hormones to stay active for longer — resulting in more insulin being released when blood sugar rises after eating. Importantly, this effect is glucose-dependent — meaning Sitagliptin only triggers extra insulin when blood sugar is already elevated, which greatly reduces the risk of dangerous low blood sugar (hypoglycaemia — ہائپوگلیسیمیا) compared to some other diabetes medicines.

Metformin Hydrochloride 850mg — Biguanide: The higher 850mg dose of Metformin provides stronger action across three key areas. First, it more powerfully reduces the liver's excess sugar production between meals — a major driver of high fasting blood sugar in type 2 diabetes. Second, it improves the body's sensitivity to insulin — helping cells absorb and use glucose more effectively, directly addressing insulin resistance (انسولین کے خلاف مزاحمت). Third, it slows the absorption of sugar from food in the digestive system — helping prevent sharp rises in blood sugar after meals. The 850mg dose achieves a greater glucose-lowering effect than 500mg while still being taken twice daily, offering a practical step up in treatment intensity.

Dosage and Administration

⚠️ Always take this medicine exactly as your doctor prescribed. Never change your dose without consulting your doctor. Regular blood sugar and kidney function monitoring is essential. Always take with meals — this significantly reduces stomach side effects from the higher Metformin dose.

• Always take with food — this is especially important with the 850mg Metformin dose to reduce nausea, diarrhoea, and stomach discomfort
• Swallow the tablet whole with a full glass of water — do not crush, break, or chew
• Take at the same times every day — morning and evening meals are ideal
• Do not skip doses — missed doses can cause blood sugar to rise quickly
• Continue diet, exercise, and lifestyle changes alongside this medicine at all times
• Your doctor will monitor blood sugar, HbA1c, and kidney function at regular intervals
• Inform your doctor before any surgical procedure or medical investigation involving contrast dye — Metformin must be temporarily stopped in these situations
• If you experience severe illness with vomiting, diarrhoea, or dehydration — contact your doctor immediately as Metformin may need to be paused

Active Ingredients

Who Should NOT Use Gvia-M Tablet 50mg/850mg?

Do not take this medicine if you:

• Are allergic to Sitagliptin, Metformin, or any other ingredient in this tablet
• Have type 1 diabetes — this medicine is only for type 2 diabetes
• Have diabetic ketoacidosis — a serious diabetes emergency requiring immediate insulin treatment
• Have severe kidney disease or kidney failure (گردے کی شدید ناکامی) — Metformin is strictly contraindicated due to risk of lactic acidosis
• Have severe liver disease or liver failure
• Have heart failure or any condition causing reduced oxygen supply to the body
• Are about to have or have recently had surgery requiring general anaesthesia — Metformin must be stopped temporarily
• Are scheduled for a procedure involving iodinated contrast dye — Metformin must be stopped before and 48 hours after
• Are pregnant — diabetes in pregnancy requires specialist management usually with insulin
• Are under 18 years of age — not approved for use in children or adolescents

Tell your doctor before use if you have:

• Any degree of kidney impairment — even mild — kidney function (eGFR) must be checked before starting and regularly during treatment
• Any liver disease — even mild liver problems increase the risk of lactic acidosis with Metformin
• A history of pancreatitis (لبلبے کی سوزش) — DPP-4 inhibitors including Sitagliptin have been associated with pancreatitis in rare cases
• Heart disease or a history of heart failure
• Regular alcohol consumption — increases the risk of lactic acidosis with Metformin
• If you are over 65 years of age — kidney function must be monitored more frequently as it naturally declines with age
• If you are on a calorie-restricted diet or planning to fast — blood sugar management will need adjustment

Side Effects

Like all medicines, Gvia-M Tablet 50mg/850mg can cause side effects. Not everyone will experience them. The higher Metformin dose in this strength means gastrointestinal side effects may be more noticeable — particularly when first starting treatment.

Common Side Effects (relatively frequent):

• Nausea (متلی) — common with Metformin, especially in the first few weeks or when dose is increased — taking with food reduces this significantly
• Diarrhoea or loose stools (دست) — usually improves after the first 2 to 4 weeks as the body adjusts
• Stomach discomfort, bloating, or cramping — most common in the early weeks of treatment
• Loss of appetite — usually temporary
• Metallic taste in the mouth — associated with Metformin
• Upper respiratory tract infection — runny nose, sore throat — associated with Sitagliptin
• Headache (سردرد)
• Mild indigestion (بدہضمی)

Serious Side Effects (less common — seek medical help immediately):

• Lactic Acidosis — a rare but life-threatening build-up of lactic acid in the blood caused by Metformin. The risk is higher at the 850mg dose in vulnerable patients. Signs include severe muscle pain or cramps, difficulty breathing, stomach pain, vomiting, feeling extremely cold or weak, dizziness, or irregular heartbeat. Stop the medicine and go to hospital immediately — this is a medical emergency (یہ ایک طبی ہنگامی صورتحال ہے)
• Pancreatitis — inflammation of the pancreas associated with Sitagliptin. Signs include severe persistent stomach pain spreading to the back, with or without vomiting — stop the medicine and seek emergency help immediately
• Hypoglycaemia (Low Blood Sugar) — particularly when Gvia-M is combined with a sulphonylurea or insulin. Signs include shaking, sweating, confusion, rapid heartbeat, and extreme hunger (بلڈ شوگر کا خطرناک حد تک گر جانا)
• Severe Allergic Reaction — sudden rash, swelling of the face, lips, or throat, difficulty breathing — seek emergency help immediately
• Severe Skin Reactions — blistering or widespread peeling of the skin — very rare but serious — seek emergency help immediately
• Severe Joint Pain — disabling joint pain has been reported with DPP-4 inhibitors — inform your doctor if unusual joint pain develops
• Signs of Kidney Problems — reduced urination, leg or ankle swelling — inform your doctor immediately

If you notice any serious side effects, stop taking the medicine and go to the nearest hospital or emergency immediately.

Drug and Food Interactions

Tell your doctor about ALL medicines you are currently taking. Gvia-M Tablet 50mg/850mg may interact with:

Always inform your doctor about all medicines, vitamins, herbal products, or dietary supplements you are taking.

Storage Instructions

• Store below 25°C in a cool, dry place
• Keep away from direct sunlight and moisture
• Keep out of reach of children (بچوں کی پہنچ سے دور رکھیں)
• Do not use after the expiry date printed on the pack
• Do not store in the bathroom or near a kitchen sink
• Keep tablets in their original packaging until use

Frequently Asked Questions (FAQs)

What is Gvia-M 50mg/850mg used for and how is it different from Gvia-M 50mg/500mg?

 Both strengths contain the same two medicines — Sitagliptin and Metformin — and work in the same way. The difference is the Metformin dose. Gvia-M 50mg/850mg contains 850mg of Metformin compared to 500mg in the lower strength. This higher dose provides stronger blood sugar control and is prescribed when the 500mg strength or Metformin alone is no longer keeping blood sugar within a safe range. Your doctor will prescribe the strength most appropriate for your level of diabetes control.

Why has my doctor increased my dose from Gvia-M 500mg to 850mg?

 This usually means your blood sugar or HbA1c levels have not been adequately controlled on the lower strength. Increasing the Metformin dose to 850mg provides a stronger glucose-lowering effect — particularly in reducing the liver's excess sugar production and improving insulin sensitivity. Your doctor will monitor your response to the new dose through regular blood tests and will adjust your treatment plan accordingly.

Will the higher Metformin dose cause more stomach side effects?

 The 850mg dose of Metformin may cause slightly more noticeable gastrointestinal side effects — particularly nausea, diarrhoea, and stomach discomfort — especially in the first few weeks of treatment or when switching up from the 500mg strength. Taking the tablet with food, drinking plenty of water, and not skipping meals significantly reduces these effects. For most people these symptoms improve within 2 to 4 weeks as the body adjusts. If they remain severe or do not improve, tell your doctor.

What is lactic acidosis and am I at higher risk with the 850mg dose?

 Lactic acidosis is a rare but serious build-up of lactic acid in the blood caused by Metformin. While the risk is still very low in patients with normal kidney and liver function, the higher Metformin dose means it is especially important to attend all scheduled kidney function tests, avoid alcohol, stay well hydrated, and stop the medicine if you become seriously unwell with vomiting or dehydration. Seek emergency medical help immediately if you experience severe muscle pain, difficulty breathing, extreme weakness, or stomach pain — these can be early warning signs of lactic acidosis.

Do I still need to monitor my blood sugar at home?

 Yes — regular home blood sugar monitoring with a glucometer is an important part of managing type 2 diabetes. Your doctor will advise how often to check — typically before meals and sometimes 2 hours after eating. This helps you understand how your blood sugar responds to food, exercise, and medicine, and allows your doctor to fine-tune your treatment. Your HbA1c will also be checked every 3 to 6 months at the clinic.

Can I drink alcohol while taking Gvia-M 50mg/850mg?

 Alcohol must be avoided while taking Gvia-M 50mg/850mg. Alcohol significantly increases the risk of lactic acidosis with Metformin — and this risk is greater with the higher 850mg dose. Alcohol also affects blood sugar unpredictably — sometimes causing it to rise and sometimes causing dangerous drops — making diabetes management much harder. If you have any questions about alcohol and your diabetes management, speak openly with your doctor.

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⚕️ Medical Disclaimer: This product description is for informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified doctor or pharmacist before starting, stopping, or changing any medication. This product is a prescription medicine — it must only be used under the supervision of a licensed healthcare professional.

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DRAP Registered | Prescription Required (Rx) | For use under medical supervision only