Metformin SR

Metformin SR is a biguanide that is prescribed, alone or along with other agents, to help regulate blood sugar levels in individuals with type 2 diabetes mellitus.


Metformin SR

Exermet, Gluconorm SR, Xmet SR, Walaphage SR, Zoform, Glumet XR, Metform SR and others


Glenmark, Wallace, Pinnacle, Lupin, Protec, FDC

Tablet (SR)

500 mg, 1,000 mg


Metformin SR

I. Introduction

Metformin SR, or Sustained Release Metformin, is a medication for type 2 diabetes. It is specifically designed to release in the body, which helps reduce gastrointestinal side effects and allows for once-daily dosing. The historical origins of metformin can be traced back centuries when it was derived from the French lilac. It was later introduced as a medication in France in 1957. Has gained immense popularity worldwide due to its safety and effectiveness. Metformin SR plays a role in managing diabetes by effectively lowering blood sugar levels without significantly increasing the risk of hypoglycemia. Additionally, it has effects on weight management and cardiovascular health.

II. Uses of Metformin SR

Managing Type 2 Diabetes As a first-line treatment option, Metformin SR is commonly prescribed due to its effectiveness and safety record. It helps to lower blood glucose levels and enhances insulin sensitivity. Polycystic Ovary Syndrome (PCOS) Metformin SR is often recommended for women with PCOS. It assists in regulating cycles and reducing insulin resistance, a common characteristic of PCOS. Metabolic Syndrome Given its ability to improve insulin sensitivity, Metformin SR plays a role in treating metabolic syndrome. This condition encompasses factors that increase the risk of heart disease, stroke, and type 2 diabetes. Weight Management For individuals with prediabetes or insulin resistance who're overweight or obese, Metformin SR can benefit weight loss or maintenance. It reduces hunger. Lowers insulin levels, ultimately improving metabolic function.


Metformin: Uses, Dosage, Side Effects, Warnings -

Metformin (Oral Route) Description and Brand Names - Mayo Clinic

Metformin (Oral Route) Proper Use - Mayo Clinic

III. Off-label Use of Metformin SR

Scientists are currently studying the potential of metformin for lifespan by imitating the effects of caloric restriction, which is known to be linked to longer life in various organisms. For individuals with blood glucose levels that do not meet the criteria for diabetes, metformin SR can help stabilize glucose levels and prevent the development of full-blown diabetes. Some research suggests that Metformin SR may benefit from managing blood glucose during pregnancy as an alternative to insulin. Additionally, there is emerging evidence indicating that metformin could be effective in preventing types of cancer by inhibiting tumor growth.


Is it safe to use metformin during pregnancy? - Medical News Today

Metformin in reproductive health, pregnancy and gynaecological cancer … - Oxford Academic Journals

Metformin in pregnancy and risk of adverse long-term outcomes: a … - BMJ Open Diabetes Research & Care

IV. How Metformin SR Works

Metformin SR works primarily involves inhibiting glucose production in the liver and increasing the muscle's response to insulin, allowing for glucose utilization in the bloodstream. One of its effects is enhancing insulin sensitivity in both tissues and the liver by improving the activity of insulin receptors and promoting glucose uptake through various insulin signaling pathway components. Metformin SR also reduces hepatic glucose production, decreasing sugar entering the bloodstream. Recent studies suggest that metformin may impact the composition of gut bacteria, which could potentially influence its effectiveness within the body. This alteration in gut microbiota might contribute to metformins' ability to lower glucose levels and play a role in its health benefits.

V. Dosage and Administration

Initial Dosage Recommendations; Typically, the starting dose for Metformin SR is 500 once a day during the evening meal. The dosage can be gradually increased by 500 mg per week or 850 mg every two weeks, depending on how it is tolerated and the response to treatment. Titration Schedules; To minimize side effects, increasing the dose slowly and cautiously is recommended. Regular assessment of function should guide any necessary adjustments in dosage. Special Populations (Elderly, Renal Impairment); For patients and those with renal impairment, dose adjustments are required. It is essential to monitor function regularly and make appropriate changes in dosage to prevent lactic acidosis. Forms and Strengths Available; Metformin SR comes in structures, such as extended-release tablets of 500 mg, 750 mg, and 1000 mg.

VI. Composition of Metformin SR

The main component of Metformin SR is metformin hydrochloride, which's a type of antihyperglycemic drug known as a biguanide. In addition to the ingredient, Metformin SR tablets also contain other substances like povidone, hypromellose, and magnesium stearate. These additional ingredients help ensure the medication is released slowly over time. The critical distinction between metformin and Metformin SR lies in how they release the active ingredient. Unlike metformin, Metformin SR is specifically designed to remove the medication slowly, allowing for once-daily dosing and potentially reducing gastrointestinal side effects that may occur with immediate-release metformin formulations.

VII. Side Effects of Metformin SR

Common Side Effects; It is common to experience nausea, vomiting, and diarrhea when starting this medication. However, these symptoms typically improve as your body gets used to the drug. Vitamin B12 Deficiency; Long-term use of metformin can decrease vitamin B12 levels in the body. Rare but Serious Side Effects; Lactic Acidosis is a severe metabolic complication that may occur in specific situations when metformin accumulates in the body. Additionally, while metformin alone does not usually cause hypoglycemia ( blood sugar), it's essential to be cautious when using it alongside other antidiabetic drugs, as hypoglycemia may occur.

VIII. Interaction with Other Drugs

Potential Interactions with Medications It's important to know that metformin can interact with antidiabetic agents, contrast media, and certain antiviral medications. It is advisable to discuss all the medicines you are taking, including over-the-counter drugs and supplements, with a healthcare professional when using metformin. Considerations Regarding Alcohol Consumption Drinking alcohol can increase the risk of acidosis, especially if you engage in binge drinking, have malnutrition issues, or suffer from hepatic impairment. Patients who take Metformin SR are usually advised to moderate or abstain from alcohol consumption. Possible Interactions with Herbal Supplements Some herbal supplements, like fenugreek, ginseng, or nettle, may interact with metformin by enhancing or decreasing its effects. Patients should consult their healthcare provider before starting any herbal supplements while taking Metformin SR.

IX. Warning and Contraindications

Metformin SR should not be used in patients with kidney problems, acute or chronic metabolic acidosis, or known allergies to metformin. It should be used with caution in patients who're, over 65 years old, have liver problems, or have a history of alcohol abuse. When contrast materials are used during radiological procedures, metformin should be temporarily stopped to prevent any harm to the kidneys.

X. Careful Administration Considerations

Regular monitoring of kidney function is crucial because metformin, which is eliminated by the kidneys, can lead to acidosis in individuals with compromised renal function. It is generally recommended to avoid using metformin in patients who show signs of disease or have laboratory evidence of decreased liver function due to its potential impact on lactate clearance. To manage blood sugar levels and prevent hypoglycemia, it is essential to regularly and consistently monitor blood glucose levels, particularly when metformin is combined with other antidiabetic medications.

XI. Metformin SR vs Metformin

Metformin is a medication that helps control blood sugar levels in individuals diagnosed with type 2 diabetes. It reduces the liver's glucose production and enhances muscle cells' response to insulin. Metformin is typically taken orally, either in tablet or liquid form. There are two types of metformin tablets; slow-release tablets. The main distinction lies in how they release metformin into the body. Standard tablets release it quickly, whereas slow-release tablets gradually dispense it over hours. Slow-release tablets are also called metformin SR, metformin ER or Glucophage SR.

Benefits of metformin SR over metformin

Metformin SR offers advantages compared to regular metformin. These include; 1. Reduced frequency of dosing; Metformin SR is typically taken twice a day, whereas regular metformin is usually taken two or three times a day. This makes it more convenient and easier to remember to take the medication as prescribed. 2. Occurrence of side effects; Metformin SR may result in fewer gastrointestinal side effects like nausea, diarrhea, and stomach discomfort than regular metformin. This is due to the more gradual release of metformin in the body, which reduces irritation in the stomach and intestines. 3. Enhanced blood sugar management; Metformin SR offers consistent and sustained blood sugar reduction, particularly during nighttime and early morning hours when fluctuations can be challenging to control. Minimizing these fluctuations decreases the risk of hypoglycemia ( blood sugar) and the potential for improved long-term outcomes. These factors make Metformin SR an attractive option for individuals seeking a formulation with potentially improved convenience, tolerability, and effectiveness in managing blood sugar levels.

Drawbacks of metformin SR over metformin

Metformin SR may also have drawbacks when compared to regular metformin. These include; 1. Higher cost; Depending on the brand and insurance coverage Metformin SR might be more expensive than Metformin. However, you can opt for versions of both types, which could help lower the cost. 2. Limited dosage options; Metformin SR is available in strengths and sizes compared to regular metformin. This limitation might affect the flexibility and customization of your treatment plan. For example, doses of 500 mg are not available for Metformin SR, whereas regular metformin offers doses as low as 250 mg. 3. Tablet residue; Metformin SR tablets have a special coating that enables them to release the medication slowly over time. However, this coating may not dissolve completely. It could leave some residue in your stool. It's important to note that this is normal and doesn't impact the effectiveness of the medication; nevertheless, it might be. Perplexing for specific individuals.

How to choose between metformin SR and metformin

When choosing between metformin SR and regular metformin, there are factors to consider. These include the individual's blood sugar levels and goals their personal preferences and lifestyle, how they tolerate and respond to medications, well as the availability and affordability of the drug. To determine which type of metformin is most suitable for someone with type 2 diabetes, it is best to consult a doctor. A doctor can assess their condition, prescribe the dosage and frequency, monitor their blood sugar levels, and make any necessary adjustments, to the treatment plan.

XII. Important Precautions

The risk of acidosis and the need for monitoring are essential considerations when using metformin. Lactic acidosis is a serious metabolic complication that can occur due to the buildup of metformin in the body. It is crucial to identify this condition by regularly monitoring blood lactate levels and observing any clinical symptoms. Although metformin has generally been found to have benefits, caution should be exercised in patients with conditions that increase the risk of low oxygen levels and subsequent lactic acidosis, such as congestive heart failure. To optimize the glycemic control effects of metformin and minimize adverse effects, patients should be advised to maintain a consistent and balanced diet that avoids excessive consumption of carbohydrates and alcohol.

XIII. Administration to Specific Populations

When it comes to patients, it is essential to be cautious and start with lower doses due to their higher likelihood of having decreased kidney function. Regularly monitoring their kidney function and adjusting the dosage as needed is crucial. The safety of using metformin during pregnancy has not been fully established for women and nursing mothers. Based on animal studies, it is currently classified as a Category B drug, which means there is no proven risk in humans. However, insulin is generally preferred for controlling blood glucose in women. In terms of children, there haven't been controlled clinical studies on using Metformin SR in pediatric populations. Therefore its use is not recommended for children. We cannot determine its safety and effectiveness for them.

XIV. Overdosage

Signs and Symptoms of Overdose Experiencing an overdose of metformin can lead to acidosis. Some signs that someone may have overdosed include feeling vomiting having diarrhea experiencing stomach pain, noticing a slow or irregular heartbeat feeling dizzy or extreme fatigue. Immediate Steps for Management Seeking medical attention is crucial if an overdose occurs. Treatment often involves hospitalization. This may include hemodialysis to eliminate the drug from the bloodstream. Long-term Care and Follow-up After the acute overdose episode has been resolved, it's essential to monitor the patient's kidney and liver function and overall metabolic health. Appropriate adjustments to therapy should be made if necessary.

XV. Storage Conditions for Metformin SR

Metformin SR should be kept at room temperature, away from heat and moisture. It is essential to handle it with care by avoiding exposure to humidity and storing it in its original container with a tight lid to prevent contamination. Patients should be aware that using metformin beyond its expiration date mentioned on the label may affect its effectiveness and safety. It is best to avoid doing so.

XVI. Conclusion

Key Points Summary; Metformin SR plays a role in managing type 2 diabetes. While it is generally safe and effective cautious use and monitoring are necessary due to side effects like lactic acidosis. Current Position in Treatment; Metformin SR remains a treatment option for type 2 diabetes as a first-line agent. Its efficacy, safety profile, weight properties, and potential cardiovascular benefits make it an essential medication. Emerging Research and Future Prospects; Ongoing studies explore the potential of metformin in areas ranging from anti-aging treatments to cancer prevention. These exciting findings suggest that this established medication might have even broader applications in the future.

Rated: 5.0 / 5 based on 5.0 customer reviews.

Posted by GUY on Nov 7, 2018 Verified Purchase

Medician works as attended

Good product.

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