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Glucophage® Tablets for Type 2 Diabetes
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Glucophage® is a brand of metformin used to help manage type 2 diabetes. It supports blood sugar control alongside diet and activity plans. Accessing Canadian rates with US delivery from Canada may be helpful if paying without insurance.
What Glucophage Is and How It Works
YouDrugstore is a licensed Canadian pharmacy in Manitoba. Pharmacists review prescriptions before dispensing.
This medicine belongs to the biguanide class. It lowers glucose production in the liver and helps the body use insulin more effectively. The result can be improved fasting and post-meal blood sugars when taken as directed. It does not replace the need for healthy eating or routine exercise plans.
The Metformin generic is therapeutically equivalent to the brand when prescribed by a clinician. The treatment is often used alone first, and may be combined with other oral agents or insulin when additional control is needed. It is not indicated for type 1 diabetes or diabetic ketoacidosis.
To learn more about the condition it treats, see Type 2 Diabetes and browse related care in Diabetes Care.
Who It’s For
This medicine is indicated to improve glycemic control in adults with type 2 diabetes as part of a comprehensive plan that includes nutrition and activity. Some pediatric patients may be eligible per official labeling; clinicians determine suitability. It may be prescribed alone or with other agents, including insulin.
People with severe kidney impairment, acute or chronic metabolic acidosis, or known hypersensitivity to components should avoid this therapy. Those with significant liver disease, unstable heart failure, severe dehydration, or heavy alcohol use may require alternative approaches. The prescriber will review risks and benefits based on medical history, labs, and current medicines.
Dosage and Usage
Follow the prescribed schedule on the label. Many patients start at a low dose and increase gradually to reduce stomach upset. Taking tablets with meals can improve tolerance. Extended-release versions are taken once daily with an evening meal for many patients. Swallow tablets whole; do not crush or chew extended-release products.
If the label lists Metformin HCl tablet 500 mg as a starting strength, the clinician may adjust over time based on response and lab results. Always follow the official prescribing information and your prescriber’s guidance. If unsure how to take a dose, consult your healthcare professional before making changes.
Strengths and Forms
Availability may vary by manufacturer and region. Common presentations include the following:
- Immediate-release tablets: 500 mg, 850 mg, 1000 mg
- Extended-release tablets: Glucophage XR 500mg, 750 mg, 1000 mg
Immediate-release is often taken once or twice daily with meals. Extended-release is designed for once-daily use with the evening meal for many patients. Your prescriber will determine which form aligns with your regimen and goals.
Missed Dose and Timing
If a dose is missed, take it when remembered unless it is close to the next scheduled time. If it is near the next dose, skip the missed tablet and return to the regular schedule. Do not take two doses at once. Keeping a consistent routine and pairing doses with meals can help adherence. Using a weekly pill organizer or reminder app may also assist.
Storage and Travel Basics
Store tablets at room temperature in a dry place away from humidity. Keep them in the original, child-resistant container and out of reach of children and pets. Avoid storing in a bathroom where moisture can accumulate. Do not use tablets that are damaged, discolored, or past the expiry date.
For travel, carry medicine in original packaging with the prescription label. Pack extra tablets in case of delays, and keep them in carry-on luggage to avoid extreme temperatures. When crossing time zones, maintain the same interval between doses as directed by your prescriber. If you need documentation for security screening, ask the pharmacy team during checkout.
Benefits
This therapy is a first-line option for many adults with type 2 diabetes. It can reduce fasting and post-meal glucose and contribute to A1C improvement when taken as prescribed. It is generally weight-neutral and has a low risk of hypoglycemia when used alone. Extended-release tablets may improve stomach tolerance in some patients and simplify once-daily routines.
Side Effects and Safety
Common side effects may include:
- Stomach upset or cramps
- Nausea or vomiting
- Diarrhea or loose stools
- Gas or bloating
- Metallic taste
Rare but serious lactic acidosis has been reported and requires urgent medical attention. Risk may increase with kidney problems, advanced liver disease, dehydration, sepsis, or heavy alcohol use. Vitamin B12 levels may decline over long-term use; periodic monitoring may be considered. When used with insulin or sulfonylureas, the risk of hypoglycemia can increase; prescribers will advise on monitoring and support.
Drug Interactions and Cautions
Tell your clinician about all medicines, vitamins, and supplements. Iodinated contrast agents for imaging may require temporary changes per official guidelines. Excess alcohol can increase the risk of lactic acidosis and should be limited or avoided. Some drugs that affect kidney function or compete for renal tubular transport may alter levels. Carbonic anhydrase inhibitors and certain cationic drugs warrant extra caution. Always follow the label and your prescriber’s direction regarding holds or restart timing after procedures or illness.
What to Expect Over Time
With steady use and routine meals, many patients notice improved fasting and post-meal readings over weeks. The extended-release form may help reduce stomach side effects for some. A1C changes are assessed over months at regular visits. If additional control is needed, prescribers may add other agents while continuing metformin. Dosing can vary widely; some patients take Metformin 1 g per day or more as directed, while others remain at lower doses based on response and tolerance. Ongoing lifestyle measures remain essential.
Compare With Alternatives
Some people may need alternative or add-on therapies. DPP-4 inhibitors are an option; see Sitagliptin for once-daily dosing without injections. An alpha-glucosidase inhibitor can delay carbohydrate absorption; see Acarbose for a different meal-time approach. Your prescriber can advise which class aligns with your goals, kidney function, and tolerance.
Pricing and Access
Canadian pharmacy sourcing can help many patients compare options for their budget. The Glucophage price may differ by strength, pack size, and manufacturer. Those tracking a Metformin cash price can review live listings at checkout, then ask a prescriber if generics suit their plan. Ships from Canada to US so patients can access Canadian pricing with transparent fees. For current coupons and seasonal offers, see Promotions. Encrypted checkout helps protect sensitive information during payment.
Availability and Substitutions
Stock can vary by strength and release type. If a specific tablet is not available, a prescriber may recommend a therapeutically equivalent generic or a different release form. Pharmacists can coordinate with your clinician on appropriate substitutions according to the prescription. A valid prescription is required and verified before dispensing.
Patient Suitability and Cost-Saving Tips
Good candidates often include adults with type 2 diabetes who need foundational therapy as part of a broader plan. People with severe renal impairment or a history of lactic acidosis are not appropriate candidates. Those with stomach sensitivity may benefit from extended-release tablets taken with an evening meal, per label.
To manage costs, consider multi-month fills when appropriate, which may reduce per-tablet pricing and fewer co-pays or fees. Set refill reminders so therapy is not interrupted. Review strengths with your prescriber to avoid unnecessary splitting or multiple tablets per dose. For nutrition support, some patients use diabetes-formulated shakes; see Glucerna for options to discuss with a clinician.
Questions to Ask Your Clinician
- Starting plan: which strength and release type fit my goals?
- Stomach tolerance: how should I take tablets with meals?
- Monitoring: how often should labs and B12 be checked?
- Combinations: which add-on agents align with my risks?
- Procedures: what to do before contrast imaging or surgery?
- Illness plans: how to handle dehydration or poor intake?
- Targets: what A1C and home glucose ranges are appropriate?
Authoritative Sources
DailyMed: Metformin HCl Tablets
FDA Prescribing Information: Metformin
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What is the difference between immediate‑release and extended‑release tablets?
Immediate‑release tablets are usually taken once or twice daily with meals, while extended‑release tablets are designed for once‑daily use, often with the evening meal. Both contain metformin, but the extended‑release matrix slows absorption to support stomach tolerance and convenience. The choice depends on your treatment plan, side‑effect profile, and how many daily doses fit your schedule. Your prescriber will decide which form aligns with your goals and lab results.
How should this medicine be taken with meals to reduce stomach upset?
Many patients take tablets with breakfast and dinner, or an evening meal for extended‑release, to reduce nausea and loose stools. Adding food can lessen irritation of the gut lining. Start low and increase gradually as advised on the label can also help tolerance. If symptoms persist, your clinician may adjust the schedule or switch to a different release type. Do not crush or chew extended‑release tablets.
Which side effects are most common and how are they managed?
Gastrointestinal effects such as nausea, diarrhea, gas, and stomach cramps are most common, especially during the first weeks. Taking tablets with meals, titrating slowly per label, and considering the extended‑release version can improve tolerance. Metallic taste may occur but often lessens over time. If severe symptoms develop, or if you have signs of dehydration or lactic acidosis, seek medical care immediately.
Can vitamin B12 levels be affected with long‑term use?
Metformin can lower vitamin B12 levels in some patients over time. Your clinician may check levels periodically, especially if you have anemia, neuropathy symptoms, or dietary risk factors. If a deficiency is found, diet changes or supplementation may be recommended. Do not start supplements without discussing with your healthcare professional, as medication and lab context guide management.
Is it safe to combine metformin with insulin or other diabetes medicines?
Metformin is often combined with other agents, including insulin, sulfonylureas, SGLT2 inhibitors, DPP‑4 inhibitors, or GLP‑1/GIP medicines, when additional control is needed. The combination can increase hypoglycemia risk with insulin or sulfonylureas, so your clinician may recommend closer monitoring and education on recognizing low blood sugar. Never change doses on your own; follow the plan set by your prescriber.
What should I know about alcohol while taking metformin?
Excessive alcohol intake raises the risk of lactic acidosis with metformin, especially in the setting of dehydration, liver disease, or poor kidney function. Avoid binge drinking and limit alcohol according to medical guidance. If you become acutely ill or cannot keep fluids down, contact your clinician for instructions. Always review alcohol use during medication reviews so your prescriber can advise safely.
Do I need to stop metformin before imaging with contrast dye?
Iodinated contrast agents for certain imaging procedures can affect kidney function. Depending on your kidney status and the type of study, your clinician may advise holding metformin before and after the procedure. Follow the exact timing on the label and the radiology team’s instructions. Resume only when your prescriber confirms it is safe, typically after kidney function is reassessed.

