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Do I need a prescription to order Metformin?
Metformin is a prescription medicine, so we need a valid prescription from your healthcare provider before your order can be filled. You can upload it at checkout, or you or your doctor can email it to service@canadianinsulin.com or fax it to 1-866-951-0118. If the prescription is missing, your order won’t be processed until we receive it.
What does the price of Metformin include?
Prices on Canadian Insulin are in US dollars (USD), and the price in the buy box covers one pack at the strength and pack size you select, multiplied by the number of packs you choose. Shipping is added at checkout and shown before you pay, and because metformin ships dry-packed, you can choose Standard or Express shipping. Orders of $300 or less shipped from Canada carry a $35 surcharge.
Which Metformin strength and quantity should I order?
Metformin is listed in two strengths: 500 mg tablets in packs of 100, 360 or 500, and 850 mg tablets in packs of 100 or 500. Choose the strength written on your prescription, then the pack size and number of packs that match the tablet count your prescriber authorized. Strength and pack size are separate choices, so check both before you add metformin to your cart.
How is Metformin shipped and how long does it take?
Metformin tablets don’t need refrigeration, so they ship dry-packed. Orders usually ship within 48–72 hours of processing, or up to 5 business days in peak periods. After your order ships, Express delivery takes 3–5 business days and Standard delivery takes 5–10 days. Customs checks or weather can occasionally add time.
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Convert glucose readings between mg/dL and mmol/L without changing the clinical value.
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HbA1c & eAG Calculator
Convert between HbA1c percentage and estimated average glucose using the ADAG relationship.
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HOMA-IR Calculator
Estimate insulin resistance from fasting glucose and fasting insulin values collected from the same blood draw.
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eGFR Calculator
Estimate kidney filtration using the 2021 CKD-EPI creatinine equation.
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About Metformin
Metformin is an oral diabetes medication used to help manage blood glucose in people with type 2 diabetes. You can buy metformin online and choose the tablet strength and quantity shown during ordering, then match those details to your clinician’s directions. Many customers also compare cash-pay totals, tablet counts, and US delivery from Canada when planning a continued supply.
Metformin is the generic name of the active ingredient. It may appear as immediate-release tablets or extended-release tablets, depending on the medicine being ordered. These forms are not automatically interchangeable, so the release type, strength, and quantity should all align with the treatment instructions you already follow.
Metformin Price and Cost: What Your Total Covers
The cost of metformin depends on three choices in the buy box: the strength (500 mg or 850 mg), the pack size, and the number of packs. Metformin is listed with Canada as the country of origin, and all prices are in US dollars (USD). Larger packs hold more tablets, so compare the tablet count, not only the pack price.
Shipping is added at checkout. Metformin can ship Standard or Express. Orders of $300 or less shipped from Canada carry a $35 surcharge. If your total is different from your last order, it’s usually because the strength, pack size or shipping method changed. See our shipping page for full rates and details.
How to Order Metformin Online
Before you order, have your prescription, your doctor’s contact details and a Visa or Mastercard ready.
- Sign in or create a free account.
- Choose your strength, pack size and number of packs in the buy box, and add metformin to your cart.
- Complete checkout and upload your prescription. You can also email it to service@canadianinsulin.com, or your doctor can email or fax it to 1-866-951-0118.
- You’ll receive a confirmation email once your order is placed.
Prefer to order by phone? Call 1-844-560-7790. See how to order for every ordering option.
Metformin Strengths and Pack Sizes Available
| Strength | Pack size | Country of origin |
| 500 mg tablets | 100 tablets | Canada |
| 500 mg tablets | 360 tablets | Canada |
| 500 mg tablets | 500 tablets | Canada |
| 850 mg tablets | 100 tablets | Canada |
| 850 mg tablets | 500 tablets | Canada |
These are immediate-release metformin tablets. If your prescription is for extended-release metformin, see Glumetza.
How Metformin Is Taken
Metformin is a tablet taken by mouth with meals, following the schedule your prescriber sets. Taking it with food helps reduce stomach upset. Your prescriber decides your strength and whether it changes, so don’t change how you take it unless they tell you to.
Store the tablets at room temperature in their original container, out of reach of children.
What Metformin Is Approved For
Metformin is a biguanide. Alongside diet and exercise, it is approved to improve blood sugar control in adults and children aged 10 and older with type 2 diabetes. It is not used to treat type 1 diabetes or diabetic ketoacidosis.
To learn more, read about the 3 P’s of diabetes and swollen feet and weeping legs in diabetes. If you’re comparing treatments, see Jardiance vs metformin.
Metformin Safety Information
Metformin has a boxed warning about lactic acidosis, a rare but serious buildup of lactic acid in the blood. Get medical help right away if you have unusual muscle pain, trouble breathing, unusual sleepiness, stomach pain with nausea or vomiting, or feel very weak or cold.
Don’t take metformin if you have severe kidney problems, metabolic acidosis or diabetic ketoacidosis, or if you’re allergic to metformin. Tell your healthcare provider about kidney or liver problems, heart failure, heavy alcohol use, and any upcoming surgery or X-ray with contrast dye.
The most common side effects are diarrhea, nausea or vomiting, gas, weakness, indigestion, stomach discomfort and headache. Other effects listed on the label include low vitamin B12 levels over time, and low blood sugar when metformin is taken with insulin or a sulfonylurea. This isn’t a complete list. See the Metformin Drug Information from MedlinePlus for full details.
How Metformin Compares to the Other Options in Its Class
Metformin is a biguanide taken as an immediate-release tablet. Glumetza contains metformin in an extended-release tablet, and Repaglinide is a meglitinide, a different class of tablet that works on insulin release.
These medicines have their own approved uses, strengths and labels, and they aren’t interchangeable. Your prescriber decides which one fits your treatment. Browse all type 2 diabetes medications.
This content is for informational purposes only and is not a substitute for professional medical advice.
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USI didn’t receive it!
Paid for the dr visit. Paid for the medicine. Nothing arrived. Please look into that.
CanadianInsulin.com
Hi Alexandra,We apologize for the inconvenience you've experienced with your order. Ensuring you receive your medication promptly is very important to us, and we regret that this has not been your experience.A member of our team will reach out to you shortly to investigate and resolve this issue. Your satisfaction is our priority, and we appreciate your patience as we work to address this matter.Thank you for bringing this to our attention.
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Do I need a prescription for Metformin?
Yes. Metformin is a prescription medicine, and we need a valid prescription before your order can be filled. Upload it at checkout, or have your doctor email it to service@canadianinsulin.com or fax it to 1-866-951-0118. If you prefer, we can also contact your clinic to request the prescription.
Why does my Metformin total change between orders?
Your total depends on the strength, the pack size, the number of packs, the country of origin and the shipping method you choose. All prices are in US dollars (USD). If any of these change, your total changes too. Orders of $300 or less shipped from Canada carry a $35 surcharge.
Is Metformin the same as the generic?
Metformin is the generic name of the medicine. The tablets we list are immediate-release metformin sourced from Canada, and our product listing names Teva as the manufacturer. Generic metformin from other makers contains the same active ingredient, but tablets can look different, so ask your pharmacist if you have questions about switching.
How long does delivery take?
Orders usually ship within 48–72 hours of processing. After your order ships, Express delivery takes 3–5 business days and Standard delivery takes 5–10 days. We’ll email you a tracking number when it ships, and extra customs checks can sometimes add time. See our shipping page for full details.
Can I speak to someone before ordering?
Yes. Call us toll-free at 1-844-560-7790, email service@canadianinsulin.com, or start a live chat with our customer service team from our contact page. We’re available Monday to Friday 7am–11pm, Saturday 7am–7pm and Sunday 8am–5pm EST. Outside those hours, send us a message or an email and our team will pick it up when we open.
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