Lantus® (insulin glargine) 100 units/mL Vial for Diabetes

What Lantus® Is and How It Works

Lantus® (insulin glargine) is a long-acting basal insulin for adults and children with type 1 diabetes and for adults with type 2 diabetes. It is supplied as a 100 units/mL solution in a 10 mL vial, given by subcutaneous injection once daily at the same time each day. Many shoppers compare prices for Lantus Vial without insurance to manage ongoing treatment costs.

YouDrugstore is a licensed Canadian pharmacy in Manitoba that meets Canadian pharmacy standards. Prescriptions are reviewed by licensed pharmacists before dispensing, and our team is available to support safe use. We also offer brand and generic medicines at Canadian prices, plus OTC health products, with online ordering and friendly customer-service chat during posted hours.

We source through licensed, vetted international partner pharmacies to supply authentic brand medications at affordable prices and a wide selection.

Dosage and Usage

Lantus® is a basal insulin taken once daily. Dosing is individualized and guided by a prescriber. Typical use in type 1 diabetes includes a basal-bolus plan with rapid-acting insulin at meals. In type 2 diabetes, Lantus® may be started as basal insulin and adjusted based on fasting glucose and overall targets.

• Use U-100 insulin syringes to draw the prescribed dose from the vial.
• Inspect the solution. It should be clear and colorless with no particles.
• Inject subcutaneously in the abdomen, thigh, upper arm, or buttock.
• Rotate injection sites to reduce lipodystrophy and skin irritation.
• Do not mix or dilute Lantus® in the same syringe with other insulins.
• Follow the care plan for dose changes and blood glucose monitoring.

Missed dose: follow the plan provided by the prescriber. Do not double a dose. Check blood glucose more often, and contact the care team for advice if needed.

Storage and travel:

• Store unopened vials in a refrigerator (2–8 °C). Do not freeze.
• After first use, a vial can be kept at room temperature below 25 °C for up to 28 days, or refrigerated. Keep away from heat and light.
• Do not use insulin that was frozen or overheated.
• When you travel, keep your insulin with you in an insulated pouch. Pack backup supplies and a copy of your prescription.
• Use a sharps container for used needles and syringes.

Benefits and Savings

Lantus® provides steady 24-hour background insulin with no pronounced peak. This supports more stable fasting blood glucose and reduces overnight swings. Many patients find once-daily dosing easier than intermediate-acting options. Vials offer dosing flexibility for small adjustments and for varied daily needs.

Ordering from a licensed Canadian pharmacy can lower the monthly spend. Many customers save 60–80% versus typical US prices, which helps those paying without insurance. You can shop online or by phone and use customer-service chat during posted hours for ordering support.

Side Effects and Safety

• Common: hypoglycemia (shakiness, sweating, hunger, headache), injection site redness or discomfort, lipodystrophy, mild edema, and weight gain.
• Less common: allergic reactions (rash, itching), blurry vision with rapid glucose shifts, and sodium retention.
• Serious: severe hypoglycemia, severe allergy (hives, swelling, trouble breathing), and hypokalemia. Seek urgent care for severe reactions.
• Drug considerations: thiazolidinediones may increase fluid retention; beta-blockers may mask hypoglycemia; alcohol can increase hypoglycemia risk.
• Do not use for diabetic ketoacidosis. Use rapid-acting insulin and medical care for DKA.

This summary does not replace guidance from a prescriber. Review the full patient information and follow the individualized plan.

Onset Time

Lantus® starts working about 1–2 hours after injection. It has a flat activity profile with minimal peak and lasts up to 24 hours in most patients. Some individuals may see slightly shorter or longer duration. Dose timing should remain consistent day to day.

Compare With Alternatives

Lantus® vs intermediate-acting NPH: NPH (e.g., Novolin® Ge Nph Penfill Cartridge) peaks several hours after injection and may require twice-daily dosing. Lantus® offers more stable basal coverage and fewer nocturnal hypoglycemia episodes in many patients.

Lantus® vs other basal insulins: Basaglar® and Semglee® are insulin glargine products similar in dosing and effect. Toujeo® (insulin glargine U-300) is a concentrated glargine with a longer, flatter profile. Dose conversions and adjustments require prescriber oversight.

Vial vs cartridges/pens: Some prefer vials for precise small doses or for use with syringes. Others choose cartridges or prefilled pens for convenience. For pen-compatible options, see Lantus® Cartridges or rapid-acting mealtime coverage such as Humalog® Kwikpen as part of a basal-bolus plan.

Combination Therapy

Lantus® is often combined with mealtime rapid-acting insulin (e.g., insulin lispro) in type 1 diabetes. In type 2 diabetes, it may be used with oral agents like metformin or with GLP-1 receptor agonists to improve control while limiting weight gain. Dose changes should be supervised. Do not mix Lantus® with other insulins in the same syringe.

Patient Suitability and Cost-Saving Tips

Suitable candidates include adults with type 2 diabetes needing basal insulin and people with type 1 diabetes who require a long-acting basal insulin. It is not indicated for DKA treatment. Patients with a history of severe hypoglycemia should use extra monitoring, especially during dose changes and illness.

Cost-saving tips:

• Order multi-month supplies when appropriate to lower per-month cost.
• Watch for bulk promotions on vials and related supplies.
• Set up reorder reminders so you do not run out unexpectedly.
• Compare vial versus cartridge/pen formats to match dose needs and budget.

For current offers and bulk options, see our Lantus Vial coupon. Those paying out of pocket or Lantus Vial no insurance shoppers may see meaningful savings versus typical US pharmacy cash prices.

For condition education, explore Diabetes and recognize low blood sugar signs in Hypoglycemia. If you are comparing basal insulin with newer incretin therapies, you may find our article Mounjaro Dosage Beginners Guide To Dosing helpful.

Authoritative Sources

Review the manufacturer information on the Lantus® product website, the Health Canada Drug Product Database, and the FDA Prescribing Information for Lantus®.

YouDrugstore offers brand and generic medications at Canadian prices, with pharmacist review of every prescription before dispensing. Order online with support from our team, and receive prompt, express, cold-chain shipping to protect temperature-sensitive medicines.

This content is for general educational purposes and does not replace professional medical advice. Always follow the guidance of your prescriber and the official patient information for your medication.