Lantus® Cartridges for Basal Insulin Control

What Lantus® Is and How It Works

Lantus® cartridges contain insulin glargine U-100, a long-acting basal insulin. It helps control fasting and between-meal blood sugar for people with diabetes. You can order from Canada with US delivery from Canada, often at Canadian pricing that many pay cash without insurance.

CanadianInsulin is a prescription referral service. We verify your prescription with your clinic, and licensed Canadian pharmacies dispense your order.

Lantus is designed for steady, 24-hour coverage in many patients. It forms micro-precipitates under the skin and releases small amounts of insulin over time. That supports a stable background level, with less pronounced peaks compared with many other insulins.

If you are comparing long-acting options, browse our Long Acting Insulin Cartridges. For a deeper overview, see our guide Lantus® Insulin Cartridge.

Who Lantus Is For

Lantus is indicated for adults with type 1 or type 2 diabetes who need basal insulin. It is also used in pediatric patients with type 1 diabetes when a long-acting insulin is appropriate. Your clinician decides if this product suits your plan.

Do not use Lantus during episodes of low blood sugar. Do not use it in an insulin pump or for intravenous use. Avoid it if you have had a severe allergy to insulin glargine or other ingredients in the formulation.

Dosage and Usage

Lantus is injected once daily at the same time each day, or as directed by your clinician. For type 1 diabetes, it is used with rapid-acting insulin at meals. For type 2 diabetes, many people start basal insulin when oral therapies are not enough.

Common initiation approaches include a fixed once-daily starting dose or a weight-based starting dose. Your clinician will set the safest plan for you. Dose adjustments typically occur over days to weeks based on fasting blood sugar targets and monitoring.

Inject subcutaneously in the abdomen, thigh, or upper arm. Rotate injection sites to reduce skin changes. Do not mix or dilute Lantus with other insulins. Mixing can alter the time-action profile and may cause unpredictable glucose control.

Strengths and Forms

Lantus cartridges are 100 units/mL. Each cartridge typically contains 3 mL. Packs often include multiple cartridges. Availability can vary by province or pharmacy.

Other Lantus presentations also exist, including vials and prefilled disposable pens. Your prescriber may choose a cartridge with a reusable pen or a prefilled pen based on dosing and dexterity needs.

Missed Dose and Timing

If you miss your usual time, take the dose when you remember, as long as it is not too close to your next scheduled dose. If it is close, skip the missed dose. Take the next dose at your usual time. Do not take two doses at once. Contact your clinician for personalized guidance if you miss more than one dose.

Storage and Travel Basics

Keep unopened cartridges refrigerated per the label. Do not freeze. If a cartridge has been frozen, discard it. Once in use, most Lantus cartridges can be kept at room temperature for up to 28 days. Protect from heat and direct sunlight. Always confirm specifics on the package insert for your lot.

For travel, store cartridges in the original carton to protect from light. Use an insulated pouch if you expect warm conditions. Keep insulin in your carry-on bag to avoid cargo temperature extremes. Our pharmacies use cold-chain handling when needed to maintain product quality in transit.

Pen Handling and Sharps Disposal

Use Lantus cartridges only with a compatible reusable insulin pen, as described in the patient leaflet. Before first use, review the pen’s instructions carefully.

• Wash and dry your hands before handling the pen and cartridge.
• Insert a new cartridge per your pen’s steps, then attach a new sterile needle.
• Prime the pen as instructed to ensure insulin flow before dosing.
• Dial the prescribed dose. Inject into subcutaneous tissue, not muscle or vein.
• Press and hold the injection button for the recommended count, then remove.
• Rotate injection sites to reduce lipodystrophy and skin irritation.

Dispose of used needles in an FDA-cleared sharps container. Do not throw loose needles into household trash. Your pharmacist or local health department can advise on sharps disposal options in your area.

If you are exploring pen options, see our category for Reusable Diabetic Cartridge Pen. For technique refreshers, read How To Use Insulin Pen.

Benefits

• Long-acting insulin coverage to support stable basal control.
• Once-daily dosing for simplicity in many treatment plans.
• Cartridge format enables reuse of a compatible pen body.
• May reduce nocturnal swings when titrated appropriately.
• Widely used as part of multi-dose insulin regimens.

Side Effects and Safety

• Low blood sugar, including shakiness, sweating, or confusion.
• Injection site reactions, such as redness or mild itching.
• Weight gain or fluid retention with insulin therapy.
• Lipodystrophy or skin thickening at injection sites.
• Mild rash, cough, or upper respiratory symptoms.

Serious effects are less common but require urgent care. These include severe hypoglycemia, significant allergic reactions, and low potassium. Contact a clinician if you notice unusual swelling, trouble breathing, or widespread rash. Hypoglycemia risk increases with missed meals, overdosing, alcohol, or activity changes. Keep a glucose source nearby. Talk with your clinician about glucagon rescue options; some patients carry Baqsimi Nasal Powder.

Drug Interactions and Cautions

• Other diabetes medicines can raise or lower insulin needs.
• Thiazolidinediones with insulin may increase fluid retention.
• Beta blockers may mask low blood sugar warning signs.
• Alcohol can increase or decrease blood sugar unpredictably.
• Systemic steroids, decongestants, and some antibiotics may raise glucose.
• Illness, stress, kidney or liver changes can alter insulin requirements.

Do not mix or dilute Lantus with any other insulin. Use only as subcutaneous injections. Keep consistent meal planning and glucose monitoring while titrating.

What to Expect Over Time

Many people notice steadier morning readings as the dose is optimized. You may still need rapid-acting insulin at meals for full control. Your clinician will review logs and adjust the plan to reduce highs and lows. Over time, insulin needs can change. Regular follow-up helps maintain safe, effective control.

Compare With Alternatives

Several long-acting insulins may be considered if your prescriber suggests a change. A closely related insulin glargine option is Basaglar® Cartridges. Another long-acting choice is Levemir® Penfill Cartridges. Some patients also discuss ultra-long insulin degludec with their clinicians. Your prescriber will guide selection based on goals, timing preferences, and insurance or cash-pay considerations.

Pricing and Access

Check our current Lantus cartridges price and compare your options. Many patients use Canadian pricing to lower their monthly insulin cost. We ship to the US from Canada with secure packaging. You can review price, place your order online, and upload your prescription for verification.

If you are new to our service, you can create an account, add your details, and request a refill when due. We support prompt shipping with tracking. Reach out to our team if you need help understanding product availability or switching to a comparable format.

Availability and Substitutions

Supply can vary by country and manufacturer schedules. If a specific pack size is not available, your prescriber may suggest a comparable long-acting insulin or a different presentation of the same medicine. If you prefer a prefilled pen, consider Lantus® Solostar Pens. Your clinic can advise on the best option for you and send an updated prescription if needed.

Patient Suitability and Cost Saving Tips

Lantus may suit people who want steady, once-daily basal insulin. It can be a fit for patients who use a reusable pen body and prefer cartridges. It is not suitable for people requiring an insulin pump infusion or for treating diabetic ketoacidosis.

• Discuss multi-month supplies with your clinician to reduce per-fill fees.
• Set refill reminders so you do not run out unexpectedly.
• Keep an updated prescription on file to avoid delays.
• Track your fasting readings to support efficient titration.
• Store backup cartridges properly to protect potency.

Questions to Ask Your Clinician

• How should I start and adjust my daily basal dose?
• Which injection sites are best for my routine?
• What are my fasting and pre-meal glucose targets?
• How should I manage sick days and dose changes?
• Do my other medicines affect my insulin needs?
• Should I keep glucagon on hand for severe lows?
• Is a cartridge pen or prefilled pen better for me?

Authoritative Sources

• FDA Label for Lantus
• DailyMed: Insulin Glargine Injection
• Health Canada Drug Product Database

Ready to Get Started

See your Lantus cartridges cost, upload your prescription, and arrange US delivery from Canada today. This information is educational and does not replace your clinician’s advice. Use Lantus only as directed by your prescriber and the official label.