Lantus® SoloStar Pens for Diabetes

What Lantus® Is and How It Works

Lantus® SoloStar is a prefilled insulin pen containing insulin glargine 100 units/mL. It provides long-acting basal insulin to help stabilize fasting blood sugar across the day and night. CanadianInsulin ships from Canada to the US with prompt, express, cold-chain shipping, offering access to Canadian pricing that may lower out-of-pocket costs without insurance.

Every CanadianInsulin order is prescription-checked with your clinic and dispensed by a licensed Canadian pharmacy.

Insulin glargine is a human insulin analog. After subcutaneous injection, it forms microprecipitates that release small amounts of insulin over about 24 hours. The SoloStar pen delivers precise 1‑unit dose adjustments for flexible basal dosing. Lantus insulin glargine SoloStar pens are not for treating diabetic ketoacidosis, and they are not for intravenous use, insulin pumps, or mixing with other insulins.

Lantus provides basal insulin for adults with type 1 or type 2 diabetes, and for pediatric patients 6 years and older with type 1 diabetes. It is used once daily, at the same time each day, alongside mealtime insulin when required. These insulin glargine 100 U/mL pens are designed for everyday reliability and discreet use.

Who Lantus® Is For

Lantus SoloStar is indicated for:

• Adults with type 1 diabetes, with rapid-acting insulin for meals.
• Adults with type 2 diabetes who need a basal insulin.
• Children 6 years and older with type 1 diabetes.

It should not be used by people with known hypersensitivity to insulin glargine or any pen component. It is not appropriate for managing diabetic ketoacidosis. People with frequent hypoglycemia, severe liver or kidney impairment, or who take medicines that affect glucose should discuss risks with their clinician.

Dosage and Usage

Lantus is injected subcutaneously once daily at the same time each day. General approaches on the label include:

• Type 1 diabetes: Basal-bolus therapy. The Lantus dose is typically one-third to one-half of the total daily insulin dose, with the remainder as rapid-acting insulin at meals.
• Type 2 diabetes: Common starting doses include 0.2 units/kg once daily or 10 units once daily, then titrate to fasting glucose goals per clinician direction.

Adjustments are made over time based on blood glucose and clinical guidance. Do not mix Lantus with other insulins. Do not administer intravenously or in an insulin pump. Rotate injection sites within the same region to reduce skin changes. Never share your pen or needles.

Strengths and Forms

• Concentration: 100 units/mL.
• SoloStar pen volume: 3 mL per pen (300 units per pen).
• Common pack: 5 x 3 mL pens, often used for monthly supplies.
• Dose increments: 1 unit per click.

Availability may vary by pack size and supply. Lantus is also available in vials and cartridges in some markets. To compare devices within this format, explore our Insulin Pens category.

Missed Dose and Timing

If you miss a dose, take it as soon as you remember that day, then return to your regular schedule. If it is nearly time for the next dose, skip the missed dose. Do not take two doses at once. Check blood glucose more often after a missed dose and contact your healthcare team for specific guidance.

Storage and Travel Basics

• Unopened pens: Refrigerate at 36°F to 46°F (2°C to 8°C). Do not freeze. Keep in the original carton to protect from light.
• In-use pens: Store at room temperature below 86°F (30°C) for up to 28 days. Keep the cap on when not in use. Do not refrigerate an in-use pen. Do not expose to heat or direct sunlight.
• Disposal: After 28 days of use, discard the pen even if insulin remains.

For detailed handling, see our guide on Lantus Storage. When traveling, carry pens and supplies in an insulated case with gel packs, but avoid placing pens directly on ice. Keep insulin in your carry-on bag, not checked luggage. Bring spare needles, alcohol swabs, and a copy of your prescription. CanadianInsulin maintains cold-chain handling during transit to protect temperature-sensitive medicines.

Pen Handling and Sharps Disposal

• Wash hands. Inspect the pen label to confirm Lantus 100 units/mL.
• Attach a new sterile needle before each injection. Remove the outer and inner caps.
• Prime the pen: Dial 2 units, point up, tap the cartridge, and press the injection button until insulin appears.
• Dial the prescribed dose. Insert the needle into the recommended injection site.
• Press and hold the button fully. Keep the needle in the skin for at least 10 seconds, or as directed in the device instructions, to ensure a full dose.
• Remove and safely discard the needle after each injection. Recap the pen.

Dispose of used needles and empty or expired pens in an FDA-cleared sharps container or a heavy-duty puncture-resistant container per local rules. Never share pens or needles.

Benefits

• Once-daily basal insulin designed to cover approximately 24 hours.
• Steady, peakless profile that supports stable fasting glucose when titrated.
• Prefilled pen with 1-unit dosing increments for precise adjustments.
• Discrete, portable device for work, school, and travel.
• Compatible with standard pen needles widely used for insulin delivery.

Side Effects and Safety

• Common: Hypoglycemia, injection site redness or swelling, itching, rash.
• Other: Lipodystrophy or skin thickening at injection sites, edema, weight gain.

Serious effects include severe hypoglycemia, hypokalemia, and generalized allergic reactions. Fluid retention and heart failure can occur when insulin is used with thiazolidinediones. Seek urgent care for signs of severe low blood sugar or allergy. The risk of hypoglycemia increases when Lantus is combined with sulfonylureas or missed meals, excessive exercise, or alcohol intake.

Drug Interactions and Cautions

Medicines that may affect glucose control include corticosteroids, some diuretics, adrenergic agents, certain antipsychotics, protease inhibitors, and thyroid hormones. Others may enhance insulin effect, such as ACE inhibitors, ARBs, and some antidepressants. Beta blockers may mask symptoms of hypoglycemia like tremor or palpitations. Alcohol may raise or lower blood glucose. When adding or removing agents such as GLP-1 receptor agonists or SGLT2 inhibitors, your prescriber may reassess your insulin needs. Do not mix Lantus with other insulins or dilute it. Do not use in an insulin pump or intravenously.

What to Expect Over Time

Most patients see fasting glucose improve as the dose is titrated to target. Doses are adjusted in small steps, often over days to weeks, based on meter or CGM readings and clinical goals. Over time, your total daily insulin needs may change with weight, meals, stress, illness, or other medicines. Keep consistent timing day to day, and rotate injection sites to maintain skin health.

Compare With Alternatives

Several long-acting insulins are available if your prescriber recommends a different option. Basaglar® is another insulin glargine U-100 in a prefilled pen, used once daily for basal coverage. Tresiba® (insulin degludec) is an ultra-long-acting basal insulin available in FlexTouch pens. Toujeo (insulin glargine U-300) is a higher-concentration glargine for once-daily use; dose and pen devices differ from Lantus. To learn more, see our editorial comparisons such as Tresiba vs Lantus and What Is Toujeo.

Pricing and Access

See current Canadian pricing for Lantus SoloStar pens and compare the cost of 5 x 3 mL pen packs. US delivery from Canada is available with prescription verification. You can add Lantus SoloStar to cart, upload your prescription, and complete checkout through our encrypted checkout. If you are comparing options, review the price of insulin glargine 100 units/mL pens and check available pack sizes before you order. For occasional savings, visit our Promotions page.

Availability and Substitutions

Supply can vary by pack size and demand. If a specific Lantus SoloStar presentation is unavailable, your prescriber may recommend an alternative basal insulin such as Basaglar or Toujeo, with dose and pen training tailored to your plan. We do not provide restock dates; your care team can advise on the best interim option.

Patient Suitability and Cost Saving Tips

• Appropriate for adults with type 1 or type 2 diabetes who need basal insulin, and for children 6 years and older with type 1 diabetes.
• Not for DKA, pumps, or IV use. Not recommended for patients with insulin glargine hypersensitivity.
• Ask about multi-month supplies to reduce per-shipment costs and help maintain continuity.
• Use a consistent daily schedule and rotate sites to protect skin.
• Keep spare pen needles and a backup pen when traveling.
• Set calendar reminders for refills so you do not run out unexpectedly.

Questions to Ask Your Clinician

• What starting dose and titration plan should I follow for Lantus?
• How should I treat and prevent low blood sugar with my current medicines?
• What injection sites are best for me, and how often should I rotate?
• Could a GLP-1 or SGLT2 medicine be added with basal insulin?
• How should I handle missed doses, sick days, or changes in routine?
• Do any of my current medicines affect my blood glucose or mask lows?
• Is Lantus the best basal option for me compared with other long-acting insulins?

Authoritative Sources

• FDA Prescribing Information (Lantus)
• DailyMed: Lantus Insulin Glargine
• Health Canada Drug Product Database

Start your Lantus SoloStar pen purchase with US delivery from Canada.