Lantus (Insulin Glargine)

Prescription medicineOnly Available By Prescription

What if I find a lower price with another pharmacy?

We guarantee the lowest price on all of our prescription products. If you find your medications cheaper at any other recognized licensed mail order pharmacy, we will not only match their price, we will beat it by 25% of the difference. It is our 125% price match guarantee!

Example: If you find a product on Canada Drugs Direct for $50.00 and find the same product for $40.00 at another mail order pharmacy, we will provide you with a $12.50 discount, bringing your total to $37.50.

To get the discount please make sure to mention the price match to the customer service team when they call to collect payment for your order. Or call toll free at 1-888-904-8467 to place the order through the phone.

Terms & Conditions of Program

  • Guaranteed lowest price is only valid at the time of sale.
  • We will only match the current advertised price.
  • Products must be identical and in stock at the time of placing an order with a licensed mail order pharmacy. They must be an online Canadian pharmacy with an address in Canada.
  • Products must be authentic in brand and size (same manufacturer, same country of manufacture, same pack size, same strength and same quantity).
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  • Price match can only be issued over the phone with our customer service team. Please note at this time we cannot offer price matching for the products Ozempic or Saxenda.
What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.

Description

LANTUS (insulin glargine) is a medication prescribed to treat patients with type 1 and type 2 diabetes mellitus. People with diabetes have blood sugar levels that are too high because they do not produce enough insulin, or they have a resistance to insulin. LANTUS and other insulin products return high blood sugar levels to normal.

Fact Table

Formula

C267H404N72O78S6

License

US FDA

Bioavailability

~60%

Legal status

Prescription only (Rx-only)

Chemical Name

Insulin Glargine

Elimination half-life

~12 hours (clinical duration up to 24 hours)

Dosage (Strength)

100 units/mL (U-100), typically 3 mL or 10 mL vials or prefilled pens

Pregnancy

Consult a doctor (Category C)

Brands

Lantus, Basaglar, Toujeo

Protein binding

Low (minimal binding)

PubChem CID

16129678

MedlinePlus

a699001

ChEBI

86338

ATC code

A10AE04

DrugBank

DB00047

KEGG

D04557

Routes of administration

Subcutaneous injection

Directions

Inject LANTUS insulin once daily as directed by the physician. 

Rotate injection sites to avoid side effects like lipodystrophy and injection site reactions.

Ingredients

LANTUS contains insulin glargine, which is a type of insulin that has been modified to be long-acting. LANTUS lasts for about 24 hours in most people and can be injected once daily.

LANTUS should not be used as meal-time insulin.

Interactions

Tell your doctor or pharmacist if you are taking any of the following medications. They can affect blood sugar, and the dose of LANTUS may need to be adjusted:

  • Alcohol
  • Atypical Antipsychotics
  • Beta-blockers
  • Clonidine
  • Corticosteroids
  • Disopyramide
  • Diuretics
  • Estrogens/Progesterones
  • Fibrates
  • Fluoxetine
  • Isoniazid
  • Lithium
  • Monoamine Oxidase Inhibitors (MAOIs)
  • Niacin
  • Oral antidiabetic agents
  • Pentoxifylline
  • Phenothiazine derivatives
  • Pramlintide
  • Propoxyphene
  • Protease inhibitors
  • Salicylates
  • Somatostatin Analogues
  • Somatropin
  • Sulfonamide Antibiotics
  • Sympathomimetic agents
  • Thyroid replacement medication

Cautions

Store LANTUS in the refrigerator (36°F-46°F [2°C-8°C]) before opening. Once a vial is opened, it can be kept at room temperature for 28 days and then discarded. For LANTUS pens, several come in a box, and only one should be opened at a time. They can also be stored at room temperature for 28 days after opening.

Only change the dosage of LANTUS under close medical supervision.

Changes in medication, meals, physical activity, and other medical conditions may change your insulin needs.

Side Effects

LANTUS insulin may have the following side effects:

  • Allergic reactions
  • Edema
  • Hypoglycemia
  • Injection site reactions
  • Lipodystrophy
  • Pruritis
  • Rash
  • Weight gain

References

Lantus [package insert] Bridgewater, NJ: Sanofi-Aventis; 2018


Frequently Asked Questions about Lantus (Insulin Glargine)


When does Lantus start working and how long does it last?

Lantus begins working within 1 to 2 hours after injection and maintains a steady effect for about 24 hours. It has no peak, which helps reduce the risk of hypoglycemia between meals or overnight.


Can I use Lantus with other diabetes medications?

Yes. Lantus is often used in combination with:

Rapid-acting insulin for mealtime coverage (especially in type 1 diabetes)
Oral medications like metformin, sulfonylureas, or DPP-4 inhibitors in type 2 diabetes

Always coordinate combinations under a doctor’s supervision.


What happens if I inject Lantus into a muscle instead of under the skin?

Injecting into a muscle (intramuscularly) can cause faster absorption, increasing the risk of low blood sugar. Lantus is formulated for subcutaneous use only — inject into fatty tissue, not muscle.


Can I drink alcohol while using Lantus?

Alcohol can affect blood sugar levels, potentially causing hypoglycemia, especially when taken on an empty stomach. It’s best to limit alcohol intake and monitor blood sugar more frequently if you drink.


What should I do if I accidentally inject too much Lantus?

Seek medical attention immediately. An overdose can lead to severe hypoglycemia, which may cause symptoms like dizziness, confusion, seizures, or unconsciousness. Keep fast-acting carbs (e.g., glucose tablets, juice) available.


Can Lantus be used in children?

Yes, but with limitations. Lantus is approved for use in:

Children =6 years old with type 1 diabetes
Adults with type 2 diabetes (not approved for children with type 2)

Pediatric dosing requires careful monitoring.


Are there generic or biosimilar versions of Lantus?

Yes. Insulin glargine is available as:

Basaglar – a follow-on biologic
Semglee – an interchangeable biosimilar approved by the FDA

These provide similar effectiveness at a potentially lower cost.


Can Lantus be injected in the same spot every day?

No. Repeatedly injecting into the same spot can cause lipodystrophy (fatty tissue changes) which may interfere with insulin absorption. Rotate injection sites within the same general area (abdomen, thigh, upper arm).


Is Lantus affected by exercise?

Yes. Physical activity increases insulin sensitivity and can lower blood glucose, raising the risk of hypoglycemia. Monitor levels before and after exercise, and consider adjusting food intake or insulin dose as advised by your doctor.


What devices can I use to inject Lantus?

Lantus is available in:

SoloStar prefilled pens
Vials for use with insulin syringes

The pen option is often preferred for ease, precision, and convenience. Always follow proper usage instructions for the chosen device.

IMPORTANT NOTE: The information provided above is for general awareness and educational purposes only. It is not intended to diagnose, treat, or replace professional medical or veterinary advice. Always consult your physician, pharmacist, or veterinarian regarding the safety, suitability, and proper use of any medication for yourself or your pet.

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