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Lantus is a prescription long-acting insulin medication used to control high blood sugar in adults and children with diabetes mellitus. It’s typically taken once a day, at the same time each day, to provide consistent baseline insulin.
Lantus is a man-made form of insulin that's designed to mimic the body’s natural, background (basal) insulin. This is the type of insulin your pancreas would normally release in small, steady amounts throughout the day and night.
After it’s injected under the skin, Lantus forms tiny crystals that slowly dissolve, releasing insulin gradually over approximately 24 hours. Because it delivers a consistent level of insulin without a pronounced peak, it helps reduce the risk of blood sugar crashes (hypoglycemia).
You may qualify for Lantus if any of the following apply to you:
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Schedule a visit with a board-certified doctor at a time that works best for you.
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Receive quality care, from diagnosis and prescriptions to lab orders and more.
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Rest easy knowing that LifeMD is here for all your primary, urgent, and chronic health needs.
I believe virtual care expands access and allows me to support patients with the same compassion and clinical excellence as an in-person visit. My goal is always to meet patients where they are and guide them toward safe, personalized, sustainable health outcomes.
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Lantus may be right for you if you have type 1 or type 2 diabetes and need a reliable, long-acting insulin injection to help maintain baseline blood sugar between meals and overnight. Be sure to talk to your healthcare provider. They’ll review your A1C levels, daily glucose logs, lifestyle habits, and any side effects or challenges you’ve experienced with your current regimen.
Lantus (insulin glargine) is not right for everyone. While it can be a safe and effective treatment for many people with diabetes, there are some cases where it may not be appropriate.
Lantus may not be suitable for you if:
Yes, Lantus requires refrigeration when it is unused and unopened. Once opened, store Lantus in a dry cool place for up to four weeks.
Lantus and Basaglar are both long-acting insulins containing the same active ingredient (insulin glargine). While the two medications treat the same conditions, they are not interchangeable at the pharmacy.
Lantus should not be mixed or diluted with any other insulin or solution.
Weight gain can occur with any insulin therapy, Lantus included. To help maintain a healthy weight, follow a healthy diet and exercise regularly. Lantus may also be combined with GLP-1 medication, such as Wegovy® or Zepbound®, to help promote weight management. Be sure to speak to your healthcare provider to help determine whether combining Lantus with a GLP-1 medication may be right for you.
No, there isn’t a generic version of Lantus available.
The most common side effect of Lantus is low blood sugar (hypoglycemia). Symptoms of serious low blood pressure may include:
Please be sure to seek immediate medical attention if you experience these, or any other serious symptoms of low blood sugar.
Other possible side effects of Lantus may include swelling, weight gain, low potassium levels, and injection site reactions.
Yes! With LifeMD, you can connect with a licensed healthcare provider from the comfort of your home within an hour. If appropriate, your provider may prescribe Lantus and send it directly to your local pharmacy.
For even more flexibility, a LifeMD+ membership gives you 24/7 access to care, same-day prescription refills, exclusive wellness perks, and easy access to lab testing — all designed to make managing your health simple and stress-free.
Skip the waiting room. Join LifeMD and take control of your health today.
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