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Lantus U is a long-acting basal insulin (insulin glargine) that provides steady background insulin coverage for up to 24 hours. It works by binding to insulin receptors throughout the body, enabling cells to absorb glucose from the bloodstream and suppressing the liver from releasing excess glucose, resulting in more stable fasting and between-meal blood sugar levels.

Lantus U is typically injected subcutaneously once daily, at the same time each day. Your prescribing physician will determine the appropriate dose and injection site based on your individual needs and blood sugar readings. Do not adjust your dose without consulting your provider.

If your dose was recently adjusted by your managing physician, please mention this during your Doctronic evaluation. Our physicians will review your current regimen before issuing a refill and may ask for recent blood glucose logs to ensure the refill reflects your current prescribed dose.

Regular self-monitoring of blood glucose is recommended for all patients on insulin therapy. Your provider may recommend fasting glucose checks each morning as well as periodic HbA1c testing (typically every 3 months) to assess overall glycemic control. A continuous glucose monitor (CGM) may also be appropriate for some patients.

The most common side effect of Lantus U is hypoglycemia (low blood sugar), which can cause shakiness, sweating, confusion, and dizziness. Injection site reactions such as redness, swelling, or itching may also occur. Weight gain is a known effect of insulin therapy. Contact your provider or seek emergency care if you experience severe hypoglycemia.

Unopened Lantus U pens or vials should be stored in the refrigerator (36 to 46 degrees Fahrenheit). Once opened, they may be kept at room temperature (below 86 degrees Fahrenheit) for up to 28 days. Do not freeze Lantus U or expose it to direct heat or light, and never use insulin that appears cloudy or discolored.

Doctronic uses an AI-powered evaluation to gather detailed information about your symptoms, medical history, and current medications. A licensed physician then reviews your information, confirms the appropriateness of the refill, and issues a treatment plan or prescription. The entire process is designed to be fast, thorough, and convenient.

Yes. Doctronic is a HIPAA-compliant telehealth platform staffed by licensed physicians. All prescribing decisions are made by qualified doctors, and clinical processes are regularly audited to ensure patient safety. Doctronic is available to adults 18 and older in any U.S. state.