Lantus (insulin glargine) is a long-acting insulin used to manage blood sugar levels in individuals with diabetes. Like any medication, it can come with side effects, some of which may require careful monitoring.

Common Side Effects:

1. Weight Gain: Patients may experience an average weight gain of up to 1.5 pounds (lb) in adults using Lantus.
2. Skin Reactions: This can include rashes, itching, and joint pain. In some cases, patients may develop lipodystrophy, a condition that alters how the body stores fat. Healthline Medical News Today.
3. Hypoglycemia: Low blood sugar is one of the most serious concerns. Symptoms can include sweating, trembling, anxiety, confusion, and difficulty concentrating. NHS GoodRx.
4. Gastrointestinal Symptoms: Some patients may face issues such as diarrhea or constipation, and general feelings of fatigue.

Serious Side Effects:

1. Severe Hypoglycemia: This can lead to fainting, seizures, and unconsciousness.
2. Low Potassium Levels: Known as hypokalemia, this can occur with insulin therapy and may necessitate monitoring.
3. Allergic Reactions: Severe allergic reactions to Lantus may occur, requiring immediate medical attention.
4. Muscle Weakness and Respiratory Issues: Some patients may report muscle weakness, fatigue, increased urination, irregular heartbeat, or even respiratory failure. GoodRx Medical News Today.

What to Watch For: When using Lantus, it’s essential to monitor blood sugar levels closely. Be aware of signs of hypoglycemia, and ensure that you have a plan in place to manage low blood sugar when it occurs. Patients should also keep an eye on their weight and be observant for any skin changes or allergic reactions. If any serious side effects, such as symptoms of severe low blood sugar or significant allergic reactions, arise, it is crucial to seek medical attention promptly.

For a more comprehensive overview of Lantus side effects, you can refer to these resources: GoodRx, Medical News Today, NHS.

Sources

The 8 Lantus Side Effects to Be Aware of - GoodRxLantus side effects: Common, mild, and serious side effectsSide effects of long-acting insulin - NHSLantus Side Effects: Common, Severe, Long Term - Drugs.comInsulin glargine, recombinant (subcutaneous route) - Mayo ClinicLantus (insulin glargine): Side effects, dosage, cost, and moreLantus: Side Effects and How to Manage Them - Healthline

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