The Lantus (Insulin Glargine) Side Effects, Information, What to Do Before Taking It and What To Avoid

Major side effects. As with any medication, there are several potential side effects associated with Lantus. Some side effects of Lantus are more serious than others. If you should experience any of the following major side effects while taking Lantus insulin glargine, contact your doctor right away. The major side effects include pale and cool skin, anxiety, seizures, changes in behavior, confusion, blurred vision, coma, and cold sweats.