Let's take a minute to talk about your medication. 

This insulin is Lantus U-100. U-100 means there are 100 units of insulin in every 1 milliliter. You should take it exactly as prescribed, at the same time each day. 

Lantus helps keep blood sugar at healthy levels in patients with diabetes. Controlling diabetes can help postpone or prevent serious health problems. 

Lantus is long-acting. It stays at steady levels in your body throughout the day. It cannot treat blood sugar increases that happen after eating. 

You need to feel confident with your training on insulin injections. If you have questions, your doctor or pharmacist can help. Remember to always double-check that you have the right insulin and the right dose. 

Lantus can cause low blood sugar. This could make you feel shaky, irritable, lightheaded or sweaty. Low blood sugar could also affect your concentration and reaction time. You should be aware of this before doing activities that require you to be alert, like driving. You can help prevent low blood sugar by telling your doctor when you are sick or stressed. Also, don't skip meals and don't over-exercise. 

Mild low blood sugar is treated by eating or drinking things that contain sugar. Some examples include fruit juice, raisins, hard candies, or glucose tablets. It is a good idea to always have these available. 

Severely low or high blood sugar may require emergency help. Make sure you discuss a plan with your doctor. 

You should store unopened Lantus vials in the refrigerator. The vial you are using can be kept at room temperature. Once you use a vial, you must throw it away after 28 days. 

For best results, always know when to check your blood sugar and read the instructions that come with your vial of Lantus.