Low Blood Sugar
When your blood sugar falls below 70 mg/dL, you may have low blood sugar (also called "hypoglycemia").
Most lows can be prevented when you know what causes them. Yet, a few may still happen. In some cases,
low blood sugar may require emergency treatment. However, low blood sugar
does not have to be a big problem if you know the symptoms and exactly what to do.
What causes hypoglycemia?
The most common causes of low blood sugar are:
- Getting more exercise than usual
- Taking too much diabetes medication
- Eating at the wrong time for the medicine you take
- Skipping or not finishing meals or snacks
- Drinking alcoholic beverages
- An infection or illness (especially with diarrhea or vomiting)
- A change in the body's need for insulin
- Diseases of the adrenal, pituitary, or thyroid gland, or progression of kidney or liver disease
- Interactions with other drugs that lower blood glucose, such as oral antidiabetic agents, salicylates (e.g., aspirin), certain antibiotics, and certain antidepressants
The symptoms of low blood sugar can come on quite suddenly. In general, the warning signs are:
- Feeling shaky
- Sweatiness
- Tiredness
- Hunger
- A fast heartbeat
- An ill-temper or confusion
- Blurred vision or a headache
- Or...no symptoms at all!

Important Safety Information
Humalog, Humalog Mix75/25, and Humalog Mix50/50 are for use in patients with diabetes to control high blood sugar. Humalog should be used with a longer-acting insulin, except when used in combination with sulfonylureas in patients with type 2 diabetes.
Humalog insulins are contraindicated during episodes of hypoglycemia and in patients sensitive to Humalog or one of its excipients. The safety and effectiveness of Humalog in patients less than 3 years of age have not been established. Safety and effectiveness of Humalog Mix75/25 and Humalog Mix50/50 in patients less than 18 years of age have not been established. There are no clinical studies of the use of Humalog insulins in pregnancy or nursing mothers.
Potential side effects associated with the use of all insulins include low blood sugar, weight gain, low blood potassium, changes in fat tissue at the site of injection, and allergic reactions, both general and local. Humalog Mix75/25 and Humalog Mix50/50 should not be mixed with another insulin. Starting or changing insulin therapy should be done cautiously and only under medical supervision.
Humalog insulins are available by prescription only. See the Humalog, Humalog Mix75/25, and Humalog Mix50/50 Patient Product Information for important facts about these products.
Humalog is a registered trademark of Eli Lilly and Company. Humalog Mix75/25 and Humalog Mix50/50 are trademarks of Eli Lilly and Company.
Humalog, Humalog Mix75/25, and Humalog Mix50/50 are for use in patients with diabetes to control high blood sugar. Humalog should be used with a longer-acting insulin, except when used in combination with sulfonylureas in patients with type 2 diabetes.
Humalog insulins are contraindicated during episodes of hypoglycemia and in patients sensitive to Humalog or one of its excipients. The safety and effectiveness of Humalog in patients less than 3 years of age have not been established. Safety and effectiveness of Humalog Mix75/25 and Humalog Mix50/50 in patients less than 18 years of age have not been established. There are no clinical studies of the use of Humalog insulins in pregnancy or nursing mothers.
Potential side effects associated with the use of all insulins include low blood sugar, weight gain, low blood potassium, changes in fat tissue at the site of injection, and allergic reactions, both general and local. Humalog Mix75/25 and Humalog Mix50/50 should not be mixed with another insulin. Starting or changing insulin therapy should be done cautiously and only under medical supervision.
Humalog insulins are available by prescription only. See the Humalog, Humalog Mix75/25, and Humalog Mix50/50 Patient Product Information for important facts about these products.
Humalog is a registered trademark of Eli Lilly and Company. Humalog Mix75/25 and Humalog Mix50/50 are trademarks of Eli Lilly and Company.


























