Humalog (insulin lispro) is a fast-acting form of insulin that works by lowering levels of glucose (sugar) in the blood.
Humalog is used to treat type 1 (insulin-dependent) diabetes in adults. It is usually given together with another long-acting insulin.
Humalog is also used together with oral (taken by mouth) medications to treat type 2 (non insulin-dependent) diabetes in adults.
Important information
Humalog is a fast-acting insulin that begins to work very quickly. If you use this medication with meal, use it within 15 minutes before or just after you eat.
Never share an injection pen or cartridge with another person. Sharing injection pens or cartridges can allow disease such as hepatitis or HIV to pass from one person to another.
Humalog is only part of a complete program of treatment that may also include diet, exercise, weight control, foot care, eye care, dental care, and testing your blood sugar. Follow your diet, medication, and exercise routines very closely. Changing any of these factors can affect your blood sugar levels.
Before taking this medicine
You should not use Humalog if you are allergic to insulin, or if you are having an episode of hypoglycemia (low blood sugar).
To make sure Humalog is safe for you, tell your doctor if you have:
FDA pregnancy category B. This medication is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.
See also: Pregnancy and breastfeeding warnings (in more detail)
It is not known whether insulin lispro passes into breast milk or if it could harm a nursing baby. Tell your doctor if you are breast-feeding a baby.
How should I use Humalog?
Use Humalog exactly as it was prescribed for you. Follow all directions on your prescription label. Do not use this medicine in larger or smaller amounts or for longer than recommended. Humalog is given as an injection (shot) under your skin, using a needle and syringe or an insulin pump. It may also be given through a needle placed into a vein.
You will be shown how to use injections at home. Do not self inject this medicine if you do not understand how to give the injection and properly dispose of used needles and syringes. Choose a different area of skin in your injection area each time you use this medicine. Do not inject into the same place two times in a row.
Humalog is a fast-acting medicine that begins to work very quickly. After using Humalog, you should eat a meal within 5 to 10 minutes.
If you use this medicine with an insulin pump, do not mix or dilute Humalog with any other insulin. Infusion pump tubing, catheters, and the needle location on your skin should be changed every 3 days. Change the medicine in the reservoir every 6 days. Throw away any medication leftover in the reservoir.
Never share an injection pen or cartridge with another person. Sharing injection pens or cartridges can allow disease such as hepatitis or HIV to pass from one person to another.
Follow any state or local laws about throwing away used needles and syringes. Use a puncture-proof "sharps" disposal container (ask your pharmacist where to get one and how to throw it away). Keep this container out of the reach of children and pets.
Your blood sugar will need to be checked often, and you may need other blood tests at your doctor"s office.
Low blood sugar (hypoglycemia) can happen to everyone who has diabetes. Symptoms include headache, hunger, sweating, confusion, irritability, dizziness, or feeling shaky. Always keep a source of sugar with you in case you have low blood sugar. Sugar sources include fruit juice, hard candy, crackers, raisins, and non-diet soda. Be sure your family and close friends know how to help you in an emergency.
If you have severe hypoglycemia and cannot eat or drink, use a glucagon injection. Your doctor can prescribe a glucagon emergency injection kit and tell you how to use it.
Also watch for signs of high blood sugar (hyperglycemia) such as increased thirst, increased urination, hunger, dry mouth, fruity breath odor, drowsiness, dry skin, blurred vision, and weight loss.
Check your blood sugar carefully during times of stress, travel, illness, surgery or medical emergency, vigorous exercise, or if you drink alcohol or skip meals. These things can affect your glucose levels and your dose needs may also change. If your doctor changes your brand, strength, or type of insulin, your dosage needs may change. Do not change your medication dose or schedule without your doctor"s advice.
Humalog is only part of a treatment program that may also include diet, exercise, weight control, blood sugar testing, and special medical care. Follow your doctor"s instructions very closely.
Storing unopened vials, cartridges, or injection pens: Keep in the carton and store in a refrigerator, protected from light. Throw away any insulin not used before the expiration date on the medicine label. Do not freeze Humalog, and throw away the medication if it has become frozen.
Unopened vials, cartridges, or injection pens may also be stored at room temperature for up to 28 days, away from heat and bright light. Throw away any insulin not used within 28 days.
Storing after your first use: You may keep "in-use" vials at room temperature, protected from light. Use within 28 days.
In-use cartridges or injection pens must be stored at room temperature, away from heat and bright light. Do not refrigerate an in-use cartridge or injection pen. Keep it at room temperature and use within 28 days.
An infusion bag should be stored at room temperature and used within 24 hours.
What happens if I miss a dose?
Since Humalog is used before meals, you may not be on a timed dosing schedule. Whenever you use Humalog, be sure to eat a meal within 15 minutes. Do not use extra to make up a missed dose.
Use this medicine regularly to get the most benefit. Get your prescription refilled before you run out of medicine completely.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An insulin overdose can cause life-threatening hypoglycemia.
Symptoms of severe hypoglycemia include extreme weakness, blurred vision, sweating, trouble speaking, tremors, stomach pain, confusion, seizure (convulsions), or coma.
What should I avoid while using Humalog?
Humalog may impair your thinking or reactions. Avoid driving or operating machinery until you know how this medicine will affect you.
Avoid drinking alcohol. It can affect your blood sugar levels.
Humalog side effects
Get emergency medical help if you have any of these signs of insulin allergy: itching skin rash over the entire body, wheezing, trouble breathing, fast heart rate, sweating, or feeling like you might pass out.
Call your doctor at once if you have:
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itching, swelling, redness, or thickening of the skin where you inject Humalog; or
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low potassium--confusion, uneven heart rate, extreme thirst, increased urination, leg discomfort, muscle weakness or limp feeling.
Common Humalog side effects may include:
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low blood sugar--headache, hunger, weakness, sweating, confusion, irritability, dizziness, fast heart rate, or feeling jittery.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
See also: Side effects (in more detail)
What other drugs will affect Humalog?
Many other medicines can increase or decrease the effects of Humalog on lowering your blood sugar. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Tell each of your health care providers about all medicines you use now and any medicine you start or stop using.
