insulin lispro (generic name)

Humalog (brand name)

This drug lowers the amount of sugar in your blood
(IN su lin LYE sproe)
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What is this medicine?

INSULIN LISPRO (IN su lin LYE sproe) is a human-made form of insulin. This drug lowers the amount of sugar in your blood. This medicine is a rapid-acting insulin that starts working faster than regular insulin. It will not work as long as regular insulin.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
  • episodes of hypoglycemia
  • kidney disease
  • liver disease
  • an unusual or allergic reaction to insulin, metacresol, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding

How should I use this medicine?

This medicine is for injection under the skin or infusion into a vein. This medicine may be given by health care professional in a hospital or clinic setting. It is important to follow the directions given to you by your health care professional or doctor. You should inject this medicine within 15 minutes before or after your meal. You will be taught how to use this medicine and how to adjust doses for activities and illness. Do not use more insulin than prescribed. Do not use more or less often than prescribed.

Always check the appearance of your insulin before using it. This medicine should be clear and colorless like water. Do not use it if it is cloudy, thickened, colored, or has solid particles in it.

It is important that you put your used needles and syringes in a special sharps container. Do not put them in a trash can. If you do not have a sharps container, call your pharmacist or healthcare provider to get one.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

What if I miss a dose?

It is important not to miss a dose. Your health care professional or doctor should discuss a plan for missed doses with you. If you do miss a dose, follow their plan. Do not take double doses.

What may interact with this medicine?

  • other medicines for diabetes

Many medications may cause an increase or decrease in blood sugar, these include:

  • alcohol containing beverages
  • aspirin and aspirin-like drugs
  • chloramphenicol
  • chromium
  • diuretics
  • female hormones, like estrogens or progestins and birth control pills
  • heart medicines
  • isoniazid
  • male hormones or anabolic steroids
  • medicines for weight loss
  • medicines for allergies, asthma, cold, or cough
  • medicines for mental problems
  • medicines called MAO Inhibitors like Nardil, Parnate, Marplan, Eldepryl
  • niacin
  • NSAIDs, medicines for pain and inflammation, like ibuprofen or naproxen
  • pentamidine
  • phenytoin
  • probenecid
  • quinolone antibiotics like ciprofloxacin, levofloxacin, ofloxacin
  • some herbal dietary supplements
  • steroid medicines like prednisone or cortisone
  • thyroid medicine

Some medications can hide the warning symptoms of low blood sugar. You may need to monitor your blood sugar more closely if you are taking one of these medications. These include:

  • beta-blockers such as atenolol, metoprolol, propranolol
  • clonidine
  • guanethidine
  • reserpine

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Last Updated: October 16, 2012
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