Insulin

Animal-based insulin is a very safe product. However, some components may cause an allergic reaction (see "What side effects may occur?"). Therefore, genetically engineered human insulin has been developed to lessen the chance of an allergic reaction. It is structurally identical to the insulin produced by your body's pancreas. However, some human insulin may be produced in a semi-synthetic process that begins with animal-based ingredients, and may cause an allergic reaction.

Most important fact about Insulin

Regardless of the type of insulin your doctor has prescribed, you should follow carefully the dietary and exercise guidelines he or she has recommended. Failure to follow these guidelines or to take your insulin as prescribed may result in serious and potentially life-threatening complications such as hypoglycemia (lowered blood sugar levels).

How should you take Insulin?

Take your insulin exactly as prescribed, being careful to follow your doctor's dietary and exercise recommendations. Before taking your injection, carefully read and follow the manufacturer's instructions on how to prepare your pre-filled pen or syringe. Clean the injection area with alcohol first; typical areas of injection are the abdomen, thighs, and arms. Insert the needle and push the plunger as far as it will go. Do not rub the injection area. To avoid skin damage, the next injection should be made at least half an inch from the previous site.

• If you miss a dose...
  Your doctor should tell you what to do if you miss an insulin injection or meal.

• Storage instructions...
  Store insulin in a refrigerator (but not in the freezer) or in another cool, dark place. Do not expose insulin to heat or direct sunlight.

Some brands of pre-filled syringes can be kept at room temperature for a week or a month. The vial or cartridge of genetically engineered insulin lispro can be kept unrefrigerated for up to 28 days. Check your product's label. Never use insulin after the expiration date which is printed on the label and carton.