Monday, October 3, 2016

Humalog Mix 50/50 KwikPen


Generic Name: insulin lispro and insulin lispro protamine (IN soo lin LISS pro and IN soo lin LISS pro PRO ta meen)

Brand Names: HumaLOG Mix 50/50, HumaLOG Mix 50/50 KwikPen, HumaLOG Mix 50/50 Pen, HumaLOG Mix 75/25, HumaLOG Mix 75/25 KwikPen, HumaLOG Mix 75/25 Pen


What is Humalog Mix 50/50 KwikPen (insulin lispro and insulin lispro protamine)?

Insulin is a hormone that is produced in the body. It works by lowering levels of glucose (sugar) in the blood. Insulin lispro is a fast-acting form of insulin. Insulin lispro protamine is an intermediate-acting form of insulin.


Insulin lispro and insulin lispro protamine is used to treat type 1 diabetes in adults. It is usually given together with another long-acting insulin.


Insulin lispro and insulin lispro protamine may also be used for purposes not listed in this medication guide.


What is the most important information I should know about Humalog Mix 50/50 KwikPen (insulin lispro and insulin lispro protamine)?


Use this medication within 15 minutes before eating a meal.

Low blood sugar (hypoglycemia) can occur if you skip a meal, exercise too long, drink alcohol, or are under stress. Symptoms include headache, hunger, weakness, sweating, tremors, irritability, or trouble concentrating. Carry hard candy or glucose tablets with you in case you have low blood sugar. Other sugar sources include orange juice and milk. Be sure your family and close friends know how to help you in an emergency.


Signs of blood sugar that is too high (hyperglycemia) may include increased thirst, increased urination, hunger, dry mouth, fruity breath odor, drowsiness, dry skin, blurred vision, and weight loss. Your blood sugar will need to be checked often, and you may need to adjust your insulin dose.


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.

What should I discuss with my healthcare provider before using Humalog Mix 50/50 KwikPen (insulin lispro and insulin lispro protamine)?


Do not use this medication if you are allergic to insulin, or if you are having an episode of hypoglycemia (low blood sugar).

To make sure you can safely use insulin lispro and insulin lispro protamine, tell your doctor if you have liver or kidney disease.


Tell your doctor about all other medications you use, including any oral (by mouth) diabetes medications.


Insulin 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.


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. It is not known whether insulin lispro and insulin lispro protamine passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

How should I use Humalog Mix 50/50 KwikPen (insulin lispro and insulin lispro protamine)?


Insulin is injected under the skin. You will be shown how to use injections at home. Do not self inject this medicine if you do not fully understand how to give the injection and properly dispose of used needles and syringes.


Use this medication within 15 minutes before eating a meal.

Insulin lispro and insulin lispro protamine should appear cloudy after mixing. Do not use the medication if it has changed colors or has any particles in it. Return the medication to your pharmacy for a new supply.


Use a different place on your injection skin area each time you give the injection. Your care provider will show you the best places on your body to inject the medication. Do not inject into the same place two times in a row.


Use each disposable needle only one time. Throw away used needles in a puncture-proof container (ask your pharmacist where you can get one and how to dispose of it). Keep this container out of the reach of children and pets.


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.

Your blood sugar will need to be checked often, and you may need other blood tests at your doctor's office. Visit your doctor regularly.


Know the signs of low blood sugar (hypoglycemia) and how to recognize them: headache, hunger, weakness, sweating, tremors, irritability, or trouble concentrating.

Also watch for signs of blood sugar that is too high (hyperglycemia). These symptoms include increased thirst, increased urination, hunger, dry mouth, fruity breath odor, drowsiness, dry skin, blurred vision, and weight loss.


Check your blood sugar carefully during a time of stress or illness, if you travel, exercise more than usual, drink alcohol, or skip meals. These things can affect your glucose levels and your dose needs may also change.


Ask your doctor how to adjust your insulin dose if needed. Do not change your medication dose or schedule without your doctor's advice. Wear a medical alert tag or carry an ID card stating that you have diabetes. Any medical care provider who treats you should know that you are diabetic. Storing unopened vials 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. Unopened vials 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. Unopened injection pens may also be stored at room temperature for up to 10 days, away from heat and bright light. Throw away any insulin not used within 10 days. Storing after your first use: You may keep "in-use" vials in the refrigerator, protected from light. Use within 28 days. Do not refrigerate an in-use injection pen. Keep it at room temperature and use within 10 days.

Do not freeze insulin lispro and insulin lispro protamine, and throw away the medication if it has become frozen.


What happens if I miss a dose?


Since this medication is used before meals, you may not be on a timed dosing schedule. Whenever you use insulin lispro and insulin lispro protamine, be sure to eat a meal within 15 minutes. Do not use extra insulin lispro and insulin lispro protamine to make up a missed dose.


Keep insulin lispro and insulin lispro protamine on hand at all times. 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, confusion, tremors, sweating, fast heart rate, trouble speaking, nausea, vomiting, rapid breathing, fainting, and seizure (convulsions).


What should I avoid while using Humalog Mix 50/50 KwikPen (insulin lispro and insulin lispro protamine)?


Do not change the brand of insulin lispro and insulin lispro protamine or syringe you are using without first talking to your doctor or pharmacist. Avoid drinking alcohol. It can lower your blood sugar. Do not expose insulin lispro and insulin lispro protamine to high heat.

Humalog Mix 50/50 KwikPen (insulin lispro and insulin lispro protamine) 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.

Hypoglycemia, or low blood sugar, is the most common side effect of insulin. Symptoms include headache, hunger, weakness, sweating, tremors, irritability, trouble concentrating, rapid breathing, fast heartbeat, fainting, or seizure (severe hypoglycemia can be fatal). Carry hard candy or glucose tablets with you in case you have low blood sugar.


Insulin lispro and insulin lispro protamine can also cause hypokalemia (low potassium levels in the blood). Call your doctor at once if you have symptoms such as confusion, uneven heart rate, extreme thirst, increased urination, leg discomfort, muscle weakness or limp feeling.

Tell your doctor if you have itching, swelling, redness, or thickening of the skin where you inject insulin lispro and insulin lispro protamine.


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.


What other drugs will affect Humalog Mix 50/50 KwikPen (insulin lispro and insulin lispro protamine)?


Using certain medicines can make it harder for you to tell when you have low blood sugar. Tell your doctor if you use any of the following:



  • albuterol (Proventil, Ventolin);




  • clonidine (Catapres);




  • reserpine; or




  • beta-blockers such as atenolol (Tenormin, Tenoretic), carvedilol (Coreg), labetalol (Normodyne, Trandate), metoprolol (Dutoprol, Lopressor, Toprol), nadolol (Corgard), propranolol (Inderal, InnoPran), sotalol (Betapace), and others.




There are many other medicines that can increase or decrease the effects of insulin lispro and insulin lispro protamine on lowering your blood sugar. Tell your doctor about all medications you use. This includes prescription, over the counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.

More Humalog Mix 50/50 KwikPen resources


  • Humalog Mix 50/50 KwikPen Side Effects (in more detail)
  • Humalog Mix 50/50 KwikPen Use in Pregnancy & Breastfeeding
  • Humalog Mix 50/50 KwikPen Drug Interactions
  • Humalog Mix 50/50 KwikPen Support Group
  • 0 Reviews for Humalog Mix 50/50 KwikPen - Add your own review/rating


  • HumaLog Mix 50/50 Vials MedFacts Consumer Leaflet (Wolters Kluwer)

  • Humalog Mix 50/50 Pens MedFacts Consumer Leaflet (Wolters Kluwer)

  • Humalog Mix 50/50 Advanced Consumer (Micromedex) - Includes Dosage Information

  • Humalog Mix 75/25 Prescribing Information (FDA)



Compare Humalog Mix 50/50 KwikPen with other medications


  • Diabetes, Type 1
  • Diabetes, Type 2


Where can I get more information?


  • Your pharmacist can provide more information about insulin lispro and insulin lispro protamine.

See also: Humalog Mix 50/50 KwikPen side effects (in more detail)


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