Generic Name: insulin isophane (IN soo lin EYE soe fane)
Brand Names: HumuLIN N, HumuLIN N Pen, NovoLIN N, NovoLIN N Innolet, NovoLIN N PenFill, Relion NovoLIN N
What is Novolin N PenFill (insulin isophane)?
Insulin isophane is a man-made form of a hormone that is produced in the body. It works by lowering levels of glucose (sugar) in the blood. Insulin isophane is a long-acting form of insulin that is slightly different from other forms of insulin that are not man-made.
Insulin isophane is used to treat diabetes.
Insulin isophane may also be used for other purposes not listed in this medication guide.
What is the most important information I should know about Novolin N PenFill (insulin isophane)?
Take care to keep your blood sugar from getting too low, causing hypoglycemia. Symptoms of low blood sugar may include headache, nausea, hunger, confusion, drowsiness, weakness, dizziness, blurred vision, fast heartbeat, sweating, tremor, or trouble concentrating. Carry a piece of non-dietetic hard candy or glucose tablets with you in case you have low blood sugar. Also be sure your family and close friends know how to help you in an emergency.
Also watch for signs of blood sugar that is too high (hyperglycemia). These symptoms include increased thirst, loss of appetite, increased urination, nausea, vomiting, drowsiness, dry skin, and dry mouth. Check your blood sugar levels and ask your doctor how to adjust your insulin doses if needed.
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.
Insulin isophane 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.
What should I discuss with my healthcare provider before using Novolin N PenFill (insulin isophane)?
Do not use this medication if you are allergic to insulin, or if you are having an episode of hypoglycemia (low blood sugar).
Before using insulin isophane, 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 isophane 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.
Your doctor will need to check your progress on a regular basis. Do not miss any scheduled appointments.
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 isophane 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 Novolin N PenFill (insulin isophane)?
Use this medication exactly as it was prescribed for you. Do not use it in larger amounts or for longer than recommended by your doctor. Follow the directions on your prescription label.
Insulin isophane is given as an injection (shot) under your skin. Your doctor, nurse, or pharmacist will give you specific instructions on how and where to inject this medicine. 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.
Choose a different place in your injection skin area each time you use this 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.
Some insulin needles can be used more than once, depending on needle brand and type. But a reused needle must be properly cleaned, recapped, and inspected for bending or breakage. Reusing needles also increases your risk of infection. Ask your doctor or pharmacist whether you are able to reuse your insulin needles.
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.
Check your blood sugar carefully during a time of stress or illness, if you travel, exercise more than usual, or skip meals. These things can affect your glucose levels and your insulin dose needs may also change.
Watch for signs of blood sugar that is too high (hyperglycemia). These symptoms include increased thirst, loss of appetite, increased urination, nausea, vomiting, drowsiness, dry skin, and dry mouth. Check your blood sugar levels and ask your doctor how to adjust your insulin doses if needed.
Ask your doctor how to adjust your insulin isophane dose if needed. Do not change your dose without first talking to your doctor. Carry an ID card or wear a medical alert bracelet stating that you have diabetes, in case of emergency. Any doctor, dentist, or emergency medical care provider who treats you should know that you are diabetic. Storing unopened vials, cartridges, 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. Storing after your first use: Keep the "in-use" vials, cartridges, or prefilled syringes at room temperature and use prior to the expiration date. Keep the in-use injection pen at room temperature and use it within 14 days. Do not refrigerate.
Do not freeze insulin isophane, and throw away the medication if it has become frozen.
What happens if I miss a dose?
Since insulin isophane is used before meals or snacks, you may not be on a timed dosing schedule. Whenever you use insulin isophane, be sure to eat a meal or snack within 30 to 60 minutes. Do not use extra insulin isophane to make up a missed dose.
It is important to keep insulin isophane 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 if you think you have used too much of this medicine. 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 Novolin N PenFill (insulin isophane)?
Do not change the brand of insulin isophane or syringe you are using without first talking to your doctor or pharmacist. Avoid drinking alcohol. Your blood sugar may become dangerously low if you drink alcohol while using insulin isophane.
Novolin N PenFill (insulin isophane) 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 isophane. Symptoms of low blood sugar may include headache, nausea, hunger, confusion, drowsiness, weakness, dizziness, blurred vision, fast heartbeat, sweating, tremor, trouble concentrating, confusion, or seizure (convulsions). Watch for signs of low blood sugar. Carry a piece of non-dietetic hard candy or glucose tablets with you in case you have low blood sugar.
Tell your doctor if you have itching, swelling, redness, or thickening of the skin where you inject insulin isophane.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
What other drugs will affect Novolin N PenFill (insulin isophane)?
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;
guanethidine (Ismelin); or
beta-blockers such as atenolol (Tenormin), bisoprolol (Zebeta), labetalol (Normodyne, Trandate), metoprolol (Lopressor, Toprol), nadolol (Corgard), propranolol (Inderal, InnoPran), timolol (Blocadren), and others.
There are many other medicines that can increase or decrease the effects of insulin isophane on lowering your blood sugar. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor. Keep a list with you of all the medicines you use and show this list to any doctor or other healthcare provider who treats you.
More Novolin N PenFill resources
- Novolin N PenFill Side Effects (in more detail)
- Novolin N PenFill Use in Pregnancy & Breastfeeding
- Novolin N PenFill Drug Interactions
- Novolin N PenFill Support Group
- 0 Reviews for Novolin N PenFill - Add your own review/rating
- Insulin Isophane InnoLets MedFacts Consumer Leaflet (Wolters Kluwer)
- Humulin N Prescribing Information (FDA)
- Humulin N Consumer Overview
- Humulin N Pens MedFacts Consumer Leaflet (Wolters Kluwer)
- Novolin N Prescribing Information (FDA)
Compare Novolin N PenFill with other medications
- Diabetes, Type 1
- Diabetes, Type 2
- Gestational Diabetes
Where can I get more information?
- Your pharmacist can provide more information about insulin isophane.
See also: Novolin N PenFill side effects (in more detail)
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