Overview: Granix works by helping your body make white blood cells. It is used to shorten the time white blood cell counts stay low after cancer treatment. Granix may be given by a health care provider or at home by you or a caregiver. If you use Granix at home, make sure you understand how to properly prepare and inject a dose.
Uses
What is Granix used for?
Granix (tbo-filgrastim) is commonly used to help shorten the amount of time certain people have low levels of white blood cells, also called neutropenia.
Granix may also be used for other conditions as determined by your health care provider.
How does Granix work (mechanism of action)?
Granix stimulates the growth of a type of blood cell in your body called neutrophils. Neutrophils help you to fight infection.
How is Granix supplied (dosage forms)?
Brands and other names
- Granix
Dosage forms and strengths
- 300 mcg/0.5 mL solution for injection (prefilled syringe)
- 480 mcg/0.8 mL solution for injection (prefilled syringe)
- 300 mcg/1 mL solution for injection (vial)
- 480 mcg/1.6 mL solution for injection (vial)
How should I store Granix?
Granix should be stored in a refrigerator, between 36 F and 46 F (2 C and 8 C). Keep it in the original carton to protect it from light. Do not freeze. It can be exposed to temperatures between 73 F and 81 F (23 C and 27 C) one time for up to 5 days. If not used within those 5 days, it should be returned to the refrigerator. If the medicine is left out of the refrigerator for more than 5 days, you should throw it away.
Side Effects
What are the most common side effects of Granix?
The most common side effects of Granix are listed below. Tell your health care provider if you have any of these side effects that bother you.
- Bone pain
- Headache
- Arm or leg pain (children)
- Diarrhea (children)
- Fever (children)
- Low levels of platelets (children)
There may be other side effects of Granix that are not listed here. Contact your health care provider if you think you are having a side effect of a medicine. In the U.S., you can report side effects to the FDA at www.fda.gov/medwatch or by calling 800-FDA-1088 (800-332-1088). In Canada, you can report side effects to Health Canada at www.health.gc.ca/medeffect or by calling 866-234-2345.
What are the serious side effects of Granix?
While less common, the most serious side effects of Granix are described below, along with what to do if they happen.
Severe Allergic Reactions. Granix may cause allergic reactions, which can be serious. Stop using Granix and get help right away if you have any of the following symptoms of a serious allergic reaction.
- Breathing problems or wheezing
- Racing heart
- Fever or general ill feeling
- Swollen lymph nodes
- Swelling of the face, lips, mouth, tongue, or throat
- Trouble swallowing or throat tightness
- Itching or skin rash
- Bumps on the skin called hives that can be red, pink, white, or brown depending on your skin tone
- Nausea or vomiting
- Dizziness, feeling lightheaded, or fainting
- Stomach cramps
- Joint pain
Spleen Enlargement or Rupture. Granix can cause your spleen to get bigger or rupture. A ruptured spleen can cause death. Stop using Granix and call your health care provider right away if you have pain in your left shoulder or left upper stomach area.
Acute Respiratory Distress Syndrome (ARDS). Granix can cause a serious lung problem called ARDS. Call your health care provider right away if you have trouble breathing, shortness of breath, or fast breathing with or without a fever.
Kidney Damage (Glomerulonephritis). Granix can cause a type of kidney problem called glomerulonephritis. Your health care provider may need to reduce your dose or temporarily stop this medicine if this happens. Call your health care provider right away if you have any of the following symptoms of kidney damage.
- Reduced need to pee
- Swelling in your face or ankles
- Blood in your pee or dark-colored pee
Capillary Leak Syndrome (CLS). Granix may cause capillary leak syndrome (CLS), where protein and fluid leak out of your blood vessels into your body tissues. CLS can be serious or life-threatening. Tell your health care provider right away if you have any of the following symptoms of CLS.
- Low blood pressure
- Dizziness, feeling lightheaded, or fainting upon standing
- Fluid retention
- Weight gain
- Shortness of breath
High White Blood Cells (Leukocytosis). Granix may sometimes cause certain white blood cell levels to become too high.. A health care provider will likely check your white blood cells while you are using Granix to monitor for this. Keep all appointments, including those for lab work, while you are using Granix.
Inflammation of Blood Vessels (Cutaneous Vasculitis). Granix may cause inflammation of your blood vessels. Tell your health care provider right away if you have purple spots or redness of your skin.
Inflammation of the Aorta (Aortitis). Medicines similar to Granix have caused inflammation of the aorta, which is a large blood vessel that brings blood from your heart to the rest of your body. Call your health care provider if you have any of the following symptoms of aortitis.
- Fever
- Stomach or back pain
- Tiredness
Warnings & Precautions
Who should not use Granix?
Allergies to Ingredients. People who are allergic to any of the following should not use Granix.
- Filgrastim
- Granix
- Pegfilgrastim
- Any of the ingredients in the specific product dispensed
Your pharmacist can tell you all of the ingredients in Granix.
What should I know about Granix before using it?
Do not use Granix unless it has been prescribed to you by a health care provider. Use it as prescribed. Only use Granix if your health care provider has trained you or your caregiver on how to use it. If you or your caregiver will be giving Granix at home, read and follow the instructions for use that come with your medicine. Talk to your pharmacist if you have any questions about how to use Granix.
Do not skip doses, change your dose, or stop using Granix without talking about this with your health care provider.
Do not share Granix with other people, even if they have the same condition as you. It may harm them.
Do not share needles or syringes with other people. Always use a new needle or syringe for each injection.
Keep Granix out of the reach of children. Since this medicine must be kept in a refrigerator, take special precautions to keep it away from children who also use the refrigerator.
Take Granix out of the refrigerator for 30 minutes before preparing your dose. After you inject your dose, throw away any unused Granix.
Do not shake Granix. Do not inject where your skin is thickened or bruised.
Use Granix at least 24 hours before or 24 hours after chemotherapy.
You will need to have your blood checked while using Granix. Keep all appointments to check your blood.
Bone pain is a common side effect of Granix. Talk to your health care provider about your options to safely treat this pain. They may recommend an over-the-counter pain medicine such as acetaminophen or a nonsteroidal anti-inflammatory drug.
What should I tell my health care provider before using Granix?
Tell your health care provider about all of your health conditions and any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using. This will help them know if Granix is right for you.
In particular, make sure that you discuss any of the following.
Breast or Lung Cancer. Granix may increase the risk of a type of cancer called acute myeloid leukemia (AML) or a condition called myelodysplastic syndrome in certain people. If you have breast cancer or lung cancer and use Granix with chemotherapy and/or radiation therapy, call your health care provider if you become more tired than usual, have easy bruising or bleeding, and fever.
Congenital Neutropenia. Granix may increase the risk of a type of cancer called acute myeloid leukemia (AML) or a condition called myelodysplastic syndrome in certain people. If you have congenital neutropenia, call your health care provider if you become more tired than usual, have easy bruising or bleeding, and fever.
Sickle Cell Disorder. Tell your health care provider if you have sickle cell disorder. Granix may cause a sickle cell crisis in people who have this condition. Call your health care provider and stop using Granix if you have symptoms such as pain or trouble breathing.
Current and Past Health Conditions. Tell your health care provider if you have any of the following.
- Kidney problems
- Receiving radiation therapy
- Upcoming bone scan or test
Pregnancy. It is not known if or how Granix could affect pregnancy or harm a fetus. You should avoid getting pregnant while using Granix. Tell your health care provider if you are pregnant or plan to become pregnant.
Breastfeeding. It is not known if Granix passes into breast milk. You should avoid breastfeeding while using Granix and for 2 weeks after your last dose.
How can I get more information about Granix?
For more information about Granix, you can visit the drugmaker’s website at www.granixrx.com or call them at 888-4-TEVARX (888-483-8279).
Interactions
Does Granix interact with foods or drinks?
There are no known interactions between Granix and foods or drinks.
It is unknown if drinking alcohol will affect Granix.
Does Granix interact with other medicines (drug interactions)?
Always tell your health care provider about any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using.
Overdose/Missed Dose
What should I do if I accidentally use too much Granix?
If you or someone else has used too much Granix, get medical help right away, call 911, or contact a Poison Control center at 800-222-1222.
What should I do if I miss a dose of Granix?
If you miss a dose of Granix, talk to your health care provider about when to use your next dose.
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