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Generic Name: granisetron (oral) (gra NIS e tron)
Brand Name: Granisol
The Granisol brand name has been discontinued in the U.S. If generic versions of this product have been approved by the FDA, there may be generic equivalents available.
What is Granisol (granisetron)?
Granisetron blocks the actions of chemicals in the body that can trigger nausea and vomiting.
Granisetron is used to prevent nausea and vomiting that may be caused by medicine to treat cancer (chemotherapy or radiation).
Granisetron may also be used for purposes not listed in this medication guide.
What is the most important information I should know about Granisol (granisetron)?
Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.
What should I discuss with my health care provider before taking Granisol (granisetron)?
You should not take granisetron if you are allergic to it.
To make sure granisetron is safe for you, tell your doctor if you have:
a heart rhythm disorder;
a personal or family history of Long QT syndrome;
an electrolyte imbalance (such as low levels of potassium or magnesium in your blood); or
if you have recently had stomach or intestinal surgery.
FDA pregnancy category B. Granisetron is not expected to harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.
It is not known whether granisetron passes into breast milk or if it could harm a nursing baby. Tell your doctor if you are breast-feeding a baby.
How should I take Granisol (granisetron)?
Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended.
Granisetron is usually taken only on the day of treatment with chemotherapy or radiation.
Measure liquid medicine with the dosing syringe provided, or with a special dose-measuring spoon or medicine cup. If you do not have a dose-measuring device, ask your pharmacist for one.
Your doctor may want you to take only one dose, up to 1 hour before chemotherapy or radiation.
For patients undergoing chemotherapy, a second dose of granisetron is sometimes given 12 hours after the first dose. Follow your doctor's dosing instructions very carefully.
Granisetron is not likely to be useful if you keep taking it during times when you are not receiving chemotherapy or radiation treatment.
Do not share this medicine with another person.
Store at room temperature away from moisture, heat, and light.
Store the liquid medicine in an upright position. Keep the bottle tightly closed when not in use.
What happens if I miss a dose?
Tell your doctor if you forget to take your dose within 1 hour before chemotherapy or radiation. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
What should I avoid while taking Granisol (granisetron)?
Follow your doctor's instructions about any restrictions on food, beverages, or activity.
Granisol (granisetron) side effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
fast or pounding heartbeats;
increased blood pressure--severe headache, buzzing in your ears, anxiety, confusion, shortness of breath; or
high levels of serotonin in the body--agitation, hallucinations, fever, fast heart rate, overactive reflexes, nausea, vomiting, diarrhea, loss of coordination, fainting.
Common side effects may include:
stomach pain, indigestion, loss of appetite;
sleep problems (insomnia); or
fever, flu symptoms.
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.
See also: Side effects (in more detail)
What other drugs will affect Granisol (granisetron)?
There are many other medicines that can increase your risk of heart rhythm problems if you use them together with granisetron.
Tell your doctor about all medicines you use, and those you start or stop using during your treatment with granisetron, especially:
an antibiotic--azithromycin, clarithromycin, erythromycin, levofloxacin, moxifloxacin, pentamidine;
cancer medicine--arsenic trioxide, vandetanib;
an antidepressant--citalopram, escitalopram;
anti-malaria medication--chloroquine, halofantrine;
heart rhythm medicine--amiodarone, disopyramide, dofetilide, dronedarone, flecainide, ibutilide, quinidine, sotalol; or
medicine to treat a psychiatric disorder--chlorpromazine, haloperidol, pimozide, thioridazine.
This list is not complete. Other drugs may interact with granisetron, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed in this medication guide.
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Copyright 1996-2012 Cerner Multum, Inc. Version: 10.02. Revision Date: 2014-10-28, 2:24:19 PM.
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- Drug class: 5HT3 receptor antagonists