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Sustol

Generic name: granisetron

What is Sustol used for?

  • Sustol is used to prevent upset stomach and throwing up.

Before taking Sustol, tell your doctor:

  • If you are allergic to Sustol; any part of this medicine; or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
  • If you have kidney problems.

This is not a list of all drugs or health problems that interact with this medicine.

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take Sustol with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take Sustol?

  • Tell all of your health care providers that you take Sustol. This includes your doctors, nurses, pharmacists, and dentists.
  • Tell your doctor if you are pregnant, plan on getting pregnant, or are breast-feeding. You will need to talk about the benefits and risks to you and the baby.
  • It is common to have injection site reactions with Sustol. Some injection site reactions may happen up to 2 weeks or more after getting Sustol. Some of these reactions may be very bad and need treatment. Talk with your doctor.
  • Allergic reactions may happen up to 7 days or more after getting Sustol. Talk with your doctor.

How is Sustol best taken?

Use Sustol as ordered by your doctor. Read all information given to you. Follow all instructions closely.

  • It is given as a shot into the fatty part of the skin.

What do I do if I miss a dose?

  • Call your doctor to find out what to do.

What are the side effects of Sustol that I need to call my doctor about immediately?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Chest pain or pressure.
  • Fast or abnormal heartbeat.
  • Very bad dizziness or passing out.
  • Shortness of breath.
  • Fever, chills, or sore throat.
  • Stomach pain.
  • Swelling of belly.
  • A severe and sometimes deadly problem called serotonin syndrome may happen. The risk may be greater if you also take certain other drugs. Call your doctor right away if you have agitation; change in balance; confusion; hallucinations; fever; fast or abnormal heartbeat; flushing; muscle twitching or stiffness; seizures; shivering or shaking; sweating a lot; severe diarrhea, upset stomach, or throwing up; or very bad headache.
  • Injection site pain or tenderness that you need to take a pain drug for or that causes problems with daily living.
  • Area that feels hard or bruise at the injection site that does not go away.
  • Signs of infection at the injection site like redness, warmth of the skin, or fever.
  • Bleeding at the injection site that is very bad or lasts longer than 24 hours.
  • Constipation that may be very bad can happen with Sustol. This can happen up to 7 days after getting Sustol. Some people have had to go to the hospital to be treated for very bad constipation. Call your doctor right away if you have constipation or if it gets worse after you use Sustol.

What are some other side effects of Sustol?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

  • Headache.
  • Feeling dizzy, tired, or weak.
  • Diarrhea or constipation.
  • Heartburn.
  • Trouble sleeping.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.

If overdose is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out Sustol?

  • If you need to store Sustol at home, talk with your doctor, nurse, or pharmacist about how to store it.

Consumer information use and disclaimer

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else's drugs.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
  • This medicine comes with an extra patient fact sheet called a Medication Guide. Read it with care. Read it again each time Sustol is refilled. If you have any questions about Sustol, please talk with the doctor, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

This information should not be used to decide whether or not to take Sustol or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to Sustol. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

Source: Wolters Kluwer Health. Last updated August 20, 2020.