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Granisetron: uses, side effects & brands
Granisetron prevents nausea/vomiting from chemotherapy and surgery. It belongs to the Anti-nausea (chemotherapy) group. These prevent the strong nausea and vomiting caused by chemotherapy or surgery.
Drug type — dosing is set by your doctor
| Measure | Range |
|---|---|
| Drug class | Anti-nausea (chemotherapy) |
| Type | Prescription |
| Dose | Individual — ask your doctor or pharmacist |
What it is used for
- Preventing nausea and vomiting from chemotherapy
- Preventing nausea from radiotherapy
- Preventing and treating nausea after surgery
Common brand names
- India: Graniset, Emigran
- Worldwide: Kytril, Sancuso
Common side effects
- Constipation
- Headache
- Tiredness or weakness
- Skin redness or itch under the patch (patch form)
Before taking it — precautions
- Tell your doctor about heart-rhythm problems or a long QT interval
- Tell your doctor if you have bowel blockage or recent bowel surgery
- Mention antidepressants or migraine medicines (risk of serotonin syndrome)
When to see a doctor urgently
- Palpitations, fainting or a very fast heartbeat (urgent)
- Severe constipation or swollen, painful belly
- Facial swelling, rash or breathing difficulty (urgent)
Frequently asked questions
Does granisetron work on nausea that has already started?
It works best when given before chemotherapy or surgery to prevent sickness. Your team may add other medicines if nausea breaks through.
Is there a patch form?
Yes, in some places granisetron comes as a skin patch applied before chemotherapy, as well as tablets and injection.
Why do I feel constipated on it?
Granisetron slows the gut a little. Drinking enough fluids and asking your doctor about a gentle laxative usually helps.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.