What should I know about Granisetron Hydrochloride before taking it?

Granisetron hydrochloride may increase the risk for a heart condition called QT prolongation. This condition, which affects the heart's rhythm, may cause serious problems such as irregular heartbeat, severe dizziness, and fainting. The risk for QT prolongation may be increased if you already have a heart problem or if you have low blood levels of potassium or magnesium. To reduce your risk for QT prolongation and other side effects, make sure to tell your doctor your full medical history before taking granisetron hydrochloride.

Taking granisetron with other drugs that increase serotonin in the brain, such as antidepressants and migraine medications, can lead to a dangerous condition called serotonin syndrome. Symptoms of serotonin syndrome include agitation, hallucinations, rapid heart rate, dizziness, tremor, seizures, nausea and vomiting. 

Continue Learning about Antiemetic

Could I be allergic to Vistaril?
Stacy Wiegman, PharmDStacy Wiegman, PharmD
Allergy symptoms are triggered by the release of a natural compound called histamine. Histamine star...
More Answers

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.