← Drug quick-reference

Ondansetron

Brand: Zofran

Antiemetic (5-HT3 blocker)Used for: Nausea and vomitingGastrointestinal
Key warning

Caution: can prolong the QT interval and trigger abnormal heart rhythms

Common side effects

  • Headache
  • Constipation
  • Fatigue
  • Dizziness
  • Diarrhea

Key interactions & cautions

  • Serotonin syndrome risk with serotonergic drugs
  • Can prolong the heart's QT interval
  • Caution with other QT-prolonging drugs
  • Apomorphine combination causes severe low blood pressure

Counseling points

  • May take with or without food
  • Let orally disintegrating tablet dissolve on tongue
  • Report irregular or fast heartbeat
  • Report constipation
  • Use as directed for nausea
← OmeprazolePantoprazole →

High-yield study aid for exam prep — not a substitute for the package insert or a pharmacist’s dispensing reference.