How many 4mg ondansetron can I take a day?
Adults typically take one 8-mg tablet or rapidly disintegrating tablet or 10 mL of liquid twice a day. For patients ages 12 and older, the dosage is the same as for adults. For those ages 4 to 11, patients should take a 4-mg tablet or rapidly disintegrating tablet or 5 mL of liquid three times per day.
What should I monitor before giving ondansetron?
Monitor for any symptoms of QT-interval prolongation and torsades de pointes. Seek medical care immediately if any of these symptoms occur: Faintness, lightheadedness, arrhythmia, shortness of breath, and dizziness. Therefore, avoid giving ondansetron in patients with congenital prolonged QT-interval syndrome.
How many ondansetron can I take a day?
Adults—One 8-milligram (mg) film three times a day. Children—Use and dose must be determined by your doctor.
When should you take ondansetron?
Adults and children 12 years of age and older—At first, 8 milligrams (mg) taken 30 minutes before starting cancer treatment. The 8-mg dose is taken again 8 hours after the first dose. Then, the dose is 8 mg every 12 hours for 1 to 2 days.
How long does it take for ondansetron to kick in?
You can take ondansetron with or without food. It should start to work within 30 minutes to an hour. Ondansetron tablets are available in 2 different forms – tablets or oral disintegrating tablets (also called ODT). Tablets: Swallow the tablets with a glass of water.
What can you not take with ondansetron?
Some products that may interact with this drug are: apomorphine, tramadol. Many drugs besides ondansetron may affect the heart rhythm (QT prolongation), including dofetilide, pimozide, procainamide, amiodarone, quinidine, sotalol, macrolide antibiotics (such as erythromycin), among others.
Can you take ondansetron on an empty stomach?
To prevent nausea after surgery, take ondansetron by mouth 1 hour before the start of surgery. This medication may be taken with or without food. However, your doctor may tell you not to eat before chemotherapy, radiation, or surgery.
What is a common side effect of ondansetron?
confusion. nausea, vomiting, or diarrhea. loss of coordination. stiff or twitching muscles.