What is Ondansetron?

Category: Prescription Drugs

Most popular types: Zofran Zofran ODT Novo-Ondansetron Show all

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Ondansetron is an antiemtic drug used to prevent nausea and vomiting following chemotherapy, radiation therapy, or surgery.

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Nausea 489 138
Kidney stone 72 10
Cyclic vomiting syndrome 64 5
Gastroparesis 24 8
Vomiting 20 4

Show all 69 reasons taken


  • Major
  • Moderate
  • Slight
  • None
  • Can't tell

Side effects

Side effects as an overall problem

Side effects as an overall problem
Severity Evaluations Percentage
Severe 8
Moderate 18
Mild 39
None 182

Commonly reported side effects and conditions associated with Ondansetron

Side effect Patients Percentage
Constipation 13
Headaches 12
Drowsiness 7
Dizziness 4
Sleepiness 4
Tiredness 4

Show all 28 reported side effects

Dosages

Based on patients currently taking Ondansetron

Dosage Patients Percentage
4mg as needed 22
8mg as needed 11
8 mg daily 4
4 mg three times daily 3
8 mg three times daily 3
8 mg twice daily 2
4 mg daily 1
4 mg twice daily 1
4 mg four times daily 1
4 mg five times daily 1

See all 11 dosages

Why patients stopped taking Ondansetron

Multiple reasons could be selected

Reason Patients Percentage
Course of treatment ended 43
Other 33
Did not seem to work 27
Doctor's advice 16
Side effects too severe 15
Change in health plan coverage 8
Expense 6
Personal research 1
See all 126 patients who've stopped taking Ondansetron

Duration

Currently taking Ondansetron

Duration Patients Percentage
1 - 6 months 1
1 - 2 years 4
2 - 5 years 16
5 - 10 years 23
10 years or more 6

Stopped taking Ondansetron

Duration Patients Percentage
Less than 1 month 48
1 - 6 months 32
6 months - 1 year 11
1 - 2 years 15
2 - 5 years 17
5 - 10 years 7
10 years or more 2
Adherence
Adherence Evaluations Percentage
Always 181
Usually 37
Sometimes 23
Never taken as prescribed 6
Burden
Burden Evaluations Percentage
Very hard to take 5
Somewhat hard to take 10
A little hard to take 18
Not at all hard to take 214
Cost per month
Cost per month Evaluations Percentage
$200+ 1
$100-199 3
$50-99 2
$25-49 18
< $25 96
Not specified 127

What people switch to and from

Patients started taking Ondansetron after stopping:

Treatment Patients Percentage
Promethazine (Phenergan) 29
Metoclopramide (Reglan) 5
Prochlorperazine (Compazine) 3
Belladonna-phenobarbital (Donnatal) 1
Bismuth subsalicylate (Pepto-Bismol) 1

Show all 11 treatments patients report switching from

Patients stopped taking Ondansetron and switched to:

Treatment Patients Percentage
Promethazine (Phenergan) 15
Prochlorperazine (Compazine) 5
Medical marijuana (Cannabidiol/Tetrahydrocannabinol Balanced Mixture) 2
Metoclopramide (Reglan) 2
Trimethobenzamide (Tigan) 2

Show all 12 treatments patients report switching to

Last updated:

14 patient evaluations for Ondansetron

Jul 1, 2019 (Started Jun 19, 2018)

  • Effectiveness
    Moderate (for nausea)
  • Side effects
    None
  • Adherence
    Usually
  • Burden
    Not at all hard to take
Dosage: 8 mg Twice daily
Cost: < $25 monthly

  • 0 helpful marks

Aug 24, 2017 (Started Jun 30, 2012)

  • Effectiveness
    Major (for nausea)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: As needed
Cost: $25-49 monthly

Aug 27, 2016 (Started Jun 30, 2012)

  • Effectiveness
    Major (for nausea)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: As needed

  • 0 helpful marks

Sep 16, 2016 (Started Aug 15, 2014)

  • Effectiveness
    Major (for nausea and vomiting)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: As needed

  • 0 helpful marks
Last updated:
Showing 3 of 14 patient evaluations for Ondansetron