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Ondansetron

Ondansetron is a covered generic medication on Tab's $0 list. Here's what it's used for, typical dosing, and side effects, sourced from FDA-approved drug labeling.

$0 with active Tab membership Oral Serotonin-3 Receptor Antagonist [EPC]

What it's used for

Ondansetron is used to prevent nausea and vomiting associated with highly or moderately emetogenic cancer chemotherapy, radiation therapy, and postoperative nausea and vomiting.

Source: U.S. FDA-approved prescribing information (openFDA).

Typical dosing

Dosage regimens vary for adult and pediatric patients depending on the indication, and patients with severe hepatic impairment should not exceed a total daily dose of 8 mg.

Dosing shown here is the general FDA-labeled range. Your prescribing clinician determines the exact dose, form, and schedule for you — this is not a substitute for medical advice.

What it looks like

Ondansetron pill, reference photo

Illustrative only — appearance varies by manufacturer and strength. Photo credit: NLM.

Common side effects

The most common adverse reactions in adults for chemotherapy prevention include headache, fatigue, and constipation.

Covered strengths on the Tab $0 list

Ondansetron 4mg/5 mL Oral SolutionOndansetron 8mg Tablet

Covered at $0 with an active Tab membership when filled at a participating pharmacy nationwide or through mail order. A licensed clinician must prescribe the medication.

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Tab is a membership and prescription-discount program—not insurance, and not a substitute for it. $0 pricing applies to medications on the current covered generic list with active membership, at participating pharmacy locations nationwide or through mail order, and is subject to change. Mail-order home delivery is preferred for recurring prescriptions; activation, availability, and delivery timing apply. This page is for general reference, drawn from FDA-approved drug labeling, and is not medical advice. Only a licensed clinician can determine if a medication is right for you.