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nereus

Nereus (Tradipitant) is a medication used to treat Motion Sickness.

Tradipitant · by Vanda Pharms Inc

Not yet rated· sourced from the FDA label
Rated against independent regulatory sources·Last updated June 7, 2026·How we rate
Verified againstopenFDANIH DailyMedRxClass

Key facts

Active ingredient
Tradipitant
Form
Capsule
Strength
Tradipitant 85MG
Type
Prescription (Rx)
Brand or generic
Brand-name
Manufacturer
Vanda Pharms Inc
FDA application
NDA220152

What is Nereus?

From the FDA label:NEREUS (tradipitant) is a substance P/neurokinin-1 (NK-1) receptor antagonist designated by the chemical name, as {2-[1-(3,5-Bistrifluoromethylbenzyl)-5-pyridin-4-yl-1H-[1,2,3]triazol-4- yl]-pyridin-3-yl}-(2-chlorophenyl)-methanone, with molecular formula C 28 H 16 C l F 6 N 5 O, and molecular weight 587.9. The chemical structure for tradipitant is: Tradipitant is a white to off-white crystalline powder. It is practically insoluble in water, soluble in methanol, and slightly soluble in isopropyl alcohol and simulated gastric fluid. NEREUS is supplied as white opaque body capsules with “VANDA 85mg” printed in white on the black opaque cap for oral administration, each containing 85 mg tradipitant. Inactive ingredients are croscarmellose sodium, lactose monohydrate, magnesium stearate, microcrystalline cellulose, povidone, and sodium lauryl sulfate. The capsule contains FD&C blue No 1, FD&C red No 40, and FD&C yellow No 6, gelatin, and titanium dioxide. Chemical Structure

How to use

The recommended dosage of NEREUS is 85 mg or 170 mg as a single oral dose approximately 60 minutes before an event expected to cause vomiting induced by motion. The safety of NEREUS for the prevention of vomiting induced by motion in adults for more than 90 doses has not been established in clinical trials. ( 2.1 ) The maximum dosage in a 24-hour period is a single dose of 85 mg or 170 mg. ( 2.1 ) Administer on an empty stomach, at least 1 hour prior to or 2 hours after a full meal. ( 2.1 ) 2.1 Recommended Dosage and Administration The recommended dosage of NEREUS is 85 mg or 170 mg as a single oral dose. Use the lowest effective dose. The safety of NEREUS for the prevention of vomiting induced by motion in adults for more than 90 doses has not been established in clinical trials [see Adverse Reactions (6.1) ] . Administer NEREUS orally approximately 60 minutes before an event expected to cause vomiting induced by motion. The maximum dosage in a 24-hour period is a single dose of 85 mg or 170 mg. Administer NEREUS on an empty stomach, at least 1 hour prior to or 2 hours after a full meal [see Clinical Pharmacology (12.3) ] .

Side effects

Most common adverse reactions (incidence ≥5%) are: somnolence, headache, and fatigue. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Vanda Pharmaceuticals Inc. at 1-844-GO-VANDA (1-844-468-2632) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The safety of a single 85 mg or 170 mg dose of NEREUS was evaluated in adult subjects with a history of motion sickness in two randomized, double-blind, placebo-controlled trials, Study 1 and Study 2 [see Clinical Studies (14) ] . Additional safety data for the 170 mg dose of NEREUS were obtained from a randomized, double-blind, placebo-controlled trial, Study 3 (NCT03772340). Adverse reactions reported in at least 5% of subjects treated with a single NEREUS 85 mg or 170 mg dose and at a higher frequency than subjects who received placebo, are shown in Table 1 . Table 1: Adverse Reactions a in Adult Subjects with a History of Motion Sickness in Single-Dose, Placebo-Controlled Studies Among Subjects Receiving NEREUS a Reported in at least 5% of subjects and at a higher frequency than placebo. b NEREUS was administered as a single 85 mg…

Warnings

Important safety information

Effects on the Ability to Drive or Operate Machinery: May impair mental and/or physical abilities required for driving a motor vehicle or operating heavy machinery. Concomitant use of other drugs that cause central nervous system depression and strong CYP3A4 inhibitors may increase this effect. If concomitant use is unavoidable, warn patients against driving and other activities requiring complete mental alertness. ( 5.1 , 7.1 ) 5.1 Effects on the Ability to Drive or Operate Machinery In placebo-controlled clinical trials, somnolence (6%, 12%) and fatigue (6%, 8%) were adverse reactions reported in subjects who took a single dose of 85 mg or 170 mg NEREUS, respectively [see Adverse Reactions (6.1) ] . NEREUS may impair the mental and/or physical abilities required for driving a motor vehicle or operating heavy machinery. Concomitant use of other drugs that cause central nervous system depression and strong CYP3A4 inhibitors may increase this effect [see Drug Interactions (7.1) ] . If concomitant use is unavoidable, warn patients against driving and other activities requiring complete mental alertness.

Who should not take Nereus

None. None. ( 4 )

Interactions

Strong CYP3A4 Inhibitors: May increase tradipitant exposure and the risk of adverse reactions. ( 7.1 ) 7.1 Effects of Other Drugs on NEREUS Strong CYP3A4 Inhibitors Tradipitant is a CYP3A4 substrate. Strong CYP3A4 inhibitors may increase tradipitant exposure, which may increase the risk of adverse reactions to NEREUS.

Storing Nereus, and how long it keeps

Quoted from this product’s own FDA label. Storage belongs to the product and its device, not to the drug in general — a pen and a tablet of the same medicine are kept completely differently.

  • Store NEREUS capsules at controlled room temperature, 25°C (77°F); excursions permitted to 15°C to 30°C (59° - 86°F) [See USP Controlled Room Temperature].

May treat (source: NIH RxClass)

Dosage forms

Capsule

The forms currently marketed in the U.S., per the FDA National Drug Code Directory.

Ways to save

Ask for the generic

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Request a 90-day supply

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Use copay cards

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Frequently asked questions

What does Nereus treat?
Nereus (Tradipitant) may be used to treat motion sickness, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
Is there a coupon or discount for Nereus?
pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Nereus. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
Who makes Nereus?
Nereus is marketed by Vanda Pharms Inc. You can see Vanda Pharms Inc's full profile, rating, and other products on pharmaranks.
Is Nereus a brand-name or generic drug?
Nereus is a brand-name product with the active ingredient Tradipitant.
Is Nereus available over the counter?
No. Nereus is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
What forms does Nereus come in?
Nereus is currently marketed as capsule, per the FDA's National Drug Code Directory.
Is Nereus FDA-registered?
Nereus is on record with the U.S. FDA under application number NDA220152. You can verify this on its official FDA label.
Is Nereus safe?
There's no single safe-or-not verdict, and we don't yet have a composite recall-safety score for Nereus. Review its FDA-label side effects and warnings below, and always consult a licensed professional.
What are the side effects of Nereus?
Nereus's side effects are taken directly from its FDA label. From the label: Most common adverse reactions (incidence ≥5%) are: somnolence, headache, and fatigue. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Vanda Pharmaceuticals Inc. at 1-844-GO-VANDA (1-844-468-2632) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .… Both common and serious reactions are documented in full on this page. This is general reference from the FDA, not medical advice — always consult a professional.

Clinical content sourced from the FDA label via openFDA (U.S. FDA). View the FDA label on DailyMed → Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.

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