Before Using

Drug information provided by: Merative, Micromedex®

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Appropriate studies performed to date have not demonstrated pediatric-specific problems that would limit the usefulness of ondansetron injection in children. However, safety and efficacy have not been established in children being treated for nausea and vomiting due to cancer treatments who are younger than 6 months of age or for the prevention of nausea and vomiting from surgery in children younger than 1 month of age.

Geriatric

Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of ondansetron injection in the elderly.

Breastfeeding

There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.

Drug Interactions

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are receiving this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.

  • Apomorphine
  • Bepridil
  • Cisapride
  • Dronedarone
  • Fluconazole
  • Ketoconazole
  • Levoketoconazole
  • Mesoridazine
  • Nelfinavir
  • Pimozide
  • Piperaquine
  • Posaconazole
  • Saquinavir
  • Sparfloxacin
  • Terfenadine
  • Thioridazine
  • Ziprasidone

Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Abametapir
  • Abiraterone Acetate
  • Acecainide
  • Adagrasib
  • Alfentanil
  • Alfuzosin
  • Almotriptan
  • Amineptine
  • Amiodarone
  • Amisulpride
  • Amitriptyline
  • Amitriptylinoxide
  • Amoxapine
  • Amphetamine
  • Anagrelide
  • Anileridine
  • Aripiprazole
  • Aripiprazole Lauroxil
  • Arsenic Trioxide
  • Asenapine
  • Astemizole
  • Atazanavir
  • Azimilide
  • Azithromycin
  • Bedaquiline
  • Benzhydrocodone
  • Benzphetamine
  • Bretylium
  • Brompheniramine
  • Buprenorphine
  • Bupropion
  • Buserelin
  • Buspirone
  • Butorphanol
  • Capmatinib
  • Carbamazepine
  • Ceritinib
  • Chloroquine
  • Chlorpheniramine
  • Chlorpromazine
  • Ciprofloxacin
  • Citalopram
  • Clarithromycin
  • Clofazimine
  • Clomipramine
  • Clothiapine
  • Clozapine
  • Cocaine
  • Codeine
  • Conivaptan
  • Crizotinib
  • Cyclobenzaprine
  • Dabrafenib
  • Darunavir
  • Dasatinib
  • Degarelix
  • Delamanid
  • Desipramine
  • Deslorelin
  • Desvenlafaxine
  • Deutetrabenazine
  • Dexmedetomidine
  • Dextroamphetamine
  • Dextromethorphan
  • Dibenzepin
  • Difenoxin
  • Dihydrocodeine
  • Diphenoxylate
  • Disopyramide
  • Dofetilide
  • Dolasetron
  • Domperidone
  • Donepezil
  • Doxepin
  • Droperidol
  • Duloxetine
  • Ebastine
  • Efavirenz
  • Eletriptan
  • Encorafenib
  • Enflurane
  • Entrectinib
  • Eribulin
  • Erythromycin
  • Escitalopram
  • Ethylmorphine
  • Etrasimod
  • Famotidine
  • Fedratinib
  • Felbamate
  • Fenfluramine
  • Fentanyl
  • Fexinidazole
  • Fingolimod
  • Flecainide
  • Fluoxetine
  • Fluvoxamine
  • Formoterol
  • Foscarnet
  • Fosnetupitant
  • Fosphenytoin
  • Fostemsavir
  • Frovatriptan
  • Furazolidone
  • Galantamine
  • Gatifloxacin
  • Gemifloxacin
  • Gepirone
  • Glasdegib
  • Gonadorelin
  • Goserelin
  • Granisetron
  • Halofantrine
  • Haloperidol
  • Halothane
  • Histrelin
  • Hydrocodone
  • Hydromorphone
  • Hydroquinidine
  • Hydroxyamphetamine
  • Hydroxychloroquine
  • Hydroxytryptophan
  • Hydroxyzine
  • Ibutilide
  • Iloperidone
  • Imipramine
  • Inotuzumab Ozogamicin
  • Iproniazid
  • Isocarboxazid
  • Isoflurane
  • Isradipine
  • Itraconazole
  • Ivabradine
  • Ivosidenib
  • Ketobemidone
  • Lapatinib
  • Lasmiditan
  • Lefamulin
  • Lenvatinib
  • Leuprolide
  • Levofloxacin
  • Levomilnacipran
  • Levorphanol
  • Linezolid
  • Lisdexamfetamine
  • Lithium
  • Lofepramine
  • Lofexidine
  • Lopinavir
  • Lorcaserin
  • Lumefantrine
  • Macimorelin
  • Mavacamten
  • Mefloquine
  • Melitracen
  • Meperidine
  • Metaxalone
  • Methadone
  • Methamphetamine
  • Methotrexate
  • Methylene Blue
  • Metronidazole
  • Mifepristone
  • Milnacipran
  • Mirtazapine
  • Mizolastine
  • Mobocertinib
  • Moclobemide
  • Morphine
  • Morphine Sulfate Liposome
  • Moxifloxacin
  • Nafarelin
  • Nalbuphine
  • Naratriptan
  • Nefazodone
  • Netupitant
  • Nialamide
  • Nicomorphine
  • Nilotinib
  • Norfloxacin
  • Nortriptyline
  • Octreotide
  • Ofloxacin
  • Olanzapine
  • Omaveloxolone
  • Opipramol
  • Opium
  • Opium Alkaloids
  • Osilodrostat
  • Osimertinib
  • Oxaliplatin
  • Oxycodone
  • Oxymorphone
  • Ozanimod
  • Pacritinib
  • Paliperidone
  • Palonosetron
  • Panobinostat
  • Papaveretum
  • Paregoric
  • Paroxetine
  • Pasireotide
  • Pazopanib
  • Pentamidine
  • Pentazocine
  • Perphenazine
  • Phenelzine
  • Phenobarbital
  • Pimavanserin
  • Piritramide
  • Pitolisant
  • Pixantrone
  • Ponesimod
  • Primidone
  • Probucol
  • Procainamide
  • Procarbazine
  • Prochlorperazine
  • Promethazine
  • Propafenone
  • Protriptyline
  • Quetiapine
  • Quinidine
  • Quinine
  • Quizartinib
  • Ranolazine
  • Rasagiline
  • Relugolix
  • Remifentanil
  • Ribociclib
  • Rilpivirine
  • Risperidone
  • Ritonavir
  • Rizatriptan
  • Safinamide
  • Selegiline
  • Selpercatinib
  • Sematilide
  • Sertindole
  • Sertraline
  • Sevoflurane
  • Sibutramine
  • Siponimod
  • Sodium Phosphate
  • Sodium Phosphate, Dibasic
  • Sodium Phosphate, Monobasic
  • Solifenacin
  • Sorafenib
  • Sotalol
  • St John's Wort
  • Sufentanil
  • Sulpiride
  • Sumatriptan
  • Sunitinib
  • Tacrolimus
  • Tamoxifen
  • Tapentadol
  • Tedisamil
  • Telavancin
  • Telithromycin
  • Tetrabenazine
  • Tianeptine
  • Tilidine
  • Tolterodine
  • Toremifene
  • Tramadol
  • Tranylcypromine
  • Trazodone
  • Triclabendazole
  • Trifluoperazine
  • Trimipramine
  • Triptorelin
  • Tryptophan
  • Vandetanib
  • Vardenafil
  • Vemurafenib
  • Venlafaxine
  • Vilanterol
  • Vilazodone
  • Vinflunine
  • Voclosporin
  • Voriconazole
  • Vorinostat
  • Vortioxetine
  • Zolmitriptan
  • Zuclopenthixol

Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Cyclophosphamide

Other Interactions

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following is usually not recommended, but may be unavoidable in some cases. If used together, your doctor may change the dose or how often you use this medicine, or give you special instructions about the use of food, alcohol, or tobacco.

  • Tobacco

Other Medical Problems

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:

  • Allergy to selective 5-HT3 receptor antagonists (eg, alosetron [Lotronex®], dolasetron [Anzemet®], granisetron [Kytril®], or palonosetron [Aloxi®])—Use with caution. It is likely you will also be allergic to ondansetron.
  • Bowel blockage or
  • Gastric distension (enlarged stomach)—May cover up symptoms of these stomach or bowel problems, especially in patients who had a recent stomach surgery.
  • Bradyarrhythmia (slow heartbeat) or
  • Congestive heart failure or
  • Electrolyte imbalance (eg, low potassium or magnesium in the blood)—Patients with these conditions should be monitored while using this medicine.
  • Heart rhythm problems (eg, congenital long QT syndrome)—Use is not recommended in patients with this condition.
  • Heart rhythm problems (eg, prolonged QT interval)—Use with caution. May make this condition worse.
  • Liver disease, severe—Use with caution. The effects may be increased because of slower removal of the medicine from the body.