Zofran Tablets
Ondansetron
8mg
Glaxo Wellcome GmbH & Co.
| Pack size | 10's (5's Blister x 2) |
|---|---|
| Dispensing mode | POM |
| Source | GERMANY |
| Agent | CITY MEDICAL STORE |
| Retail Price | 529.50 AED |
Indications
Zofran Tablets is used for:
Prevention of nausea-vomiting associated with chemotherapy, Prevention of nausea & vomiting associated with radiotherapy, Prevention of post-operative nausea & vomiting, Nausea-vomiting in gastroenteritis, Nausea vomiting in pregnancy
Adult Dose
Oral
Adult:
Prevention of nausea & vomiting associated with chemotherapy:
Highly emetogenic chemotherapy: 24 mg once 30 minutes before start of single-day chemotherapy.
Moderately emetogenic chemotherapy: 8 mg (one 8 mg tablet) administered 30 minutes before start of emetogenic chemotherapy. A further 8 mg dose should be administered after 8 hours of the first dose. One 8 mg tablet should be administered twice a day (every 12 hours) for 1-2 days after completion of chemotherapy.
Prevention of nausea & vomiting associated with radiotherapy:
Total body irradiation: 8 mg 1-2 hours before each fraction of radiotherapy administered each day.
Single high-dose fraction radiotherapy to abdomen: 8 mg 1-2 hours before radiotherapy, then 8 mg every 8 hours after 1st dose for 1-2 days after radiation completed.
Daily fractionated radiotherapy to abdomen: 8 mg 1-2 hours before radiotherapy, then 8 mg every 8 hours after 1st dose for each day of radiotherapy.
Prevention of post-operative nausea & vomiting:
16 mg 1 hour before induction of anesthesia.
Nausea-vomiting in gastroenteritis
Adult: 8 mg three times daily.
Nausea vomiting in pregnancy
8 mg 2-3 times daily
Parenteral
Prevention of nausea-vomiting associated with chemotherapy
0.15 mg/kg IV over 15 min administered 30 min before chemotherapy, then 4 and 8 hr after first dose; not to exceed 16 mg
Prevention of post-operative nausea-vomiting
4 mg IV/IM immediately before anesthesia or after procedure.
The rate of administration should not be less than 30 seconds, preferably over 2 to 5 minutes.
Rectal
Nausea and vomiting associated with cancer chemotherapy
Adult: As suppository: 16 mg given 1-2 hr prior to treatment.
Elderly: No dosage adjustment needed.
Severe hepatic impairment (Child-Pugh score ?10): Not to exceed 8 mg/day
Child Dose
Oral
Moderate emetogenic cancer chemotherapy:
Child (4-11 years): 4 mg tablet should be taken 30 minutes before the start of chemotherapy.
The other 2 doses should be taken 4 and 8 hours after the first dose. Then 4 mg tablet should be administered 3 times a day (every 8 hours) for 1-2 days after completion of chemotherapy.
Prevention of nausea & vomiting associated with radiotherapy:
Child >12 years
Total body irradiation: 8 mg 1-2 hours before each fraction of radiotherapy administered each day.
Single high-dose fraction radiotherapy to abdomen: 8 mg 1-2 hours before radiotherapy, then 8 mg every 8 hours after 1st dose for 1-2 days after radiation completed.
Daily fractionated radiotherapy to abdomen: 8 mg 1-2 hours before radiotherapy, then 8 mg every 8 hours after 1st dose for each day of radiotherapy.
Nausea-vomiting in gastroenteritis
Children (>1 month): 0.15 mg/kg body weight three times daily.
Prevention of post-operative nausea-vomiting
Child >12 years: 16 mg 1 hour before induction of anesthesia.
Parenteral
Prevention of nausea-vomiting associated with chemotherapy
Child>6 months: 0.15 mg/kg IV over 15 min administered 30 min before chemotherapy, then repeated 4 and 8 hr after first dose; not to exceed 16 mg/dose
Prevention of post-operative nausea-vomiting
Child: 1 month-12 yrs (<40 kg): 0.1 mg/kg;
40 kg: 4 mg.
Give IV as single dose immediately before induction of anesthesia; or shortly post-op if nausea or vomiting occurs.
The rate of administration should not be less than 30 seconds, preferably over 2 to 5 minutes.
Renal Dose
Renal impairment: Dose adjustment not necessary
Administration
May be taken with or without food.
Reconstitution: Prior to IV infusion, dilute in 50 mL dextrose 5% inj or normal saline.
Contra Indications
Use with apomorphine (profound hypotension).
Precautions
May mask progressive ileus and/or gastric distension. Severe hepatic impairment. Pregnancy and lactation. Monitoring Parameters ECG monitoring of patients w/ electrolytes abnormalities e.g. hypomagnesaemia or hypokalaemia, CHF or bradyarrhythmias and on medication that can prolong QT interval.
Pregnancy-Lactation
Interactions
May reduce analgesic effect of tramadol. Rifampicin and other CYP3A4 inducers may reduce levels/effects of ondansetron. Concomitant use of QT-prolonging agents (e.g. antiarrhythmics) may cause additive prolongation of QT interval. May increase the risk of arrhythmias w/ cardiotoxic drugs (e.g. anthracyclines).
Potentially Fatal: May increase the hypotensive effect of apomorphine.
Adverse Effects
Side effects of Ondansetron :
>10%
Headache (9-27%), Malaise/fatigue (9-13%), Constipation (6-11%)
1-10%
Hypoxia (9%), Drowsiness (8%), Diarrhea (2-7%), Dizziness (7%), Fever (2-8%), Gynecologic disorder (7%), Anxiety (6%), Urinary retention (5%), Pruritus (2-5%), Injection-site pain (4%), Paresthesia (2%), Cold sensation (2%), Elevated liver function test results (1-5%)
<1%
Cardiac: Arrhythmias (including ventricular and supraventricular tachycardia, premature ventricular contractions, and atrial fibrillation), bradycardia, electrocardiographic alterations (including second-degree heart block, QT/QTc interval prolongation, and ST segment depression), palpitations, and syncope; rarely and predominantly with intravenous ondansetron, transient ECG changes including QT/QTc interval prolongation have been reported
Gastrointestinal: Nausea and vomiting
Anaphylaxis
ECG alterations: Arrhythmias; prolongation of PR, QRS, and QT intervals
Hepatobiliary: Specific hepatic enzyme abnormalities, hepatic necrosis, and abnormal hepatic function
General: Flushing, rare cases of hypersensitivity reactions, sometimes severe (eg, anaphylactic reactions, angioedema, bronchospasm, cardiopulmonary arrest, hypotension, laryngeal edema, laryngospasm, shock, shortness of breath, stridor)
Local reactions: Pain, redness, and burning at injection site
Lower respiratory: Hiccups
Neurological: Oculogyric crisis, appearing alone, as well as with other dystonic reactions; transient dizziness during or shortly after intravenous infusion
Skin and subcutaneous tissue: Urticaria, Stevens-Johnson syndrome, and toxic epidermal necrolysis
Eye Disorders: Transient blindness (predominantly during IV administration) reported to resolve within a few minutes up to 48 hr; transient blurred vision
Musculoskeletal and connective tissue: Arthralgia
Mechanism of Action
Ondansetron antagonises selective 5-HT3-receptor, blocking serotonin, both peripherally on vagal nerve terminals and centrally in the chemoreceptor trigger zone. This action of ondansetron gives it its antiemetic property to prevent emesis due to acute chemotherapy mediated by serotonin.
Note
Zofran 8mg Tablets manufactured by Glaxo Wellcome GmbH & Co.. Its generic name is Ondansetron. Zofran is availble in United Arab Emirates.
Farmaco UAE drug index information on Zofran Tablets is not intended for diagnosis, medical advice or treatment; neither intended to be a substitute for the exercise of professional judgment.