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Safety Advices
বাংলা
English
SAFE
Consuming alcohol with Onstar does not cause any harmful side effects.
SAFE IF PRESCRIBED
Onstar is generally considered safe to use during pregnancy. Animal studies have shown low or no adverse effects to the developing baby; however, there are limited human studies.
SAFE IF PRESCRIBED
Onstar is probably safe to use during breastfeeding. Limited human data suggests that the drug does not represent any significant risk to the baby.
SAFE
Onstar does not usually affect your ability to drive.
SAFE IF PRESCRIBED
Onstar is safe to use in patients with kidney disease. No dose adjustment of Onstar is recommended.
However, inform your doctor if you have an underlying kidney disease. Limited information is available in patients taking this medicine for more than one day.
CONSULT YOUR DOCTOR
There is limited information available on the use of Onstar in patients with liver disease. Please consult your doctor.
Medicine Overview of Onstar 4mg/5ml Syrup
Introduction
Onstar is an antiemetic medicine commonly used to control nausea and vomiting due to certain medical conditions like stomach upset. It is also used to prevent nausea and vomiting caused due to any surgery, cancer drug therapy or radiotherapy. Onstar may be used alone or with other medications and can be taken with or without food. Your doctor will suggest the appropriate dose depending on what you are taking it for. The first dose is normally taken before the start of surgery, chemotherapy or radiotherapy. After these treatments, take any further doses as prescribed by your doctor (normally only for...
... Show moreUses of Onstar
- Nausea
- Vomiting
Side effects of Onstar
Common
- Constipation
- Diarrhea
- Fatigue
- Headache
How to use Onstar
Take this medicine in the dose and duration as advised by your doctor. Do not handle the tablets with wet hands. Put it in your mouth but do not swallow it. Onstar may be taken with or without food, but it is better to take it at a fixed time.
How Onstar works
Onstar is an antiemetic medication. It works by blocking the action of a chemical messenger (serotonin) in the brain that may cause nausea and vomiting during anti-cancer treatment (chemotherapy) or after surgery.
What if you forget to take Onstar?
If you miss a dose of Onstar, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular schedule. Do not double the dose.
Quick Tips
- You have been prescribed Ondace 4mg Tablet MD for prevention of nausea and vomiting caused after surgery or due to chemotherapy and radiotherapy.
- Unlike some other nausea medicines, the side effects for Ondace 4mg Tablet MD are relatively mild.
- It is fast-acting and starts working within 30 minutes.
- If you vomit within one hour of taking a dose, take another dose.
- Avoid heavy meals and try eating small nourishing snacks throughout the day. Also, sip water regularly to help avoid dehydration.
Brief Description
Indication
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
Administration
May be taken with or without food.
Reconstitution: Prior to IV infusion, dilute in 50 mL dextrose 5% inj or normal saline.
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...
... Show moreChild 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...
... Show moreRenal Dose
Renal impairment: Dose adjustment not necessary
Contraindication
Use with apomorphine (profound hypotension).
Mode 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.
Precaution
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.
Side Effect
>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...
... Show moreInteraction
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.
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