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Ons Injection 2 ml is used to prevent and treat nausea and vomiting during chemotherapy. Nausea is an uneasy feeling in which a person feels an urge to vomit, while vomiting is the natural response of the body to expel the stomach contents from the mouth forcefully.
Ons Injection 2 ml contains Ondansetron, which works by blocking the action of a chemical in the body (serotonin) responsible for causing nausea and vomiting.
In some cases, Ons Injection 2 ml may cause headache, constipation, a feeling of warmth or flushing, redness, and irritation at the site of injection. If the side effects persist or worsen, please consult your doctor.
If you are allergic to Ons Injection 2 ml or any other medicines, please tell your doctor. It should be given to children only in doses advised by the doctor based on the child’s body weight or body surface area. If you are pregnant or breastfeeding, you must inform your doctor before taking Ons Injection 2 ml.
Ons Injection 2 ml is used to prevent and treat nausea and vomiting caused by various medical conditions. The detailed uses of Ons Injection 2 ml are as follows:
Unsafe
Avoid consuming alcohol while taking Ons Injection 2 ml as this medicine can interact with alcohol and may worsen the side effects.
Consult your doctor
If you are pregnant, inform your doctor before taking Ons Injection 2 ml. Your doctor will weigh the benefits and risks before prescribing this medicine.
Consult your doctor
If you are a nursing mother, inform your doctor before taking Ons Injection 2 ml. Your doctor will weigh the benefits and risks before prescribing this medicine.
Caution
Ons Injection 2 ml usually does not affect your driving ability. However, do not drive if you feel any discomfort.
Caution
Take Ons Injection 2 ml with caution, especially if you have a history of Liver diseases/conditions. The dose may be adjusted by your doctor as required.
Safe if prescribed
Ons Injection 2 ml may be safe to use in patients with kidney problems if prescribed by a doctor.
Consult your doctor
Ons Injection 2 ml should be used in children only in doses advised by the doctor based on child’s body weight or body surface area.
Caution
Ons Injection 2 ml may be used in heart patients but requires caution due to risk of QT prolongation. ECG monitoring is advised to prevent serious arrhythmias, especially in those with existing cardiac conditions.
Caution
Ons Injection 2 ml can be used in geriatric patients, but with caution. Older adults may be more sensitive to side effects like QT prolongation, so ECG monitoring is often recommended during treatment.

Have a query?
Drug-Drug Interaction: Ons Injection 2 ml may interact with anticonvulsants (phenytoin, carbamazepine), antituberculosis drug (rifampicin), antibiotics (erythromycin), antifungal (ketoconazole), narcotic analgesics (tramadol, methadone), beta-blockers, anti-arrhythmic medicines, antidepressants (citalopram, fluoxetine, fluvoxamine, paroxetine, sertraline, escitalopram, duloxetine, venlafaxine), chemotherapy drugs (anthracyclines, trastuzumab) and antipsychotic (haloperidol).
Drug-Food Interaction: No interactions found.
Drug-Disease Interaction: If you have a blockage in the gut, liver or heart problems, an imbalance of potassium, sodium and magnesium in the blood, inform your doctor before taking Ons Injection 2 ml.
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Ons Injection 2 ml belongs to a class of drugs called antiemetics used to prevent nausea and vomiting during chemotherapy.
Ons Injection 2 ml works by blocking the action of serotonin, a chemical that stimulates the vomiting center (chemoreceptor trigger zone – CTZ) located in the brain. Thus, it prevents nausea and vomiting.
You are not recommended to take erythromycin with Ons Injection 2 ml as it may increase the risk of severe irregular heart rhythm. However, please consult your doctor before taking other medicines with Ons Injection 2 ml.
Ons Injection 2 ml may cause constipation as a side effect. It is not necessary for everyone taking Ons Injection 2 ml to experience this side effect. However, if the condition persists or worsens, please consult a doctor.
Ons Injection 2 ml should be used with caution in patients suffering from liver problems. However, inform your doctor if you have any liver problems before taking Ons Injection 2 ml so that the dose may be adjusted appropriately.
Yes, Ons Injection 2 ml may be used to prevent nausea and vomiting after surgery. Ons Injection 2 ml blocks serotonin (a chemical) action which is responsible for causing nausea and vomiting.
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