Optus (4 mg):
| Trade Name | Optus (4 mg) | 
| Ingredients | Ondansetron (2 mg) | 
| Category | |
| Type | Injection | 
| Packing | 1 x2 ml | 
| Manufacturer | Oneiro Pharmaceuticals Pvt.Ltd click here!! | 
Substitute Medicines List:
- Emeset (30 ml) (Syrup) - Cipla Ltd
- Emeset Inj (4 mg) (Injection) - Cipla Ltd
- Emeset Inj (8 mg) (Injection) - Cipla Ltd
- Higo (8 mg) (Injection) - Health Care Formulations Pvt. Ltd.
- Oset (30 ml) (Syrup) - Medley Pharmaceuticals Ltd.
- Soset (4 mg) (Injection) - Savoy Biotech
- Naucid Inj (4 mg) (Injection) - Abbott Healthcare Pvt Ltd (AHPL)
- Reset (30 ml) (Drop) - Greenray Pharmaceuticals (P) Ltd
- ON J (2 mg) (Injection) - Jeen Healthcare
- Vomidot (30 ml) (Syrup) - Elfin Pharma Pvt Ltd
- Aerodol (4 mg) (Injection) - Aero-Chem Neutron Pvt Ltd
- Ondar (4 mg) (Injection) - Zota Healthcare Pvt Ltd