Dosage
        Phenylephrine (HCl)'s dosage details are as follows:
        
            
                | Dose | Single Dose | Frequency | Route | Instructions | 
            
                | Adult Dosage | 
            | 0.25 to 0.5 % | 0.38 (0.375) | 4 hourly | Nasal | As Required | 
| 10 % | 10 (10) | As recommended. | Ophthalmic | drops | 
            
                | Paedriatic Dosage (20kg) | 
            | 0.25 to 0.5 % | 0.38 (0.375) | 4 hourly | Nasal | As Required | 
            
                | Neonatal Dosage (3kg) | 
            | 0.25 to 0.5 % | 0.38 (0.375) | 4 hourly | Nasal | Not recommended under 3 months of child |