Preventive treatment: 

For adults and children aged over 12 years: 2-3 times a day, 1 ampoule each time, slow intravenous injection; 

For severe cases, the dose can be increased to 2 ampoules each time. 

For children aged 6-12: 2-3 times a day, 1 ampoule each time. 

For children aged 2-6: tid, 1/2 ampoule each time. 

For children aged under 2 years: bid, 1/2 ampoule each time. 

All doses are injected intravenously and slowly. 

Treatment of Infant Respiratory Distress Syndrome (IRDS): 

Based on infant weight, the total daily dosage is 30mg/kg, and is given in 4 times. 

The injector pump should be used for administration, and the intravenous injection time should be at least 5 minutes. 

The injection can also be mixed with glucose, fructose, saline or Ringer's solution for intravenous drip. 

This product (pH5.0) must not be mixed with other solutions whose pH is greater than 6.3, because the increase of pH will lead to the precipitation of Ambroxol free base.