Table 3.

Dosage regimen recommendations to attain a therapeutic range of phenobarbital based on the age and weight of the individual dogs.

Weight (kg)		Age (years)
		≤1	1–7	≥7
Less than 10	Loading dose.	25 mg/kg single dose.	25 mg/kg single dose.	20 mg/kg/24 h from 0 to 48 h.
	Progression dose.	5 mg/kg/12 h from 24 h for 5 days	5 mg/kg/12 h from 24 h for 5 days	3 mg/kg/12 h for 5 days
	Maintenance dose.	8 mg/kg/12 h	6 mg/kg/12 h	5 mg/kg/12 h
10 to 25	Loading dose.	25 mg/kg single dose	25 mg/kg single dose.	20 mg/kg single dose
	Progression dose.	4 mg/kg/12 h from 24 h for 5 days	3 mg/kg/12 h from 24 h for 5 days	–
	Maintenance dose.	6 mg/kg/12 h	5 mg/kg/12 h	4 mg/kg/12 h
More than 25	Loading dose.	25 mg/kg single dose.	20 mg/kg single dose	20 mg/kg single dose
	Progression dose.	3 mg/kg/12 h from 24 h for 5 days	–	–
	Maintenance dose.	5 mg/kg/12 h	3 mg/kg/12 h	3 mg/kg/12 h