Cefaclor is administered orally.
Adults
The usual adult dosage is 250 mg every 8 hours. For more severe infections (such as pneumonia) or those caused by less susceptible organisms, doses may be doubled.
Pediatric Patients
The usual recommended daily dosage for pediatric patients is 20 mg/kg/day in divided doses every 8 hours. In more serious infections, otitis media, and infections caused by less susceptible organisms, 40 mg/kg/day are recommended, with a maximum dosage of 1 g/day.
Table 3:
Cefaclor for Oral Suspension, USP
20 mg/kg/day
Weight
125 mg/5 mL
250 mg/5 mL
9 kg
1/2 tsp t.i.d.
18 kg
1 tsp t.i.d.
1/2 tsp t.i.d.
40 mg/kg/day
9 kg
1 tsp t.i.d.
1/2 tsp t.i.d.
18 kg
1 tsp t.i.d.
B.I.D. Treatment Option
For the treatment of otitis media and pharyngitis, the total daily dosage may be divided and administered every 12 hours.
Table 4:
Cefaclor for Oral Suspension, USP
20 mg/kg/day(Pharyngitis)
Weight
375 mg/5 mL
18 kg
1/2 tsp b.i.d.
40 mg/kg/day(Otitis Media)
9 kg
1/2 tsp b.i.d.
18 kg
1 tsp b.i.d.
Cefaclor may be administered in the presence of impaired renal function. Under such a condition, the dosage usually is unchanged (see PRECAUTIONS).
In the treatment of β-hemolytic streptococcal infections, a therapeutic dosage of cefaclor should be administered for at least 10 days.
Directions for Mixing
Add appropriate water volume as indicated in the following table in two portions to dry mixture in the bottle. Shake well after each addition.
Each 5 mL (approximately one teaspoonful) will then contain Cefaclor, USP, monohydrate equivalent to 125 mg, 250 mg or 375 mg anhydrous cefaclor, respectively, as shown in the following table.
Oversize bottle provides extra space for shaking.
Table 5:
Cefaclor For Oral Suspension, USP
StrengthPackage Size(when mixed)
Water Volume to Add
Anhydrous Cefaclor/5 mL(approx. one teaspoonful)
125 mg/5 mL 150 mL
106 mL
125 mg
250 mg/5 mL 150 mL
106 mL
250 mg
375 mg/5 mL 100 mL
68 mL
375 mg