Cefaclor (Ceclor); Cephalosporin, 2nd generation; Cap: 250, 500 mg 
 Liq per 5 mL: 125, 187, 250, 375 mg 
 Tab, ER: 375, 500 mg; 20-40 mg/kg/day PO q8-12 (max 2 gm/day) 
 Adolescents: 250-500 mg PO q8h or 375 mg ER tab PO q12h  
Side effects include 
serum sickness reaction. May dose bid for otitis media and pharyngitis.