SKIN - Cellulitis - Mild (Staphylococcus aureus, Group A Streptococcus)
Cephalexin (Keflex^®) Generics available Pregnancy: B; Lactation: Unk	Children: 25-100 mg/kg/day (max 4 g/day) in divided doses three or four times daily for 10-14 days. 125 mg/5 mL @ 25 mg/kg/day (double for 50 mg/kg) 10 kg (22 lb) = ½ tsp (2.5 mL) Q6H 15 kg (33 lb) = ¾ tsp Q6H 20 kg (44 lb) = 1 tsp (5 mL) Q6H 250 mg/5 mL @ 25 mg/kg/day (double for 50 mg/kg) 20 kg (44 lb) = ½ tsp (2.5 mL) Q6H 40 kg (88 lb) = 1 tsp (5 mL) Q6H >40 kg = Use adult dose. Adult: 500 mg PO four times daily for 10-14 days.	Food: May take with food if GI upset occurs. Important side effects: GI upset, diarrhea.
Tabs: 250 mg, 500 mg, 1 g Caps: 250 mg, 500 mg Oral Susp: 125 mg/5 mL, 250 mg/5 mL		Reduce dose in renal disease (CrCl <40 mL/min).
Dicloxacillin (Dynapen^®) Generics available Pregnancy: B; Lactation: Unk Caps: 125 mg, 250 mg, 500 mg Oral Susp: 62.5 mg/5 mL, 200 mL	Children ≤40 kg: 25-50 mg/kg/day (max 2 g/day) in divided doses every 6 hours for 10-14 days. 62.5 mg/5 mL @ 25 mg/kg/day (double for 50 mg) 10 kg (22 lb) = 1 tsp (5 mL) Q6H 15 kg (33 lb) = 1½ tsp (7.5 mL) Q6H 20 kg (44 lb) = 2 tsp (10 mL) Q6H 40 kg (88 lb) = Use adult dose. Children ≥40 kg and Adult: 250-500 mg PO four times daily for 10-14 days.	Food: Take 1 hour before or 2 hours after meals. Important side effects: Bad taste, GI upset; may reduce efficacy of oral contraceptives.
Erythromycin estolate or base An alternative for patients with beta-lactam intolerance.	Children: 30-50 mg/kg/day estolate (max 2 g/day) in two to four divided doses a day for 10-14 days.	Food: May take with or without meals. Take with food if causes GI upset.
(E-mycin^®, Ilosone ^®) Generics available Pregnancy: B; Lactation: Unsafe Estolate: Tabs: 500 mg Caps: 250 mg Oral Susp: 125 mg/5 mL, 250 mg/5 mL Base: Tabs: 250 mg, 333 mg, 500 mg Caps: 250 mg	125 mg/5 mL @ 30 mg/kg/day 4 kg (10 lb) = ½ tsp (2.5 mL) Q12H 5-8 kg (11-18 lb) = 1 tsp (5 mL) Q12H 9-12 kg (20-26 lb) = 1 tsp (5 mL) Q8H 13-16 kg (29-35 lb) = 1 tsp (5 mL) Q6H or 2 tsp (10 mL) Q12H 250 mg/5 mL @ 30 mg/kg/day 13-16 kg (29-35 lb) = 1 tsp (5 mL) Q12H 17-25 kg (37-55 lb) = 1½ tsp (7.5 mL) Q12H or 1 tsp (5 mL) Q8H 26-33 kg (57-72 lb) = 250 mg Q6H or 500 mg Q12H	Important side effects: GI upset, hepatitis.
	30-50 kg (66-110 lb) = 500 mg Q8H Adult: Erythromycin base or estolate 500 mg PO four times daily for 10-14 days.
Levofloxacin (Levaquin^®) Pregnancy: C; Lactation: Unsafe Tabs: 250 mg, 500 mg	Adult: 500 mg PO once daily for 7-14 days.	Food: May take with or without meals. Do not take within 2 hours of antacids, magnesium, calcium supplements, zinc, aluminum, sucralfate, vitamins, or minerals (iron or zinc). Important side effects:Photosensitivity, dizziness. Reduce dose in renal disease (CrCl <50 mL/min).