Cefazolin Pediatric Dose by Weight (IV)

Cefazolin in PediHero: Cefazolin i.v. Tagesdosis (Infection). Doses for children from 2 to 40 kg.

Names in the data: Kefzol®

Cefazolin i.v. Tagesdosis · Infection

Kefzol®

Formula: 25–100 mg/kg/day

Notes

• Cephalosporin 1st generation; antibiotic
• Age < 1 month: Ø
• mild Inf.: 25 mg/kg/d divided in 3–4 doses/day
• moderate Inf.: 50 mg/kg/d divided in 3–4 doses/day
• severe Inf.: 100 mg/kg/d divided in 3–4 doses/day
• Note: Renal function!

Cefazolin i.v. Tagesdosis: value for each weight

Weight	Age (estimate)	Value
2 kg	preterm	— Not listed for this weight
3 kg	newborn	— Not listed for this weight
4 kg	1 mo	100–400 mg/day 100 to 400 milligrams per day
5 kg	2 mo	125–500 mg/day 125 to 500 milligrams per day
6 kg	4 mo	150–600 mg/day 150 to 600 milligrams per day
7 kg	6 mo	175–700 mg/day 175 to 700 milligrams per day
8 kg	8 mo	200–800 mg/day 200 to 800 milligrams per day
9 kg	10 mo	225–900 mg/day 225 to 900 milligrams per day
10 kg	1 y	250–1000 mg/day 250 to 1000 milligrams per day
11 kg	1 y 6 mo	275–1100 mg/day 275 to 1100 milligrams per day
12 kg	2 y	300–1200 mg/day 300 to 1200 milligrams per day
13 kg	2 y 4 mo	325–1300 mg/day 325 to 1300 milligrams per day
14 kg	2 y 8 mo	350–1400 mg/day 350 to 1400 milligrams per day
15 kg	3 y	375–1500 mg/day 375 to 1500 milligrams per day
16 kg	3 y 6 mo	400–1600 mg/day 400 to 1600 milligrams per day
17 kg	4 y	425–1700 mg/day 425 to 1700 milligrams per day
18 kg	4 y 6 mo	450–1800 mg/day 450 to 1800 milligrams per day
19 kg	5 y	475–1900 mg/day 475 to 1900 milligrams per day
20 kg	5 y 6 mo	500–2000 mg/day 500 to 2000 milligrams per day
21 kg	6 y	525–2100 mg/day 525 to 2100 milligrams per day
22 kg	6 y 4 mo	550–2200 mg/day 550 to 2200 milligrams per day
23 kg	6 y 8 mo	575–2300 mg/day 575 to 2300 milligrams per day
24 kg	7 y	600–2400 mg/day 600 to 2400 milligrams per day
25 kg	7 y 4 mo	625–2500 mg/day 625 to 2500 milligrams per day
26 kg	7 y 8 mo	650–2600 mg/day 650 to 2600 milligrams per day
27 kg	8 y	675–2700 mg/day 675 to 2700 milligrams per day
28 kg	8 y 4 mo	700–2800 mg/day 700 to 2800 milligrams per day
29 kg	8 y 8 mo	725–2900 mg/day 725 to 2900 milligrams per day
30 kg	9 y	750–3000 mg/day 750 to 3000 milligrams per day
31 kg	9 y 4 mo	775–3100 mg/day 775 to 3100 milligrams per day
32 kg	9 y 8 mo	800–3200 mg/day 800 to 3200 milligrams per day
33 kg	10 y	825–3300 mg/day 825 to 3300 milligrams per day
34 kg	10 y 3 mo	850–3400 mg/day 850 to 3400 milligrams per day
35 kg	10 y 6 mo	875–3500 mg/day 875 to 3500 milligrams per day
36 kg	10 y 9 mo	900–3600 mg/day 900 to 3600 milligrams per day
37 kg	11 y	925–3700 mg/day 925 to 3700 milligrams per day
38 kg	11 y 4 mo	950–3800 mg/day 950 to 3800 milligrams per day
39 kg	11 y 8 mo	975–3900 mg/day 975 to 3900 milligrams per day
40 kg	12 y	1000–4000 mg/day 1000 to 4000 milligrams per day

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Related drugs

• Amoxicillin
• Cefuroxime
• Ceftriaxone
• Clindamycin
• Metronidazole
• Vancomycin

Values imported unchanged on 2026-11-04. Independent verification against official sources is in progress (see Methodology).

Last updated: 2026-11-04