Pyrazinamide (Z)

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Update: January 2022

 

Forms and strengths

  • 400 mg tablet
  • 150 mg dispersible tablet, to be dispersed in 10 ml water

Dosage

  • Child under 30 kg: 35 mg/kg (30 to 40 mg/kg) once daily
  • Child 30 kg and over and adult: 25 mg/kg (20 to 30 mg/kg) once daily
  • Maximum dose: 2000 mg daily
  • Renal insufficiency: 25 mg/kg 3 times a week

 

Weight
(kg)

Daily dose
(mg)

400 mg
tablet

150 mg
dispersible tablet

5

150-200

1 tab

6

180-240

1 tab

7

210-280

2 tab

8

240-320

2 tab

9

270-360

2 tab

10

300-400

3 tab

11

330-440

3 tab

12

360-480

3 tab

13

390-520

3 tab

14

420-560

3 tab

15

450-600

3 tab

16

480-640

4 tab

17

510-680

4 tab

18

540-720

4 tab

19

570-760

4 tab

20

600-800

5 tab

21

630-840

5 tab

22

660-880

5 tab

23

690-920

5 tab

24

720-960

2½ tab

25

750-1000

2½ tab

26

780-1040

2½ tab

27

810-1080

2½ tab

28

840-1120

2½ tab

29

870-1160

2½ tab

 

30-35

800

2 tab

36-45

1000

2½ tab

46-55

1200

3 tab

56-70

1600

4 tab

> 70

2000

5 tab

 

Contra-indications, adverse effects, precautions

  • Do not administer to patients with severe hepatic impairment or severe gout.
  • May cause:
    • gout and arthralgias; 
    • hepatotoxicity, gastrointestinal disturbances (epigastric pain, nausea and vomiting);
    • hypersensitivity reactions;
    • rarely, photosensitivity.
  • For the management of adverse effects, see Appendix 17.
  • Pregnancy: no contra-indication 
  • Breastfeeding: no contra-indication

Monitoring

  • Symptomatic monitoring.
  • Liver function in patients with hepatic impairment or on drug-resistant TB treatment.  

Patient instructions

  • Take with or without food.
  • 150 mg tablets should be dispersed in 10 ml water.
  • Protect your skin from sun.

Remarks

  • For patients on drug-susceptible TB treatment, pyrazinamide is given as part of a fixed-dose combination.
  • For the 6HRZEto regimen for drug-susceptible TB meningitis, the dose of pyrazinamide is 40 mg/kg once daily (max. 2000 mg daily).

Storage

 
– 
 
–  Below 25 °C