Strength200 mg
Formoral.solid
Adult dose and durationWeight-based, with a direct-acting antiviral: under 75 kg, 1 g/day in 2 divided doses; 75 kg or more, 1.2 g/day in 2 divided doses. A low starting dose of 600 mg/day increased as tolerated is used where anaemia is a concern - Set by the hepatologist - depends on genotype, treatment history and cirrhosis status
Paediatric dose15 mg/kg/day [child max 1200 mg]
(Children 3 years and over: under 47 kg, 15 mg/kg/day in 2 divided doses; 47-59 kg, 400 mg twice daily; 60-73 kg, 400 mg morning and 600 mg evening; over 73 kg, 600 mg twice daily. Paediatric hepatitis C is managed in a specialist centre.)
Dose by age| 3 years and over: | Under 47 kg, 15 mg/kg/day in 2 divided doses; 47 to 59 kg, 400 mg twice daily; 60 to 73 kg, 400 mg morning and 600 mg evening; over 73 kg, 600 mg twice daily. Specialist centre only. |
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Dose by weight| 3kg | 45 mg/day |
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| 4kg | 60 mg/day |
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| 5kg | 75 mg/day |
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| 6kg | 90 mg/day |
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| 7kg | 105 mg/day |
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| 8kg | 120 mg/day |
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| 9kg | 135 mg/day |
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| 10kg | 150 mg/day |
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| 11kg | 165 mg/day |
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| 12kg | 180 mg/day |
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| 13kg | 195 mg/day |
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| 14kg | 210 mg/day |
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| 15kg | 225 mg/day |
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| 16kg | 240 mg/day |
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| 17kg | 255 mg/day |
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| 18kg | 270 mg/day |
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| 19kg | 285 mg/day |
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| 20kg | 300 mg/day |
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| 21kg | 315 mg/day |
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| 22kg | 330 mg/day |
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| 23kg | 345 mg/day |
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| 24kg | 360 mg/day |
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| 25kg | 375 mg/day |
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| 26kg | 390 mg/day |
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| 27kg | 405 mg/day |
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| 28kg | 420 mg/day |
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| 29kg | 435 mg/day |
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| 30kg | 450 mg/day |
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| 31kg | 465 mg/day |
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| 32kg | 480 mg/day |
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| 33kg | 495 mg/day |
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| 34kg | 510 mg/day |
|---|
| 35kg | 525 mg/day |
|---|
| 36kg | 540 mg/day |
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| 37kg | 555 mg/day |
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| 38kg | 570 mg/day |
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| 39kg | 585 mg/day |
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| 40kg | 600 mg/day |
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| 41kg | 615 mg/day |
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| 42kg | 630 mg/day |
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| 43kg | 645 mg/day |
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| 44kg | 660 mg/day |
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| 45kg | 675 mg/day |
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| 46kg | 690 mg/day |
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| 47kg | 705 mg/day |
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| 48kg | 720 mg/day |
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| 49kg | 735 mg/day |
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| 50kg | 750 mg/day |
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Dose sourceEgyptian National Drug Formulary - Antimicrobial 2023 (ribavirin monograph)
Why24 live products, a legacy of Egypt's hepatitis C programme. It still has a place in specific direct-acting antiviral regimens, so a search must not come back empty - but it is never given alone and never started in primary care.
Cautions- Add-on only - ribavirin is never given as monotherapy and is combined with a direct-acting antiviral chosen by the treating hepatologist.
- Largely superseded: modern sofosbuvir-based regimens cure most Egyptian genotype 4 patients without ribavirin, so its appearance on a prescription should prompt a check that it is still needed.
- Haemolytic anaemia is the dose-limiting toxicity - check haemoglobin at baseline, week 2 and week 4; reduce the dose at 8.5-10 g/dL and stop permanently below 8.5 g/dL.
- Teratogen. Contraindicated in pregnancy AND in a male patient whose partner is pregnant. Effective contraception is needed during treatment and for months afterwards.
- CONTRAINDICATED in thalassaemia major and sickle cell disease - both are common in Egypt.
- Contraindicated if creatinine clearance is below 50 mL/min, and (tablets) in decompensated cirrhosis Child-Pugh B or C.
- Permanently discontinue if white cells fall below 1,000/mm3, neutrophils below 500/mm3, or platelets below 25 x 10^9/L.