Answer
Ribavirin is not recommended with Combivir (lamivudine + zidovudine) because combining it with zidovudine increases the risk of anaemia; worsening anaemia has been reported, although the exact mechanism is unclear.
Sources for this answer
- Combivir 150 mg/300 mg Film-coated TabletsViiV Healthcare UK Ltd · emc · SmPC §4.5 Interaction with other medicinal products · Version 42Document updated
Sources checked