Answer
Combining dihydrocodeine tartrate with benzodiazepines increases the risk of sedation, respiratory depression, coma and death through additive central nervous system depression, so the dose and duration of combined use should be limited.
Sources for this answer
- Dihydrocodeine 90 mg prolonged release tabletsEnnogen IP Ltd · emc · SmPC §4.5 Interaction with other medicinal products · Version 4Document updated
Sources checked