What do systematic reviews say?

Dihydrocodeine vs buprenorphine

Dihydrocodeine showed no clear difference in treatment retention Early dropout compared with buprenorphine (low certainty).

• Dihydrocodeine for detoxification and maintenance treatment in individuals with opiate use disorders 2020 · Cochrane Headline outcomes only
  RR 1.29 [0.99, 1.68]
  2 studies · 150 participants
  Low