How Long Does Dihydrocodeine Take to Work?
It depends on the formulation.
Standard release (dihydrocodeine 30mg)
- Onset: 30–60 minutes after swallowing
- Peak effect: ~2 hours
- Duration: 4–6 hours
Take with food if you struggle with nausea. The food slows absorption slightly but doesn’t reduce the total dose.
Slow / modified release (60mg and 120mg)
- Onset: 1–2 hours
- Steady cover: ~12 hours
- Dosing: one tablet every 12 hours
Slow-release tablets are designed for chronic pain where you don’t want a peak-trough rollercoaster.
How to know it’s working
- Pain drops by 30–50% within the onset window
- You can move, breathe deeply, or sleep more comfortably
- Some mild drowsiness or warmth is normal
If it doesn’t work
If you’re at the max daily dose and the pain still isn’t controlled, it’s time to talk to a clinician about either adding paracetamol + ibuprofen (see paracetamol with dihydrocodeine), stepping up to slow-release 60mg, or switching to tramadol.
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