Opioid Equianalgesic Dose Calculator
Guides safe opioid rotation and dose conversion in palliative care using standard equianalgesic ratios. Does not replace clinical judgement.
Score interpretation
→ Use standard conversion: calculate total daily dose, apply equianalgesic ratio, reduce by 25-30% for incomplete cross-tolerance; provide PRN breakthrough (1/6th daily dose)
→ Palliative care pharmacist review; consider renal/hepatic function impact; breakthrough dosing protocol; patient and carer education on side effects
→ Specialist palliative care; CSCI syringe driver; reassess frequently; consider opioid sparing adjuvants (ketamine, methadone — specialist only); avoid high-dose fentanyl patches without specialist guidance
Interpretation bands for the Opioid Conversion. Apply clinical judgement and local guidance.
References
Related
Curated clinical cross-links plus same-class fallbacks.
- Morphine Slow-Release (Elderly Chronic Pain) · Opioid Analgesic — Modified-Release Oral
- Morphine (Orthopaedic Acute Pain) · Opioid Analgesic — Strong
- Morphine (Paediatric) · Opioid Analgesic — Moderate to Severe Pain in Children
- Morphine PCA (Burns Pain) · Opioid Analgesic (Patient-Controlled Analgesia)
- Morphine (PCA — Post-Operative Pain) · Opioid Analgesic — Patient-Controlled Analgesia
- Morphine · Opioid Analgesic — Severe Ureteric Colic / Post-Operative Pain
Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.