At a Glance
Dosage
Only in Morphine
intravenous
| Level | Dose |
|---|---|
| Threshold | 3.33 mg |
| Light | 3.33–5 mg |
| Common | 5–7.5 mg |
| Strong | 7.5–10 mg |
| Heavy | 10 mg |
oral
| Level | Dose |
|---|---|
| Threshold | 10 mg |
| Light | 10–15 mg |
| Common | 15–20 mg |
| Strong | 20–30 mg |
Duration
Only in Morphine
intravenous
Total: 4 hrs – 5 hrsPeak
Offset
Onset0 sec – 30 sec
Come Up2 min – 5 min
Peak1.5 hrs – 2.5 hrs
Offset1 hrs – 1.5 hrs
oral
Total: 4 hrs – 6 hrsEffects
Safety
Interaction: Morphine + Fentanyl
No direct interaction data available between these substances. This does not mean the combination is safe.
Morphine — Dangerous Interactions
Frequently Asked Questions
What is the difference between Morphine and Fentanyl?
Morphine is classified as a Opioids (Substituted morphinans) while Fentanyl is classified as a Opioids (Anilidopiperidine, Substituted piperidines). They share 23 effects in common, with 11 effects unique to Morphine and 6 unique to Fentanyl.
Is it safe to combine Morphine and Fentanyl?
There is no direct interaction data available for combining Morphine and Fentanyl. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, Morphine or Fentanyl?
Morphine and Fentanyl are typically administered via different routes, making a direct potency comparison difficult. They belong to different pharmacological profiles and should not be compared by dose alone.