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
Peak
Offset
Onset: 0 sec – 30 secCome Up: 2 min – 5 minPeak: 1.5 hrs – 2.5 hrsOffset: 1 hrs – 1.5 hrs
Total: 4 hrs – 5 hrs
oral
Peak
Offset
10 min – 30 min
Effects
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 21 effects in common, with 7 effects unique to Morphine and 5 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.