At a Glance
Dosage
Only in Fentanyl
insufflated
| Level | Dose |
|---|---|
| Threshold | 5 μg |
| Light | 10–25 μg |
| Common | 25–50 μg |
| Strong | 50–75 μg |
sublingual
| Level | Dose |
|---|---|
| Threshold | 5 μg |
| Light | 10–25 μg |
| Common | 25–50 μg |
| Strong | 50–75 μg |
| Heavy | 75 μg |
Duration
Only in Fentanyl
insufflated
Onset
Onset: 15 min – 30 min
Total: 1 hrs – 4 hrs
sublingual
Onset
Onset: 15 min – 30 min
Total: 1 hrs – 4 hrs
transdermal
Onset
Onset: 2 hrs – 4 hrs
Total: 48 hrs – 72 hrs
Only in Methadone
oral
Peak
Effects
Shared Effects20
Safety
Interaction: Fentanyl + Methadone
No direct interaction data available between these substances. This does not mean the combination is safe.
Fentanyl — Dangerous Interactions
Frequently Asked Questions
What is the difference between Fentanyl and Methadone?
Fentanyl is classified as a Opioids (Anilidopiperidine, Substituted piperidines) while Methadone is classified as a Opioids (Diphenylpropylamine). They share 20 effects in common, with 6 effects unique to Fentanyl and 5 unique to Methadone.
Is it safe to combine Fentanyl and Methadone?
There is no direct interaction data available for combining Fentanyl and Methadone. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, Fentanyl or Methadone?
Fentanyl and Methadone 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.