At a Glance
Dosage
Only in Fentanyl
sublingual
| Level | Dose |
|---|
insufflated
| Level | Dose |
|---|
transdermal
| Level | Dose |
|---|
Only in Methadone
oral
| Level | Dose |
|---|---|
| Threshold | 1 mg |
| Light | 3–5 mg |
| Common | 5–15 mg |
| Strong | 15–30 mg |
| Heavy | 30 |
Duration
Only in Fentanyl
sublingual
Total: 1 hrs – 4 hrsOnset
Peak
Afterglow
Onset15 min – 30 min
Come Up3 min – 24 min
Peak18 min – 1.6 hrs
Afterglow15 min – 1.2 hrs
insufflated
Total: 1 hrs – 4 hrsEffects
Shared Effects23
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 23 effects in common, with 6 effects unique to Fentanyl and 9 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.