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 Codeine
oral
Come Up
Peak
Effects
Shared Effects21
Safety
Interaction: Fentanyl + Codeine
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 Codeine?
Fentanyl is classified as a Opioids (Anilidopiperidine, Substituted piperidines) while Codeine is classified as a Opioids (Substituted morphinans). They share 21 effects in common, with 5 effects unique to Fentanyl and 6 unique to Codeine.
Is it safe to combine Fentanyl and Codeine?
There is no direct interaction data available for combining Fentanyl and Codeine. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, Fentanyl or Codeine?
Fentanyl and Codeine 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.