At a Glance
Dosage
insufflated
| Level | Fentanyl | Heroin |
|---|---|---|
| Threshold | — μg | 5 mg |
| Light | — μg | 7.5–20 mg |
| Common | — μg | 20–35 mg |
| Strong | — μg | 35–50 mg |
| Heavy | — μg | 50 mg |
Only in Fentanyl
sublingual
| Level | Dose |
|---|
transdermal
| Level |
|---|
Duration
insufflated
Fentanyl
insufflated
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
Heroin
Effects
Shared Effects22
Safety
Interaction: Fentanyl + Heroin
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 Heroin?
Fentanyl is classified as a Opioids (Anilidopiperidine, Substituted piperidines) while Heroin is classified as a Opioids (Substituted morphinans). They share 22 effects in common, with 7 effects unique to Fentanyl and 3 unique to Heroin.
Is it safe to combine Fentanyl and Heroin?
There is no direct interaction data available for combining Fentanyl and Heroin. This does not mean the combination is safe. Always exercise caution and research thoroughly.
Which is stronger, Fentanyl or Heroin?
Both substances have different dose profiles and pharmacological mechanisms. Comparing "strength" directly is misleading — each has unique effects, durations, and safety considerations.