At a Glance
Dosage
insufflated
| Level | Fentanyl | Heroin |
|---|---|---|
| Threshold | 5 μg | 5 mg |
| Light | 10–25 μg | 7.5–20 mg |
| Common | 25–50 μg | 20–35 mg |
| Strong | 50–75 μg | 35–50 mg |
| Heavy | — μg | 50 mg |
Only in Fentanyl
sublingual
| Level | Dose |
|---|---|
| Threshold | 5 μg |
Duration
insufflated
Fentanyl
insufflated
Onset
Onset: 15 min – 30 min
Total: 1 hrs – 4 hrs
Heroin
insufflated
Peak
Offset
Afterglow
Onset: 10 sec – 1 minCome Up: 10 sec – 1 minPeak: 1 min – 1.5 hrsOffset: 1 hrs – 3 hrsAfterglow: 1.5 hrs – 3 hrs
Effects
Shared Effects20
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 20 effects in common, with 6 effects unique to Fentanyl and 2 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?
At common doses via insufflated, Fentanyl is typically dosed at 25–50 μg while Heroin is dosed at 20–35 mg. However, "stronger" depends on context — potency, subjective intensity, and duration all factor in. These substances have different pharmacological profiles and comparing raw potency is not straightforward.