At a Glance
| O-Desmethyltramadol | Fentanyl | |
|---|---|---|
| Class | Opioids | Opioids |
| Common Dose (sublingual) | 25–50 mg | 25–50 μg |
| Total Duration | 2.3–5.7 hrs | 0.3–0.5 hrs |
| Routes | intravenousoralsublingual |
O-Desmethyltramadol, a Opioids, and Fentanyl, a Opioids, are frequently compared by users looking to understand their relative effects, dosage profiles, and safety considerations. Both are classified as Opioidss, meaning they share a common pharmacological foundation. They share 22 documented effects in common, with 6 effects unique to O-Desmethyltramadol and 7 unique to Fentanyl. This side-by-side comparison covers dosage, duration, subjective effects, and safety to help you make informed decisions.
| O-Desmethyltramadol | Fentanyl | |
|---|---|---|
| Class | Opioids | Opioids |
| Common Dose (sublingual) | 25–50 mg | 25–50 μg |
| Total Duration | 2.3–5.7 hrs | 0.3–0.5 hrs |
| Routes | intravenousoralsublingual |
insufflatedsublingualtransdermal |
| Effects | 28 documented | 29 documented |
| Level | O-Desmethyltramadol | Fentanyl |
|---|---|---|
| Threshold | 5 mg | 5 μg |
| Light | 10–25 mg | 10–25 μg |
| Common | 25–50 mg | 25–50 μg |
| Strong | 50–80 mg | 50–75 μg |
| Heavy | 80 mg | 75 μg |
| Level | Dose |
|---|---|
| Threshold | 5 mg |
| Light | 5–12.5 mg |
| Common | 12.5–25 mg |
| Strong | 25–50 mg |
| Heavy | 50 mg |
| Level | Dose |
|---|---|
| Threshold | 5 mg |
| Light | 10–25 mg |
| Common | 25–50 mg |
| Strong | 50–100 mg |
| Heavy | 100 mg |
| Level | Dose |
|---|---|
| Threshold | 5 μg |
| Light | 10–25 μg |
| Common | 25–50 μg |
| Strong | 50–75 μg |
| Level | Dose |
|---|---|
| Threshold | 5 μg |
| Light | 12–25 μg |
| Common | 25–50 μg |
| Strong | 50–100 μg |
| Heavy | 100 μg |
O-Desmethyltramadol
Fentanyl
No direct interaction data available between these substances. This does not mean the combination is safe.