2C-B
2,5-dimethoxy-4-bromophenethylamine
Also known as Nexus · Bees · Venus · 2cb
Images
Quick reference
Duration
Experience
Primary effects
- Induces a mild psychedelic ambiance with enhanced color vibrancy and subtle visual morphing.
- Creates a physical awareness described as having a tactile or entactogenic edge.
- Shulgin noted its potential as an aphrodisiac, enhancing sexual human contact and sensation.
Peak character
- Headspace is stable and controllable; user remains fully functional, able to suppress the experience.
- Promotes a content and happy mood, with a sense of calmness and serenity.
- Mind tends to wander and drift, but is still under normal functional control.
Negatives / side effects
- Extreme dose sensitivity means slight changes in dosage can lead to significantly different effects.
- Can cause initial chilly feelings, shivers, and cold fingers (vasoconstriction); some users report body load issues at higher doses.
Aftereffects / comedown
- Drifts back to baseline without a significant comedown, leaving a comfortable and positive mood.
- No hangover and good sleep reported; leaves a post-trip afterglow.
Reference dosage
Reference ranges from third-party harm-reduction databases. Individual response varies enormously — start lower than you think.
| threshold | 2mg+ |
| light | 5mg+ |
| common | 15mg+ |
| strong | 25mg+ |
Reagent testing
| Marquis | Yellow → green (slow) |
| Mecke | Blue/green |
| Froehde | Orange → red/brown |
| Liebermann | Orange → brown |
Adulterant detection: Marquis going immediately dark/black suggests amphetamine contamination. Ehrlich turning purple would indicate indole adulterant.
2C-B has a distinctive slow Marquis reaction. Rushing to read results early gives false negatives. Use at least two reagents.
Source
Reference fields and narrative for 2C-B extracted from The Drug Users Bible by Dominic Milton Trott (MxZero Publishing, 2022).
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This platform provides educational and harm-reduction information adapted from public reference material. It does not endorse, encourage, or facilitate drug use. It is not medical advice. If you or someone near you may be in a medical emergency, contact local emergency services immediately.