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Substance education guide

2C-B

4-Bromo-2,5-dimethoxyphenethylamine · Designer Psychedelic

Representative photo of 2C-BWhat it looks like
Image: Retinafunk · CC BY-SA 2.5 · Wikimedia Commons. Appearance varies; illicit products may look different or be counterfeit.

01 · How it works

Origins & Dose Sensitivity

2C-B is a synthetic phenethylamine with psychedelic and entactogenic effects associated with serotonin receptors and adrenergic activity. Its steep dose-response curve makes small dosing differences consequential.

02 · Immediate effects

Recognize the effects

Signs of Use

  • Dilated pupils and mild tachycardia
  • Enhanced touch and emotional openness
  • Visual changes and synesthesia
  • Jaw tension, nausea, or sweating
  • Panic or paranoia at high doses

Short Term

  • Sensory enhancement and euphoria
  • Geometric visuals and emotional shifts
  • Blood pressure and temperature elevation
  • Gastrointestinal discomfort
  • Hyperreflexia or tremors

Long Term

  • Persistent visual disturbances
  • Repeated cardiovascular stress
  • Moderate tolerance without typical physical dependence
  • Unpredictable adulterant exposure

03 · Long-term consequences

Steep dose-response curve

High doses or adulterated products can produce severe agitation, hyperthermia, hypertension, seizures, and serotonin toxicity.

Medical emergency

Identifying an emergency

Chest pain, dangerous tachycardia, high temperature, rigid muscles, or seizures require 911.

Danger: Pink powders sold as Tuci are unpredictable mixtures
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