2C-B

Taken orally, 2C-B comes on over 20–60 minutes, peaks at around 1–2 hours, and lasts roughly 4–8 hours — shorter than mescaline or LSD. Peak drug concentrations are reached about an hour after an oral dose (Papaseit et al., 2018).

2C-B raises heart rate and blood pressure and can produce intense psychedelic effects at higher doses, so it is generally inadvisable for:

• Cardiovascular conditions: heart disease, uncontrolled high blood pressure, or a history of stroke.
• Psychiatric history: a personal or family history of psychosis, schizophrenia, or bipolar disorder.
• Use of serotonergic medications or MAOIs (see interactions below).
• Pregnancy and breastfeeding.

As a serotonergic phenethylamine, 2C-B can interact with several other drugs and medications.

• MAOIs: can dangerously intensify and prolong effects and raise the risk of serotonin toxicity.
• SSRIs, SNRIs, and other serotonergic drugs: raise the risk of serotonin syndrome.
• Stimulants: add cardiovascular strain (a particular concern because 'tusi' mixtures often already contain stimulants).

This list is not exhaustive. Disclose all medications to a clinician before considering use.

Because 2C-B is so dose-sensitive, it is easy to take more than intended and tip from a gentle, sociable state into an overwhelming, anxious, or confusing high-dose experience. Difficult episodes can involve fear, panic, or disorientation, and are more likely in chaotic settings such as crowded parties. A calm environment, an accurate dose, and a sober companion substantially reduce the risk.

The most important practical risks with 2C-B relate to dose and product identity:

• Adulteration and mis-selling: pink powders sold as 'tusi', 'tucibí', or 'pink cocaine' frequently contain little or no real 2C-B and are instead mixtures of drugs such as ketamine, MDMA, caffeine, or stimulants, so people may unknowingly take entirely different substances.
• Dosing error: because it is active at small milligram amounts, taking too much is easy and can cause severe agitation, very high blood pressure and heart rate, and overheating.
• Cardiovascular strain and, at high doses, reports of vasoconstriction and serious adverse events.
• Prolonged perceptual changes (HPPD) are uncommon but have been reported with psychedelics in general.

Some groups face higher risk and should avoid 2C-B:

• People with a personal or family history of psychosis, schizophrenia, or bipolar disorder.
• People with heart disease or uncontrolled high blood pressure.
• People taking MAOIs, antidepressants, or other serotonergic medications.
• Adolescents, whose brains are still developing.
• Pregnant or breastfeeding people.

2C-B is not considered physically addictive and does not produce a recognised dependence syndrome or compulsive drug-seeking. As with any drug used in nightlife settings, however, some people may fall into patterns of frequent use that are worth reflecting on.

There is no well-established lethal dose for 2C-B, but serious adverse events and rare deaths have been reported, usually involving very high doses, adulterated 'tusi' mixtures, or combinations with other drugs. Signs of having taken too much include severe agitation, a racing heart, dangerously high blood pressure, overheating, intense vasoconstriction, and overwhelming panic. If someone becomes severely agitated, overheated, has chest pain, or loses consciousness, seek emergency medical help immediately.