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2CB Category: Psychedlics

Also called: bromo, nexus, CB, 2-CT-7: T-7, 7-up and tripstacy.

How it’s used

This is a hallucinogenic drug sold as a white powder or tiny 5mg pills. Effects can last for about four hours. It often comes as part of an ecstasy ‘party pack’. You swallow it, but you can also snort and smoke it.

Short-term effects

Long-term effects

If you are pregnant

Do not use if you are pregnant as we don’t know the risks to your baby.


We don’t know enough about how addictive these drugs are.


We don’t know enough about withdrawals from 2CB

What help is available?

« Back to Types of Drugs page
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The HSE and Union of Students in Ireland (USI) ask students to think about drug safety measures when using club drugs
Harm reduction messages from the #SaferStudentNights campaign.
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