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Cannabis Category: HallucinogensSedatives

Also called: hash, hashish, blow, pot, ganja, marijuana, grass, joint, THC, bhang, black, blast, blunts, Bob Hope, bush, dope, draw, hemp, herb, puff, northern lights, resin, sensi, shit, smoke, soap, spliff, wacky backy, weed, zero, afgan, moroccan.

Skunk is called: sinsemilla, homegrown, buds, tops, nederwiet or netherweed

How it’s used

You can smoke it with tobacco in a joint, inhale through a pipe or bong or make into a tea or food known as 'edibles'. Learn more about edible products here

Herbal cannabis (grass or weed) is common and is generally made from the dried leaves and flowering parts of the female plant and looks like tightly packed dried herbs.

Skunk is a general term given to stronger forms of cannabis that contain more THC, cannabis’s active ingredient, than resin or more traditional herbal cannabis.

Resin/hash is a black/brown lump made from the resin of the plant.

Short-term effects

Long-term effects

Other dangers

If you are pregnant

If you smoke cannabis with tobacco while you are pregnant the risk to your baby is the same as smoking – smaller birth weight, higher risk of premature (early) birth, higher risk of miscarriage, your baby may get less oxygen through the placenta. After the birth, your baby is at more risk of cot death and early health problems, such as asthma.


You can get psychologically addicted to cannabis, in this case, you might find it hard to cope without it. If you smoke it with tobacco you may get physically addicted to tobacco (see Tobacco ).


How long does it stay in your system?

Cannabis will show up in a urine test for 2-28 days (The length of time depends on the test used, the amount you take, if you have other medical conditions and your own metabolism. Please use this figure as a guide only.)

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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