The effects start after about 10 minutes and can last for up to seven hours or more. These drugs are also sedatives and are sometimes used to treat insomnia and anxiety. Occasionally, people become dependent on them; withdrawal symptoms can be severe and may include vomiting, fits and tremors.

How long does a spiked drink last?

your body size and age. Symptoms can develop within 5 - 20 minutes and last for up to 12 hours. The drugs used often make you feel sleepy, weak and reduce your ability to defend yourself. You may not be aware of what is going on around you or what is happening to you.

How do I know if Ive been spiked?

If your drink has been spiked you may not be able to see, smell or taste it. The drug or extra alcohol may be colourless and odourless and may not affect the taste of your drink. Warning signs include: feeling dizzy or faint.