Drink Spiking: Tell-tale Signs and How to Avoid It

What is drink spiking?

Drink spiking happens when someone adds a substance to your drink without your knowledge or consent. The aim is usually to alter your mental state, making you confused, drowsy, or less able to resist what happens next.

GHB and Rohypnol tend to get the most attention in news coverage, but spiking can involve many different substances. These include prescription sedatives, illegal drugs, and even additional alcohol. Some substances are colourless and tasteless, making them difficult to detect.

People who spike drinks may have various motives. Some do it to commit theft, taking advantage of someone who becomes confused or unconscious. Others use spiking as a way to carry out sexual assault or other forms of violence. In some cases, people spike drinks as a so called prank, not fully understanding the serious harm this can cause.

Spiking someone's drink is a criminal offence. When linked to sexual intent, it falls under the Sexual Offences Act 2003 and can result in a prison sentence of up to ten years. Spiking without sexual intent may be prosecuted under the Offences Against the Person Act 1861, which covers administering poison or noxious substances.

Signs that a drink may have been spiked

The effects of drink spiking vary depending on what substance was used and how much. However, there are common warning signs to be aware of, both in yourself and in others.

  • Feeling drunk very quickly or more drunk than you would expect based on what you have consumed
  • Confusion, disorientation, or difficulty concentrating
  • Feeling dizzy, faint, or having trouble with balance
  • Nausea or vomiting
  • Blurred vision or difficulty seeing clearly
  • Memory gaps or blackouts
  • Feeling unusually tired or drowsy
  • Loss of inhibitions or behaving out of character
  • Difficulty speaking or slurred speech
  • Feeling paralysed or unable to move properly

These symptoms often appear in combinations or waves rather than one at a time, which can help distinguish spiking from simply having too much to drink. They can come on suddenly, often within fifteen to thirty minutes of the drink being consumed. If you or someone you are with starts experiencing these signs unexpectedly, treat it seriously.

Some of these symptoms overlap with the effects of drinking too much alcohol. However, if the symptoms seem out of proportion to what has been consumed, spiking should be considered as a possibility.

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Reducing your risk

The responsibility for spiking lies entirely with the person who does it. That said, there are precautions that may help reduce your risk, though none can guarantee safety.

Keep your drink with you at all times. If you need to leave it unattended, even briefly, consider getting a fresh one when you return. This applies whether you are in a pub, club, house party, or any other social setting.

Accept drinks only from people you know and trust. If someone you do not know well offers to buy you a drink, go with them to the bar and watch it being poured and served. Be cautious of drinks that have already been opened or mixed before being handed to you.

Consider establishing a buddy system before going out. Agree with friends to check in on each other throughout the evening and have a plan for getting home safely together. If someone in your group starts acting unusually or seems suddenly unwell, stay with them and get help.

Some people choose to use drink covers or testing kits, which are now available in many venues and online. Organisations like Drinkaware provide guidance on current drink safety tools and approaches. These products can offer some additional reassurance, though they are not foolproof and work best alongside general awareness.

If something feels off about a situation or a drink, it is fine to leave or pour the drink away. You do not owe anyone an explanation.

What to do if you think you have been spiked

If you suspect your drink has been spiked, tell someone you trust immediately. This could be a friend, a member of bar staff, or a door supervisor. Some venues participate in the Ask for Angela scheme, where you can discreetly ask staff for help, though availability varies by location so it is worth checking locally.

Move to a safe place and do not leave with someone you do not know. Call a trusted friend or family member to come and collect you if possible.

If you feel seriously unwell, call 999 or get to a hospital as soon as you can. Medical staff can run tests to identify what substance may have been used, though some drugs leave the body quickly, so time matters.

You can report drink spiking to the police, even if you are unsure exactly what happened. They can advise on next steps and may be able to investigate. If you believe a sexual assault has taken place, specialist support is available from organisations such as Rape Crisis England and Wales or the Survivors Trust.

For general advice on staying safe and reporting crime, visit the GOV.UK website or contact your local police force directly.