Last published: February 26, 2020
What is LSD?
LSD (Lysergic acid diethylamide) is a synthetic chemical, made from a substance found in ergot, which is a fungus that infects rye (grain).1
LSD belongs to a group of drugs known a psychedelics. When small doses are taken, it can produce mild changes in perception, mood and thought. When larger doses are taken, it may produce visual hallucinations and distortions of space and time.2
Sometimes, what is sold as LSD can actually be other chemicals such as NBOMe or the 2C family of drugs (part of the new psychoactive substances). These can be quite dangerous, as their quality is inconsistent, plus the potential to take too much of these other substances can be fatal and a number of deaths have been reported due to people taking them.3
What it looks like
In its pure state, LSD is a white odourless crystalline substance. However, LSD is so potent that an effective dose of pure drug is so small it is virtually invisible. As a result it is usually diluted with other materials. The most common form of LSD, is drops of LSD solution dried onto gelatin sheets, pieces of blotting paper or sugar cubes, which release the drug when they are swallowed.2 LSD is also sometimes sold as a liquid, in a tablet or in capsules.
Acid, trips, tabs, microdots, dots, Lucy.
How is it used?
LSD is usually swallowed, or dissolved under the tongue, but it can also be sniffed, injected or smoked.1,4
Effects of LSD
There is no safe level of drug use. Use of any drug always carries some risk. It’s important to be careful when taking any type of drug.
LSD can affect everyone differently, based on:
- size, weight and health
- whether the person is used to taking it
- whether other drugs are taken around the same time
- the amount taken
- the strength of the drug (varies from batch to batch).
The effects of LSD usually begin in 30 – 45 minutes and can last for 4 to 12 hours.3 The following may be experienced during this time:
- euphoria and wellbeing
- dilation of pupils
- perceptual changes, such as visual and auditory hallucinations.
- confusion and trouble concentrating
- fast or irregular heart beat
- increased body temperature
- breathing quickly
- facial flushes, sweating and chills.1,2
If you take a large amount, the negative effects of LSD are more likely to happen. Call an ambulance straight away by dialling triple zero (000) if you have any of these symptoms (ambulance officers don’t need to involve the police):
- increased risk taking
Sometimes you can experience a ‘bad trip’ , involving a disturbing hallucination. This can lead to panic and risky behaviour, like running across a road or attempting self-harm.1,2
In the days after using hallucinogens, the following may be experienced:
- body and muscle aches
- feeling depressed.1
Long term effects
Some people who regularly use LSD may eventually experience flashbacks. A flashback is when an LSD experience reoccurs, they are usually visual distortions that involve perceptual or emotional changes. Flashbacks can happen weeks, months or even years after the drug was last taken. This can be disturbing, especially if a frightening experience or hallucination is recalled.1,2
Flashbacks can be brought on by using other drugs, stress, tiredness or exercise and usually last for a minute or two.2
Using LSD with other drugs
The effects of taking LSD with other drugs − including over-the-counter or prescribed medications − can be unpredictable and dangerous, and could cause:
- LSD + ice, speed or ecstasy: can increase the chances of a bad trip and can also lead to panic 5
- LSD + alcohol: increased nausea and vomiting.6
Tolerance and dependence
Tolerance develops rapidly to the effects of LSD. After the third or fourth consecutive days of taking LSD, no amount of the drug can produce the desired effects. However, after a short period of abstinence (about 3-4 days) normal tolerance returns.2
There are no known physical withdrawal symptoms of LSD. Taking LSD regularly does not result in physical dependence, and although there have been reports of psychological dependence occurring, the evidence is limited.1,2
If your use of LSD is affecting your health, family, relationships, work, school, financial or other life situations, you can find help and support.
Call 1300 85 85 84 to speak to a real person and get answers to your questions as well as advice on practical ‘next steps’.
You can also search our list of Support Services for services in your local area:
Help and Support
Filter by service type and location
Federal and state laws provide penalties for possessing, using, making or selling LSD, or driving under the influence.
See also, drugs and the law.
- 9.4% of Australians aged 14 years and over have used hallucinogens one or more times in their life.7
- 1.3% of Australians aged 14 years and over have used hallucinogens in the previous 12 months.7
- Young Australians (aged 14–24) first try hallucinogens at 181/2 years on average.7
- 2.8% of 12-17 years old have tried hallucinogens such as LSD.8
- Campbell, A. (2001). The Australian illicit drug guide. Melbourne: Black Inc.
- Brands, B. Sproule, B. & Marshman, J. (Eds.). (1998). Drugs & drug abuse (3rd ed.). Ontario: Addiction Research Foundation.
- Independent Scientific Committee on Drugs. (2012). LSD / Acid.
- Erowid. (2001). Ask Erowid.
- Community Alcohol and Drug Services (CADS). (2008). Drugs, LSD (acid, trips, tabs, A).
- University of California. (2013). Alcohol and LSD / Acid.
- Australian Institute of Health and Welfare. (2017). National Drug Strategy Household Survey detailed report 2016. Canberra: AIHW.
- White, V., & Williams, T. (2016). Australian secondary school students’ use of tobacco, alcohol, and over-the-counter and illicit substances in 2014. Melbourne: The Cancer Council, Victoria.