agent that causes hallucinations, perception anomalies, and other substantial subjective changes in thoughts, emotion, and consciousness
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Hallucinogens are a type of drug that changes a person’s perception of reality. Also known as ‘psychedelic drugs’, hallucinogens make a person see, feel and hear things that aren’t real, or distort their interpretation of what’s going on around them. Some are quick-acting, others take longer to take effect. Being under the influence of a hallucinogen is commonly called ‘tripping’.Some hallucinogens are manufactured, like LSD (lysergic acid diethylamide), PCP (phencyclidine, or ‘angel dust’), and ketamine. Others are naturally occurring compounds found in particular plants. For instance, the peyote cactus produces the hallucinogen mescaline, while psilocybin is found in certain mushrooms, known as ‘magic mushrooms’.

Types of Hallucinogens: Hallucinogens come in a number of different forms. For example:

LSD is a powerful drug – typically, small squares of blotting paper or gelatine are soaked in LSD, which are then swallowed, although it may also come in tablets or capsules.

PCP usually comes in the form of tablets, capsules, or powders of various colours. It is usually swallowed, sniffed or injected, but is sometimes smoked.

Ketamine is used by medical practitioners and veterinarians as an aesthetic. It is often used illegally as a hallucinogenic drug. It can be made into tablets or pills or dissolved in liquid. It is usually swallowed, snorted, or injected.

Magic mushrooms can be cooked, boiled into a drink, or eaten raw.

Mescaline from the peyote cactus can be found as a white powder, while dried, ground peyote buttons can be found as capsules. It is usually swallowed but can be chewed or smoked.

Ayahuasca is a plant-based hallucinogenic tea. Traditionally used in parts of South America, Ayahuasca has become popular amongst western travelers.

Some depressant and stimulant drugs also have a hallucinogenic effect in high doses, including cannabis and ecstasy. Since a person’s sense of distance, time, and objective reality are warped when under the influence of hallucinogens, serious injury and accidental death are real risks.

Synthetic hallucinogens: In recent years, a wide range of synthetic products, claiming to have similar effects to hallucinogens, have also been available in Australia. The active ingredient in these products can potentially be a number of chemicals. These synthetic hallucinogens include NBOMes and PMA and are often sold as other drugs, yet contain very different ingredients, leading to potentially harmful and unexpected effects.

How hallucinogens work: Hallucinogens target specific centres of the brain to alter its understanding of sensory input. For instance, a person may be looking at a blank wall, but their hallucinating brain may interpret the blank wall as moving and swirling, or perhaps covered in insects.

Effects of hallucinogens; The effects of hallucinogens depend on the type of drug, the strength of the dose, the functioning of the person taking them and their state of mind.

Generally, some of the common effects of hallucinogens include:

hallucinations of sight, sound, taste and touch a blurring of the senses, such as sounds being ‘felt’ or colours being ‘heard’ feeling detached from the body distortions of time, direction and distance relaxation accelerated heart rate dilated pupils nausea and loss of appetite.

Hallucinogens and ‘bad trips’: Hallucinogens are unpredictable drugs. Just because someone has an enjoyable ‘trip’ the first time, doesn’t guarantee they will always have pleasant experiences.

Every person runs the risk of having a ‘bad trip’. Symptoms can include nightmarish hallucinations, extreme panic, paranoia and nausea. It is also possible to have a mixture of good and bad experiences in the one trip.

Other unpleasant side effects can include:

muscle spasms and loss of coordination convulsions and unconsciousness aggressive, hostile and violent behaviour catatonic syndrome, which means the user falls into a ‘zombie-like’ state. If an overdose is suspected, dial triple zero (000) for an ambulance immediately.

Dependence, tolerance and withdrawal: Like many other drugs, it is possible to build up a tolerance to hallucinogens. This means larger and larger doses need to be taken to achieve the same effect.

Some people develop a psychological dependence and feel that regular drug use is an important part of their lives. Research indicates that people can become physically dependent on hallucinogens like PCP or ketamine. If a person stops taking the drug, they may experience withdrawal symptoms. Damage from long-term use of hallucinogens

Some people may experience ‘flashbacks’, which can happen days, weeks, months or even years after taking the drug. They briefly relive the hallucinations of a previous trip so powerfully that it seems as if they have been transported back in time and space, or they may experience distortions of their present reality.

Having hallucinations when not under the influence of any hallucinogenic drugs can be very frightening. Treatment for drug dependence

Treatment options for drug dependence include detoxification, individual counselling and group therapy. See your doctor for information and referral, or contact an alcohol and another drug service in your area.

Where to get help: If an overdose is suspected, call triple zero (000) for an ambulance immediately

Your GP (doctor)

Alcohol and another drug service

DrugInfo Tel. 1300 85 85 84 – information and referral services for anyone seeking help for alcohol or drug use

DirectLine Tel. 1800 888 236 – for 24-hour confidential drug and alcohol telephone counselling, information and referral

Family Drug Help – for information and support for people concerned about a relative or friend using drugs Tel. 1300 660 068