An outbreak of terrifying drug overdoses on the Gold Coast were the result of a bad batch of a drug called 'N-bomb' and MDMA, and not zombie drug 'flakka' as initially feared.

The horror weekend in Queensland's party city saw 21 people treated and 16 people hospitalised following violent and incredibly volatile reactions to a mystery drug.

It was widely reported people had likely overdosed on flakka, a hallucinogen which sends users into a paranoid frenzy where they act like zombies.

But police toxicology reports have since returned and confirmed the people tested had no flakka in their system, and instead had traces of MDMA and LSD, according to the Gold Coast Bulletin.

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An outbreak of terrifying drug overdoses on the Gold Coast (pictured, footage released by Queensland Police) were the result of a cocktail of LSD and MDMA

It was widely reported that the people had likely overdosed on flakka, a hallucinogen which sends users into a paranoid frenzy where they act like zombies (pictured, user in the US)

WHAT IS N-BOMB? 'N Bomb' is the street name given to a powerful hallucinogen similar to LSD (acid) It distorts the user's senses and can be unpredictable, resulting in a 'bad trip' The people who overdosed on the Gold Coast were found with both LSD (acid) and MDMA (ecstasy) in their system - a potentially lethal cocktail of drugs It's believed they had a bad batch of Advertisement

N-bomb is a powerful hallucinogen similar to LSD.

It's unclear if the LSD (known as acid) and MDMA (known as ecstasy) were taken as a lethal cocktail together, or apart - a combination known as candy flipping where the MDMA is taken hours later in a bid to soften the come-down from the acid.

Police have charged two men in connection to the drug mayhem across the Gold Coast over the weekend.

On Sunday, Gold Coast Criminal Investigation Branch (CIB) detectives arrested a 24-year-old Bundall man and charged him with supplying a dangerous drug.

On Wednesday, detectives arrested a 21-year-old man at a Surfers Paradise address and arrested him for supply and possession of a dangerous drug.

Police toxicology reports have since returned and confirmed that the people tested had no flakka in their system, but had traces of both LSD (acid) and MDMA (ecstasy)

Queensland Police released a video showcasing a collection of the confronting drug overdoses witnessed across the weekend

WHAT IS FLAKKA? NEW DRUG PLAGUING THE GOLD COAST Flakka, also known as gravel, first emerged in the United States in 2013. It costs as little as AUD$7.50 and can be accessed easily online, with some services offering next-day delivery. Most users do not know what they are purchasing, and are commonly told the substance is MDMA, the abbreviated chemical name for ecstasy. Flakka's active ingredient is a synthetic stimulant called alpha-PVP, which is chemically similar to MDMA. However, it has vastly different effects, causing users to hallucinate, become psychotic, rip their clothes off and run into the street. Flakka is most commonly snorted but can also be smoked or injected. Advertisement

It comes as Queensland Police released a video showcasing a collection of the confronting drug overdoses witnessed across the weekend.

In disturbing video caught on bodycam by officers, an 18-year-old girl can be seen collapsed in the street while screaming and writhing around in pain.

Officers say they were forced to sedate the girl in order to take her to hospital after they were called out at around 9pm on Saturday, October 15.

Elsewhere a 42-year-old man wearing nothing more than a pair of boxers and a single sock was filmed begging for help after collapsing on the back seat of a car.

Police and medics had to wrestle the man into an ambulance on Monday at around 11.30pm after being called by an Uber driver when the man started lashing out.

Medics and police attempted to comfort the man pictured as he screamed 'help me, please help me'

This woman (pictured) under the influence or flakka or alpha-PVP writhes on the ground and her eyes roll back in her head was shown on television in South America

Video of flakka users in the US show people writhing on the ground and screaching, hiding from non-existent gunman and running naked through city street

AFL player Riki Stephens, 27, from Victoria, is also in a coma at a Gold Coast hospital after a suspected overdose of the drug.

He was one of 16 people who were hospitalised in just one weekend on the Gold Coast as police warn the problem could be about to get worse.

Brian Codd, assistant commissioner for the South East, said: 'As we lead into the Gold Coast 600 and the schoolies, our focus will be on the safety and security of our community.

'The reality is this: There is no safe way to take these illicit drugs. Reference to recreational drugs, party drugs, feeds into a narrative that sometimes give attraction to what these poisons, toxins and compounds are, and what they do to people.'