What is ketamine infusion therapy?

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What is ketamine infusion therapy?

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Friends star Matthew Perry had been undergoing ketamine infusion therapy, used to treat depression

Among the details that emerged on Thursday about the ****** of actor Matthew Perry was that the Friends star had been undergoing ketamine infusion therapy.

The coroner concluded that the treatment – which is offered both in the US and the *** –

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for Perry’s ****** due to ketamine, which prosecutors allege was supplied to him illicitly.

Five people including two doctors, Perry’s assistant and an alleged ***** dealer

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for providing the ***** outside of his treatment regimen.

Perry, 54, had been open about his history of substance misuse, and prosecutors say the accused profited from his addictive tendencies.

What is ketamine?

Ketamine is an anaesthetic that can be used to treat depression, anxiety and pain in a medical setting.

However, it also has dissociative effects – meaning it can distort perceptions of sight, sound and time, as well as producing calming and relaxing effects. This means it is also used illicitly.

According to addiction advice service Talk to Frank, Ketamine can increase a person’s heart rate and blood pressure, and can leave users confused and agitated – which may cause them to hurt themselves without realising.

Chronic ketamine use has been linked to liver damage, as well as

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such as incontinence.

What is ketamine infusion therapy?

Ketamine is used to treat depression in cases where traditional anti-depressants have not been effective.

Dr Rajalingam Yadhu, a consultant at the Royal Free Hospital in London who also runs Save Minds, a ketamine infusion therapy clinic, told the BBC that the patients he treats have long-term depression and have usually tried a minimum of seven different medications without seeing an improvement.

“These are people who have actually tried everything in life, [are] extremely suicidal – and given the chance, would ***** themselves.”

The treatment has also been used by high-profile individuals. As well as Perry, billionaire entrepreneur Elon Musk has said he has been given ketamine to treat depression.

In an interview with CNN in March, the X and Tesla owner said the ***** was “helpful for getting one out of the negative frame of mind”.

How does ketamine infusion therapy work?

Ketamine infusion therapy works by giving the ***** intravenously in smaller doses than those used for anaesthesia.

“For depression, you use a lower dose than you use for chronic pain, a really lower dose than patients receive as anaesthetics,” says Dr Mario Juruena, a psychiatrist at King’s College London who specialises in treatment-resistant mental disorders.

Ketamine acts faster than traditional anti-depressants – but its effects also wear off quicker.

“It has a short half-life, so the time that the patients have the effect is quite short at some points,” Dr Juruena told the BBC, stressing the importance of monitoring patients’ mental state for relapse back into depression.

Dr Yadhu says that, unlike other mainstream anti-depressants, ketamine has been found to affect nerves that use the chemical glutamate to interact. Glutamate is the most abundant neurotransmitter in the nervous system.

Experts are researching why it might help some patients but not others.

Dr Juruena told the BBC that more than 60% of patients responded well to ketamine treatment – but said this was usually while taking other anti-depressants or alongside psychotherapy.

Both cautioned that people could still experience negative side-effects from taking ketamine, even when overseen by a medical professional – though Dr Juruena said this happened less often because of the lower dosage.

Dr Yadhu says that while many of his patients’ experiences were positive, some were unpleasant and could bring back bad memories.

He also says he does not treat people showing addictive tendencies with ketamine – though some doctors are exploring it as a treatment for ***** and alcohol addiction.

Receiving ketamine in an “infusion” – ie through an IV drip – is not the only way of treating people with ketamine, however.

Dr Juruena says it can also be given through an injection, a nasal spray or as a capsule.

Why was ketamine infusion therapy ruled out of Perry’s ******?

Experts say the dosage of ketamine given in infusion treatment has to be of a precise and small amount to have anti-depressant effects.

But a post-mortem examination found Perry’s blood contained a high concentration of ketamine and that he had ***** of the “acute effects” of the *****.

The medical examiner also found his last ketamine infusion therapy session had taken place more than a week before his ****** – by which time the ***** would have worn off.

They said the levels of ketamine in Perry’s body when he ***** were also of a far higher dosage.

Prosecutors alleged that Perry’s assistant had given him at least 27 shots of ketamine in the four days before his ******.

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