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Heather Ashton

Chrystal Heather Ashton DM, FRCP was Emeritus Professor of Clinical Psychopharmacology at the University of Newcastle upon Tyne, England. She was a graduate of the University of Oxford and obtained a First Class Honours Degree (BA) in Physiology in 1951. She qualified in Medicine (BM, BCh, MA) in 1954 and gained a postgraduate Doctor of Medicine (DM) in 1956. She qualified as MRCP (Member of the Royal College of Physicians, London) in 1958 and was elected FRCP (Fellow of the Royal College of Physicians, London) in 1975. She also became National Health Service Consultant in Clinical Psychopharmacology in 1975 and National Health Service Consultant in Psychiatry in 1994.


She has worked at the University of Newcastle upon Tyne as a researcher (Lecturer, Senior Lecturer, Reader, and Professor) and clinician since 1965, first in the Department of Pharmacology and latterly in the Department of Psychiatry. Her research has centered, and continues, on the effects of psychotropic drugs (nicotine, cannabis, benzodiazepines, antidepressants and others) on the brain and behavior in man. Her main clinical work was in running a benzodiazepine withdrawal clinic for 12 years from 1982-1994.

Prior to her death, she was involved with the North East Council for Addictions (NECA) of which she was former Vice-Chairman of the Executive Committee. She was a patron of the Bristol & District Tranquilliser Project. She was a generic expert in the UK benzodiazepine litigation in the 1980s and has been involved with the UK organization Victims of Tranquillisers (VOT). She has submitted evidence about benzodiazepines to the House of Commons Health Select Committee.

Professor has published approximately 250 papers in professional journals, books, and chapters in books on psychotropic drugs of which over 50 concern benzodiazepines. She has given evidence to various Government committees on tobacco smoking, cannabis, and benzodiazepines and has given invited lectures on benzodiazepines in the UK, Australia, Sweden, Switzerland and other countries.


Professor C. Heather Ashton, D.M., F.R.C.P on Pioneering the Diazepam Substitution Taper and The Ashton Manual

For over a decade, Professor Ashton ran a research clinic for people who developed adverse effects from benzodiazepines and needed to withdraw. This was not a “detox” facility or addiction “rehab,” it was an outpatient research clinic that wasn’t originally designed for benzodiazepine withdrawal. When Ashton began recognizing consistent signs and symptoms of adverse benzodiazepine effects in patients who were on benzodiazpines, she used this facility to help patients get off of benzodiazepines as safely and comfortably as possible. Ashton described her experience as “unplanned” and “difficult,” because no other pharmacologists who worked in the clinic “wanted to take on those patients.”

In APRIL charity’s November 2008 discussion: third conference “Adverse Psychiatric side effects of medicines: What’s our responsibility?” Ashton describes how her career in benzodiazepine withdrawal began:

Well, just to put you in the picture, I ran a benzodiazepine withdrawal clinic for twelve years, which was quite unplanned; but, I was to run and work in a general pharmacology clinic and, one day a lady came in who’d been in a traffic accident. She was in plaster, and she had been put on Ativan by the surgeons– the orthopedic surgeons, for muscle relaxation. And she said, ‘You know, I can’t get off this drug. I’m starting to crave every time the next dose is due. I think I’m addicted. Can you help me?’ And well, I was young and naive in those days, and I said yes. But it was difficult. After her,  there was a stream, and then a flood; a torrent of patients coming in and saying ‘These benzos don’t work anymore, they were super at first, but now I’m getting more anxious, and all sorts of other things.’ And so that’s how this clinic started. We had to devote a whole clinic just to benzos. In fact, I ended up doing it two sessions a week for years. And no other pharmacologist in that group wanted to take on those patients because they didn’t like listening to people who said ‘Oh, I’m anxious, and this and that.’ And the doctors got defensive. So I got all of those patients. And I just listened, and they told me what to do, and they taught me about withdrawal; the ways to do it. We had many trials and errors. But that’s how it all started, so it’s patient power that moves things.

The following video (23:51) is from the APRIL Conference 2008 Breakout Session ‘A COMING OFF MEDICATION’—which included panel discussions about benzodiazepines, SSRIs and similar antidepressants. The ‘Coming Off’ session A took place in London on November 2008 at APRIL charity’s third conference ‘Adverse Psychiatric side effects of medicines: What’s our responsibility?’. The video contains a Q&A on Ashton’s clinic.



(Video Source: APRIL)

Ashton was assisted by the late Shirley Trickett, a registered nurse who later wrote the book, Coming Off Tranquilizers, Sleeping Pills and Anti-Depressants, inspired by her time working in the clinic.

Heather Ashton

Though physicians often struggle or fail to recognize the benzodiazepine withdrawal syndrome, patients are even more liable to fail to recognize that their drug may be their problem because increasing the dose may temporarily relieve tolerance symptoms, or more frequent dosing or switching to a benzodiazepine with a longer half-life (e.g., from Xanax to Klonopin) may relieve interdose withdrawal symptoms.

The importance of the Ashton Manual—a by-product of Ashton’s clinical experience with these patients for over a decade—is all because a qualified professional recognized the problem and addressed it appropriately.Clinical experience over a long period of time allowed Professor Ashton to use her skills in neuropsychopharmacology to identify the diazepam substitution taper as perhaps the most effective and most tolerated protocol for the withdrawal of benzodiazepines. However the benzodiazepine withdrawal syndrome can and often does occur with a slow taper, it is not as serious as abrupt discontinuation or a faster taper. The risk of seizures, psychosis and death is greatly decreased with slower tapers such as Ashton’s recommended tapering method with diazepam substitution.

The Ashton Manual‘s most recent update was in April of 2011 with a supplement addition pressing for further research.

Prof. Ashton encourages patients to adjust the withdrawal schedules to suit their individual needs—however, this important part of the manual often gets overlooked by patients and doctors alike. The purpose of tapering slowly is to allow for downregulated GABA and benzodiazepine neuroreceptors to upregulate and heal, and this process can take a long time; a lot longer than many people realize.

 Further Reading:

The Ashton Manual

Ashton’s Website




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