A new study has found nearly half of patients
with dementia are taking one or more herbal extracts or vitamin
supplements – the majority without their doctor’s knowledge.
There are indications that vitamins and herbal
extracts are being used by many dementia patients, although there
is limited evidence. In many cases, these substances are being used
as over-the-counter drugs without the knowledge of health
professionals, who themselves may not be aware of the benefits and
risks involved.
This postal questionnaire survey examined the
attitudes, knowledge and practices of dementia patients, doctors
and nurses in relation to the use of herbal extracts and
vitamins.
250 questionnaires were sent out to patients
and 140 patients responded. A significant number of patients (44%)
were taking one or more supplements, most of them without their
doctor’s knowledge.
Most patients were unaware of the side-effects
(79%) or interactions with other drugs (71%). The majority (81%)
did not receive professional advice about their use and
side-effects.
A further 350 questionnaires were sent to
health professionals and 200 of these responded. The majority (68%)
believed that fewer than 10% of their patients were taking these
supplements.
A significant number (43.5%) reported that
either they were not sure whether, or did not believe that, these
substances cause side-effects. Only 24.4% reported that they always
or often discussed with their patients potential side-effects, or
interactions with other drugs.
The researchers conclude that although many
patients are taking over-the-counter herbal extracts and vitamins,
only a minority are convinced about their usefulness.
It is of concern that many professionals are
unaware of the use of these substances by their patients, and that
only a minority report that they discuss them with their
patients.
There is a need for urgent action, they say,
to target education at health professionals and dementia patients
and carers alike.
For further information, please contact Liz Fox or Deborah
Hart in the Communications Department.
Telephone: 020 7235 2351 Extensions. 6298 or 6127
References:
Royal College of Psychiatrists’ Annual Meeting, Imperial College London 1 - 4 July 2008