Valium
Where did it get
that REPUTATION?
We wanted to take
a closer look at the pill
that's always popping up
Top
Well, it was back in 1955
at the Hoffman-LaRoche Drug Company, a chemist called Dr Leo Sternbach
synthesized a drug he thought was in the chemical family quinazoline Noxides.
The drug was initially ignored because the company was interested in other
projects but a few years later, during a laboratory clean up would you
believe, the drug was rediscovered. As the lab proceeded to test the new
compound, they found that it had an impressive ability to calm laboratory
and even wild animals, producing muscle relaxation as well as preventing
convulsions. When the chemistry of the drug was further evaluated, it
was found not to have the structure Sternbach originally thought it had,
being in fact a benzodiazepine (a minor tranquilizer) and was given the
name chlordiazepoxide. This would actually become marketed as Librium
and you can't tell the Valium story without including Librium. In an attempt
to determine what aspects of Librium's chemical structure were related
to which aspects of its effects, the researchers synthesized several other
drugs in the benzodiazepine family. Most of them produced very similar
effects to Librium - except one, which was found to be much more potent.
This drug was given the generic name of diazepam and the trade name Valium.
Since the development of Librium and Valium, drug companies have synthesized
hundreds of other benzodiazepines and there are currently over 25 benzodiazepines
available by prescription in Western countries. It is however, still possible
to buy Valium and other benzodiazepines over the counter in many countries
like India
How does a benzodiazepine actually work in my brain?
The complex
actions of the benzodiazepines are still beyond our understanding and
scientists will be the first to admit that there is still a lot more to
learn. Rather ironic considering the amount of pills that have been prescribed
to millions of people over the years. The knowledge according to researchers,
is that anxiety is a state created by an anatomical and biochemical circuit
in the brain called the limbic system. It is a very old and difficult
to define, area of the brain that is present in evolutionary simple animals
as well as in the more recently developed 'higher' animals, such as humans.
Researchers have found that damage to certain parts of the limbic system
can result in changes in emotional behaviour. Monkeys that normally display
fear and aggression towards humans have been shown to become quite tame
when specific areas of their limbic systems are destroyed. Similarly in
rats, stimulation in this area with a mild electrical current produces
reactions of defensiveness and fear. To explain how drugs work in the
brain, you need to understand how the brain sends its messages. Electrical
messages move around the brain from cell to cell. When a message reaches
a gap (or synapse,) between cells, it needs to be 'ferried' across by
a neurotransmitter chemical released by the cell. Once the job is done,
the neurotransmitter is reabsorbed by the next nerve cell, to await the
next message. On the receiving end of each nerve are receptors which are
sensitive to the message carried by the neurotransmitters. Researchers
have found that benzodiazepines will actually attach (bind) themselves
to particular receptors and in fact, they have even called them benzodiazepine
receptors . The more effective a benzo is in relieving anxiety, the more
strongly it has been known to bind to these benzodiazepine receptors.
Other drugs that reduce anxiety like alcohol and barbiturates, will not
bind to those same receptors. The second part of this story is about another
neurotransmitter called GABA (gamma- aminobutric acid) which is found
in the brain and spinal cord. Its particular job is to slow down the activity
of the nerves that it contacts. It also seems to help the benzodiazepine
drugs bind even more those particular receptors, therefore increasing
the effect. The scientists theorize that benzos like Valium work by increasing
GABA's ability to do its own job - ie. to decrease the activity of many
groups of nerves in the brain and spinal column. This slowing or reducing
of messages to nerves in the limbic system will then reduce the reaction
time to anxiety producing events. So, we have a reduction of the nerve
activity in the spinal cord and limbic system which will produce muscle
relaxation and, via the limbic system, relief from certain fears and anxieties.
At the same time, the benzo's may reduce the ability of other neurotransmitters
to stimulate a fear reaction
Why has Valium had such very good - then seriously bad, press?
In the 1960's and early 70's, Valium and Librium seemed to meet all the
criteria for a good treatment for anxiety. They produced little actual
sedation at effective doses, were quite safe even when taken in large
amounts and 'appeared' to produce little risk of dependence or abuse.
Valium was riding on the wave of the barbiturate backlash and Valium and
Librium were seen as the perfect answer as overdoses on Valium alone were
practically unheard of. In 1975 in the US, Valium seemed to really hit
the heights, with 61.3 million prescriptions being written that year alone
and it remained a best-seller for two and a half decades. In Britain,
benzo's are still the most commonly prescribed medication. It is interesting
to note that studies have concluded Valium to be effective for fairly
severe long lasting disorders. However tranquillisers, particularly Valium,
are used frequently by people with less severe, relatively temporary anxiety
(i.e. stress brought about by a specific stressful event). However, medical
studies have actually told us very little about the ability of tranquillisers
to relieve this type of anxiety.
Today, massive medical documentation clearly shows that dependence is
a common and almost anticipated complication in the use of benzos such
as Valium. Debate continues however, with some doctors and scientists
still maintaining that the only adverse effect of chronic benzo use is
dependence and possible withdrawal symptoms when the drugs are discontinued.
Others have found a clear correlation between poor mental health of long
term users whose adverse effects include chronic depression, OCD (Obsessive
Compulsive Disorder), personality changes and phobias. M. Lader at the
institute of psychiatry in London estimates the incidences of these adverse
reactions at about 5%, even in short term use of the drugs.
The
problems with dependence
Dependence is not related to self control or to physical or psychological
weakness. Dependence can easily be reproduced in experimental animals
or even tissues taken from experimental animals
There is reason to
be concerned about the dangers of long term use of Valium. Many opiate
users have come to know Valium and associated benzos intimately, either
as a booster for their gear, or as part of a home detox or something when
you're hanging out. Many users have also got their benzo habits kicked
off by the black market trade in these drugs, eventually turning up at
their Gp's with a benzo dependence. The experiences described as Valium
withdrawals are reactions to the absence of Valium in the body, usually
following high dosages or long term use of the drug. These reactions,
most frequently jitteriness, tremors, anxiety, insomnia, strange tastes
and smells, tinnitus, panic, sweating, cramps, and, under extreme conditions,
convulsions (seizures), can all indicate physical dependence on the drug.
Post withdrawal symptoms can last from several weeks, months, even longer
and continued support may be required to prevent relapse. Dependence is
not related to self control or to physical or psychological weakness .
Dependence can easily be reproduced in experimental animals or even tissues
taken from experimental animals. Physical or psychological dependence
can develop very quickly with these drugs and it seems that some people
are more susceptible to dependence than others. Psychologist W. O'Mara talks of
the paradoxical effects of Valium. "When the drug is prescribed irresponsibly,
without a clear explanation of the withdrawals and adverse effects, the
withdrawal symptoms can become very frightening and if not understood
as being part of the withdrawal syndrome, can sometimes be misunderstood
as mental illness.
Diazepam should be used with caution in people with
impaired liver or kidney function (such as hepatitis C) and sedation,
or respiratory and cardiovascular (heart) depression may be enhanced by
other drugs like opiods, neuroleptics (drugs for epilepsy) and alcohol.
It should not be used alone to treat bereavement, depression or anxiety
that's associated with depression as it maymust always be sought from
a sympathetic GP when detoxing of these drugs.
(We hope all Prisons Governors
take note of this fact as they repeatedly withdraw benzo users far too
quickly, often precipitate suicide or aggressive behaviour. It can be
used for short term severe anxiety states, when it has been clearly established
that these are not depression related".
Never
reduce the intake of a benzodiazepine like Valium rapidly or overnight
if you have been taking them for more than one month. Help without any
reducing at all - that's another article - ed).
The Drug Companies and the Millennium
Adverse reactions. In the U.S., manufacturers feel compelled to report
adverse reactions and note that e.g. Depression can occur. In most European
countries however, drug manufacturers do not even mention this adverse
reaction, even though depression is a long-term effect that has been well-documented
in medical literature. Since these reactions are often interpreted as
a worsening health, many patients become ensnared by dependence merely
because they respond with adverse reactions. It is high time for WHO (The
World Health Organisation) and national regulatory authorities to force
ROCHE and other benzodiazepine manufacturers to supply complete and accurate
information on the many adverse reactions that are possible.
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(All references
used are available from Black Poppy 0181 968 3311 - ed).