As an herbalist, I have strong concerns about the growing popularity 
and widespread use of the ancient herb, Mucuna pruriens, as an herbal 
and dietary supplement.  Mucuna pruriens has an almost magical ability 
to improve motivation, well being, energy and sex drive along with 
decreasing the tendency to overeat.  These properties are a result of 
its contents of natural L-dopa, a direct precursor to the 
neurotransmitter dopamine.  Dopamine is always present in the nervous 
system.  Ultra-low levels (or dysfunction of dopamine receptors) lead to
 conditions like Parkinson’s.  Normal levels maintain proper function of
 the nervous system, promote normal motivation and sex drive and help to
 regulate the appetite.  We experience a stronger sense of well-being 
when dopamine is released in response to activities such as engaging in 
something novel or seeing a beautiful sunset.  We release even more if 
we accomplish a long-term goal or have a profound experience.  Dopamine 
is artificially elevated in response chemicals contained in alcohol, 
cigarettes, cocaine, crystal meth and heroin as well as from 
overeating.  Excessive exposure to dopamine results in dopamine 
receptors not working properly.  As the nervous system needs higher and 
higher levels of dopamine to produce the same response, an individual 
seeks out more and more of the stimulating substance or activity.  This 
is the heart of addiction.
With its naturally-occurring L-dopa, Mucuna can be carefully used as a
 natural remedy to treat conditions such as addiction, obesity, 
dopamine-related depression or Parkinson’s.  However this MUST be done 
in conjunction with rehabilitation of the dopamine receptors.  
Otherwise, it actually exacerbates the problem and causes further 
damage.  If given to people who suffer with depression from low 
serotonin, Mucuna can actually make the depression more severe by 
further lowering serotonin levels.  (Dopamine tends to suppress 
seretonin)
The addition of Mucuna to general dietary supplements and even to 
some multivitamins is completely irresponsible.  It has great capacity 
for misuse and in the long term could have health consequences.  Because
 of the seemingly magical effects of L-dopa, almost all people notice 
they feel better on these supplements and notice they feel worse when 
they stop them.  This is no different than creating another addiction.
Because of its effectiveness, I also have concerns about other 
herbalists and health care practitioners carelessly prescribing it 
without fully understanding its mechanism of action.  I am pro-education
 and anti-regulation.  I think Mucuna pruriens is a natural substance 
that practitioners need to actively educate themselves and the general 
public about.
http://karenkurtak.com/mucuna-pruriens-concerns-about-longterm-side-effects-from-overuse-and-misuse/ 
 
 
 
 
 
 
 
