Kava kava is a tropical shrub with big leaves in the shape of hearts. The root of that plant is mainly used to treat anxiety disorders and to relive anxiety associated with stress. Lower doses of Kava cam improve activity and awareness, while large doses may cause drowsiness.
Kava is often prescribed to treat stiffness, insomnia, pain, jet lag, uncontrolled epilepsy and anxiety. Scientists have found that kava contains chemicals called kavapyrones. They reduce convulsions and enable muscle relaxation. The scientists have also found that kavapyrones cause in the brain reactions similar to the reactions cause by medications used for treatment of anxiety and depression. Unlike those medicines, the compounds found in kava do not cause negative side effects on heart rating, thinking ability, breathing and blood pressure.
Kava changes the amount of neurotransmitters in the blood because the plant stops the absorption of the neurotransmitter norepinephrine. High levels of norepinephrine in the blood can help for relaxation and can reduce anxiety. Also, kava increases the number of attachment sited for gamma aminobutyric acid (GABA) which is another neurotransmitter. The increased number of GABA sites may enhance GABA activity and this may cause sedation.
In addition, kava contains chemicals that prevent the enzyme monoamine oxidase-B (MAO-B) from affecting the level of dopamine, which is also neurotransmitter. MAO-B and dopamine have both affect the body’s emotional stability. However, the effects of kava in this direction are not very well-known.
Standardized kava extract can be taken three times per day. The total daily amount of kava should not be more than 210 mg. One dose of 210 mg can be used to treat insomnia. Doses of 2-4 g can be taken three times per day to treat stress, insomnia and anxiety.
Kava can cause liver damage, so people who suffer from liver disease and take liver-compromising medicine should consult a doctor before they take kava.
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