tyrosine is a natural nutrient and the building block to your pleasure chemical messenger; dopamine. Dopamine is released when you derive pleasure from activities such as sex, great food and accomplishment. ingredients: tyrosine (natural), vegetable cellulose capsule, brown rice flour, anti-caking agent: silicon dioxide, magnesium stearate and vitamin b12 *our tyrosine is maufactured using non-GMO corn in the fermentation process. take 1 tablet with a meal. dopamine is your reward and pleasure chemical messenger which is released when you derive pleasure from activities such as sex, great food or accomplishment. According to the Natural Medicines Database, dopamine is also responsible for helping to modulate body movements, sex drive (libido), emotional states and the capacity to handle everyday stress. 1 in supporting dopamine production, tyrosine can help to enhance emotional wellbeing and mental function especially under situations involving environmental and emotional stress or when dopamine levels require additional support [7,8,9,]   1 nootriment.com/tyrosine-dopamine 2 Fernstrom JD; Can nutrient supplements modify brain function? American Journal of Clinical Nutrition.2000 Jun;71(6 Suppl):1669S-75S.3 Steenbergen, L et al Tyrosine promotes cognitive flexibility: evidence from proactive vs.reactive control during task switching performance. Neuropsychologia 69, 50–55. 2015 4 Bryant J. et al - Effect of tyrosine supplementation on clinical and healthy populations under stress or cognitive demands Journal of Psychiatric research vol 70 55-57 2015 5 Natural Medicines Comprehensive Database; 6 JACOBS Relationship Between L-Tyrosine & Dopamine Oct 03, 2017 livestrong.com 7 Sandra Lopez et al - The dopamine D4 receptor gene 48-base-pair-repeat polymorphism and mood disorders: A meta-analysis Biological Psychiatry 2005 May 1;57(9):999-1003 8 Mouret J et al L-tyrosine cures, immediate and long term, dopamine-dependent depressions. Clinical and polygraphic studies C R l’Academie des sciences 1988;306(3):93-8. 9 Kathleen A. et al Nutrients and Botanicals for Treatment of Stress: Adrenal Fatigue, Neurotransmitter Imbalance, Anxiety, and Restless Sleep Alternative Medicine Review Volume 14 no.2 114-40 2009 10 Nieoullon, A. Dopamine and the regulation of cognition and attention – Progress in Neurobiology. Vol 67, 53–83. 2002 11 Bowman, R. E. et al Chronic stress effects on memory: sex differences in performance and monoaminergic activity Journal of Hormones and Behavior 2003 Vol 43 48–59 12 Baumeister, R. F et al Ego depletion: Is the active self a limited resource? Journal of Personality and Social Psychology Vol 74, 1252–1265. 13 Colzato, L. S et al Eating to stop: tyrosine supplementation enhances inhibitory control but not response execution. Neuropsychologia 2014 vol 62, 398-402.14 Deijen, J. B et al - Effect of tyrosine on cognitive function and blood pressure under stress. Brain Research Bulletin 1994 Vol 33, 319–323.15 Shurtleff, D et al - Tyrosine reverses a cold-induced working memory deficit in humans. Journal of Pharmacology Biochemistry and Behavior (1994) Vol 47, 935–941. 16 Mahoney et al Tyrosine supplementation mitigates memory decrements during cold exposure. Physiology and Behavior 2007 92(4), 575–582.