Drive provides important co-factors for energy, balanced brain chemistry and get-up-and-go, including the amino acid, Tyrosine, plus co-factors, for making the brains natural neurotransmitters, dopamine and noradrenalin.

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Drive provides important co-factors for energy, balanced brain chemistry and get-up-and-go, including the amino acid, Tyrosine, plus co-factors, for making the brains natural neurotransmitters, dopamine and noradrenalin.

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Quest L-Tyrosine provides 500mg of L-Tyrosine. Tyrosine is the building block for several neurotransmitters including serotonin and dopamine which may increase mental alertness. Use to support mental well-being and thyroid health.

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The body uses the minerals Iodine and Selenium to make thyroid hormones, essential for heat, energy and metabolism. This Thyroid Support Formula provides Iodine and Selenium, plus Tyrosine and 9 other vitamins and minerals.

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Drive provides important co-factors for energy, balanced brain chemistry and get-up-and-go, including the amino acid, Tyrosine, plus co-factors, for making the brains natural neurotransmitters, dopamine and noradrenalin.

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This Positive Outlook formula provides B Vitamins and amino acids, including Glutamine, Tyrosine and 5HTP, to help maintain healthy levels of the minds most important neurotransmitters for feeling good and for optimum wellbeing.

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