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Another trial found that vitamin B 6 supplementation (20 mg/day of pyridoxine hydrochloride) for three months improved memory, especially long-term memory, in 38 healthy elderly men (70-79 years) compared to 38 men of similar age who received a placebo (118)
1H MRS measurement of cortical GABA and glutamate in primary insomnia and major depressive disorder: relationship to sleep quality and depression severity
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