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B12 can also lead to improved mental functions like memory and concentration, better sleep, less stress, and even healthy skin, hair, and nails
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doi: 10.1007/s40744-019-00182-7 44 KrauszSBoumansMJGerlagDMLufkinJvan KuijkAWBakkerAet al
Cytotherapy, 18 (8), 10371042
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2020: A systematic review confirmed ALCAR + L-carnitine significantly improved total sperm motility, progressive motility, and morphology at doses of at least 3 g/day, but did not affect sperm concentration or clinical pregnancy rates [5][48]
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