Phenylalanine
Phenylalanine is an essential amino acid required for protein synthesis and neurotransmitter production. High levels of phenylalanine can be harmful in phenylketonuria (PKU). [85]
[83]Pilotto A, Zipser CM, Leks E, et al. Phenylalanine Effects on Brain Function in Adult Phenylketonuria. Neurology. 2021;96(3):e399-e411. doi:10.1212/WNL.0000000000011088
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