( ( ( ( The ( amino ( acids ( ( phenylalanine or ) tyrosine ) ) ) ) , ) ( ( ( taken ( in ( ( daily doses ) ( of ( 1500 mg ) ) ) ) ) , ) ( to ( ( boost ( levels ( of ( brain ( ( hormones and ) neurotransmitters ) ) ) ) ) ( -LRB- ( ( refer ( to ( ( Phenylalanine and ) ( Tyrosine-Dosing ( and ( Precautions protocol ) ) ) ) ) ) -RRB- ) ) ) ) ) ) . )
(ROOT (NP (NP (DT The) (JJ amino) (NNS acids) (NN phenylalanine) (CC or) (NN tyrosine)) (, ,) (VP (VBN taken) (PP (IN in) (NP (NP (JJ daily) (NNS doses)) (PP (IN of) (NP (CD 1500) (NN mg))))) (, ,) (S (VP (TO to) (VP (VB boost) (NP (NP (NNS levels)) (PP (IN of) (NP (NN brain) (NNS hormones) (CC and) (NNS neurotransmitters)))) (PRN (-LRB- -LRB-) (S (VP (VB refer) (PP (TO to) (NP (NP (NNP Phenylalanine)) (CC and) (NP (JJ Tyrosine-Dosing) (CC and) (NNPS Precautions) (NN protocol)))))) (-RRB- -RRB-)))))) (. .)))
The amino acids phenylalanine or tyrosine, taken in daily doses of 1500 mg, to boost levels of brain hormones and neurotransmitters (refer to Phenylalanine and Tyrosine-Dosing and Precautions protocol).
(ROOT (S (NP (NNS Catecholamines)) (VP (VBP are) (NP (NP (DT a) (NN class)) (PP (IN of) (NP (JJ amine) (NNS hormones))) (SBAR (WHNP (WHNP (DT that)) (NP (WRB when) (JJ synthesised))) (S (VP (VBP form) (NP (DT the) (JJ amino) (NN acid) (NN tyrosine))))))) (. .)))