Source Naturals, L-Phenylalanine, 100 Tablets
Source Naturals · 100 tablets · Tablets
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Product description
500 mgDietary SupplementFree FormAn Essential Amino AcidSuitable For Vegetarians L-Phenylalanine, an essential amino acid, is a precursor of the amino acid tyrosine and a whole series of neurotransmitters and hormones. Phenylalanine is first converted to tyrosine, which becomes L-dopa, which converts to norepinephrine, a key neurotransmitter and an adrenal hormone. L-Phenylalanine is also a direct precursor of PEA (phenylethylamine), another important neurotransmitter.
Price history
Best price so far: £9.63 at Iherb on 22 Jul 2026