L-Tryptophan — Competitive Intelligence Brief

L-Tryptophan (L-Tryptophan) competitive landscape: 6 comparators, recent regulatory actions, upcoming PDUFA, patent timeline. Class: Amino acid supplement. Area: Psychiatry/Neurology.

marketed Amino acid supplement Psychiatry/Neurology Small molecule

Target snapshot

L-Tryptophan (L-Tryptophan) — McMaster University. L-Tryptophan is an essential amino acid that serves as a precursor for serotonin and melatonin synthesis, supporting neurotransmitter production and mood regulation.

Comparator set (6 drugs)

Drug	Generic	Sponsor	Phase	Class	Target	Approval / PDUFA
L-Tryptophan TARGET	L-Tryptophan	McMaster University	marketed	Amino acid supplement
L-Serine	L-Serine	Elijah W. Stommel	marketed	Amino acid supplement
L-Arginine	L-Arginine	The University of Texas at Arlington	marketed	Amino acid supplement	Nitric oxide synthase substrate
L-lysine	L-lysine	University of Zurich	marketed	Amino acid supplement
5-Hydroxytryptophan	5-Hydroxytryptophan	Elizabeth Berry-Kravis	marketed	Serotonin precursor / amino acid supplement	Aromatic amino acid decarboxylase (enzyme substrate); indirect serotonin system modulation
L-Tyrosine	L-Tyrosine	Hadassah Medical Organization	marketed	Amino acid supplement
L-Carnitine ( high dose)	L-Carnitine ( high dose)	Ain Shams University	marketed	Amino acid supplement / Metabolic agent	Carnitine palmitoyltransferase (CPT) system

Recent regulatory actions (last 90 days)

No regulatory actions in the last 90 days for this set.

Upcoming PDUFA dates (next 180 days)

No PDUFA dates in the next 180 days for this set.

Patent timeline (forward window)

No upcoming patent expiries for this set.

Sponsor landscape (Amino acid supplement class)

1. Air Force Military Medical University, China · 1 drug in this class
2. Elijah W. Stommel · 1 drug in this class
3. Hadassah Medical Organization · 1 drug in this class
4. Keith D Lindor, M.D. · 1 drug in this class
5. McMaster University · 1 drug in this class
6. The University of Texas at Arlington · 1 drug in this class
7. Ukrainian Medical Stomatological Academy · 1 drug in this class
8. University Hospital, Strasbourg, France · 1 drug in this class
9. University of Colorado, Denver · 1 drug in this class
10. University of Miami · 1 drug in this class