Who are L-Histidine's main competitors?

Direct comparators (same drug class / molecular target / therapeutic area): Neurontin, L-Phenylalanine, gabapentine, Nutrestore, Sinemet Cr, Inbrija.

How often does this brief refresh?

Every 30 minutes from primary sources (FDA, EMA, MHRA, PMDA, ClinicalTrials.gov, USPTO). Subscribe to the RSS feed below for push alerts.

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Last reviewed 2026-05-13 · How we verify

L-Histidine — Competitive Intelligence Brief

L-Histidine (HISTIDINE) competitive landscape: 6 comparators, recent regulatory actions, upcoming PDUFA, patent timeline. Class: Amino Acid [EPC]. Area: Other.

marketed Amino Acid [EPC] Large neutral amino acids transporter small subunit 1 Other Small molecule Live · refreshed every 30 min

Target snapshot

L-Histidine (HISTIDINE).

Comparator set (6 drugs)

Auto-detected by same drug class / molecular target / therapeutic area, ranked by phase + recency. Override with ?vs=slug1,slug2,….

Drug	Generic	Sponsor	Phase	Class	Target	Approval / PDUFA
L-Histidine TARGET	HISTIDINE		marketed	Amino Acid [EPC]	Large neutral amino acids transporter small subunit 1
Neurontin	gabapentin	Generic (originally Parke-Davis/Pfizer)	marketed	Gabapentinoid (anticonvulsant/neuropathic pain agent)	Large neutral amino acids transporter small subunit 1, Adenosine receptor A1, Alpha-2A adrenergic receptor	1993-12-30
L-Phenylalanine	PHENYLALANINE		marketed		Intestinal-type alkaline phosphatase, Large neutral amino acids transporter small subunit 1, E3 ubiquitin-protein ligase XIAP
gabapentine	gabapentine	Dominik Irnich	marketed		Large neutral amino acids transporter small subunit 1, Adenosine receptor A1, Alpha-2A adrenergic receptor
Nutrestore	GLUTAMINE	Emmaus Medcl	marketed	Amino Acid [EPC]		2004-01-01
Sinemet Cr	CARBIDOPA	Aton	marketed	Aromatic Amino Acid [EPC]	Lysine-specific demethylase 4E	1975-01-01
Inbrija	LEVODOPA	Merz	marketed	Aromatic Amino Acid [EPC]	Tyrosine-protein kinase Fyn	1970-01-01

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)

2029-02-03 — Inbrija · RE43711 · Method of Use · US
2032-11-16 — Inbrija · 8685442 · Formulation · US
2032-11-16 — Inbrija · 8945612 · Formulation · US
2032-11-16 — Inbrija · 8545878 · Formulation · US
2032-11-16 — Inbrija · 9393210 · Formulation · US
2033-10-21 — Inbrija · 12458615 · Method of Use · US

Sponsor landscape (Amino Acid [EPC] class)

· 6 drugs in this class
Emmaus Medcl · 1 drug in this class

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Cite this brief

Drug Landscape (2026). L-Histidine — Competitive Intelligence Brief. https://druglandscape.com/ci/histidine. Accessed 2026-05-13.

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