Who are Cystagon's main competitors?

No direct comparators detected in our index.

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Last reviewed 2026-06-10 · How we verify

Cystagon — Competitive Intelligence Brief

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

Cystagon (Mercaptamine) competitive landscape: 0 comparators, recent regulatory actions, upcoming PDUFA, patent timeline. Class: Cystine Depleting Agent. Area: Metabolic.

marketed Cystine Depleting Agent Metabolic Small molecule Live · refreshed every 30 min

Target snapshot

Cystagon (Mercaptamine) — Mylan. Cystagon works by binding to cystine and forming a disulfide bond, effectively removing cystine from the body.

Comparator set

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
Cystagon TARGET	Mercaptamine	Mylan	marketed	Cystine Depleting Agent		1994-01-01

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)

2027-01-26 — Cystagon · 9925158 · US
2027-01-26 — Cystagon · 9192590 · US
2027-01-26 — Cystagon · 9198882 · US
2027-01-26 — Cystagon · 9925156 · US
2027-01-26 — Cystagon · 9925157 · US
2027-07-26 — Cystagon · 9192590*PED · US
2027-07-26 — Cystagon · 9198882*PED · US
2027-07-26 — Cystagon · 9925156*PED · US
2027-07-26 — Cystagon · 9925157*PED · US
2027-07-26 — Cystagon · 9925158*PED · US
2027-09-22 — Cystagon · 8026284 · US
2028-03-22 — Cystagon · 8026284*PED · US
2034-06-17 — Cystagon · 9173851 · US
2034-06-17 — Cystagon · 9233077 · US
2034-12-17 — Cystagon · 9173851*PED · US
2034-12-17 — Cystagon · 9233077*PED · US
2036-08-16 — Cystagon · 10548859 · US
2036-08-16 — Cystagon · 10328037 · US
2036-08-16 — Cystagon · 10143665 · US
2036-08-16 — Cystagon · 10905662 · US
2037-02-16 — Cystagon · 10548859*PED · US
2037-02-16 — Cystagon · 10328037*PED · US
2037-02-16 — Cystagon · 10143665*PED · US
2037-02-16 — Cystagon · 10905662*PED · US

Sponsor landscape (Cystine Depleting Agent class)

Mylan · 1 drug in this class

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Cite this brief

Drug Landscape (2026). Cystagon — Competitive Intelligence Brief. https://druglandscape.com/ci/mercaptamine. Accessed 2026-06-10.

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