Who are Sublingual sildenafil's main competitors?

Direct comparators (same drug class / molecular target / therapeutic area): Tadalafil versus tamsulosin as MET, LEVITRA (vardenafil), Viagra, Viagra (sildenafil citrate), Revatio, ZYDENA TAB.75mg(Udenafil 75mg).

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Last reviewed 2026-05-14 · How we verify

Sublingual sildenafil — Competitive Intelligence Brief

Sublingual sildenafil (Sublingual sildenafil) competitive landscape: 6 comparators, recent regulatory actions, upcoming PDUFA, patent timeline. Class: Phosphodiesterase type 5 inhibitor. Area: Urology.

phase 3 Phosphodiesterase type 5 inhibitor PDE5 Urology Small molecule Live · refreshed every 30 min

Target snapshot

Sublingual sildenafil (Sublingual sildenafil) — N4 Pharma UK Ltd.. Sublingual sildenafil works by increasing blood flow to the penis to treat erectile dysfunction.

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
Sublingual sildenafil TARGET	Sublingual sildenafil	N4 Pharma UK Ltd.	phase 3	Phosphodiesterase type 5 inhibitor	PDE5
Tadalafil versus tamsulosin as MET	Tadalafil versus tamsulosin as MET	Beni-Suef University	marketed	PDE5 inhibitor (tadalafil) vs. alpha-1A adrenergic antagonist (tamsulosin)	PDE5 (tadalafil) vs. alpha-1A adrenergic receptor (tamsulosin)
LEVITRA (vardenafil)	LEVITRA (vardenafil)	GlaxoSmithKline	marketed	Phosphodiesterase type 5 (PDE5) inhibitor	PDE5 (phosphodiesterase type 5)
Viagra	Sildenafil Citrate	Pfizer Inc.	marketed	Phosphodiesterase-5 (PDE5) inhibitor	Phosphodiesterase type 5 (PDE5)
Viagra (sildenafil citrate)	Viagra (sildenafil citrate)	Pfizer's Upjohn has merged with Mylan to form Viatris Inc.	marketed	Phosphodiesterase type 5 (PDE5) inhibitor	PDE5 (phosphodiesterase type 5)
Revatio	Sildenafil Citrate	Pfizer Inc.	marketed	PDE5 inhibitor	Phosphodiesterase type 5 (PDE5)
ZYDENA TAB.75mg(Udenafil 75mg)	ZYDENA TAB.75mg(Udenafil 75mg)	Samsung Medical Center	marketed	Phosphodiesterase type 5 (PDE5) inhibitor	PDE5 (phosphodiesterase type 5)

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 (Phosphodiesterase type 5 inhibitor class)

N4 Pharma UK Ltd. · 1 drug in this class

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Cite this brief

Drug Landscape (2026). Sublingual sildenafil — Competitive Intelligence Brief. https://druglandscape.com/ci/sublingual-sildenafil. Accessed 2026-05-14.

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