IP Library Granted Patent US 12,594,251
Granted Patent B2
US 12,594,251 · App. 18/248,841 · Granted Apr 7, 2026

Benzalkonium chloride foruse in treating conjunctivitis and/or covid-19

Inventors: Patrick McCormick (Rochester, NY); Kimberly Millard (Rochester, NY)
Assignee: Bausch + Lomb Ireland Limited
A61K31/14A61K9/0048A61K9/08A61K31/4402A61K31/498A61K31/55A61P31/14
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Quick Facts
Patent No.
US 12,594,251
App. No.
18/248,841
Granted
Apr 7, 2026
Kind
B2
Abstract

Methods for treating coronavirus disease 2019 (COVID-19), including at least one ocular manifestation of COVID-19, methods for treating conjunctivitis, and methods for reducing COVID-19 transmission comprising administering an effective amount of benzalkonium chloride are disclosed. Pharmaceutical compositions comprising benzalkonium chloride are also disclosed.

Claims (40)

1 . A method for treating at least one ocular manifestation of coronavirus disease 2019 (COVID-19) comprising administering to a subject in need thereof a pharmaceutical composition comprising an effective amount of benzalkonium chloride, pheniramine maleate, and naphazoline HCl.

2 . The method of claim 1 , wherein the pharmaceutical composition comprises 0.001% (w/v) to 0.02% (w/v) benzalkonium chloride.

3 . The method of claim 1 , wherein the pharmaceutical composition comprises 0.01% (w/v) benzalkonium chloride.

4 . The method of claim 1 , wherein the pharmaceutical composition is the form of an eye drop, a suspension, a gel, an ointment, an injectable solution, or a spray.

5 . The method of claim 1 , wherein the pharmaceutical composition is topically administered.

6 . The method of claim 1 , wherein the pharmaceutical composition is administered to at least one eye of the subject.

7 . The method of claim 1 , wherein treating at least one ocular manifestation of COVID-19 comprises treating at least one disease or condition chosen from eye redness, conjunctivitis, keratoconjunctivitis, dry eye disease, blurred vision, conjunctival hyperaemia, ocular irritation, foreign body sensation, epiphora, eyelid edema, and chemosis.

8 . The method of claim 1 , wherein treating at least one ocular manifestation of COVID-19 comprises treating conjunctivitis.

9 . The method of claim 1 , wherein treating at least one ocular manifestation of COVID-19 comprises improving visual acuity.

10 . The method of claim 1 , wherein treating at least one ocular manifestation of COVID-19 comprises reducing eye redness, ocular irritation, or foreign body sensation.

11 . A method for reducing a risk of SARS-COV-2 ocular transmission comprising administering to a subject in need thereof a pharmaceutical composition comprising an effective amount of benzalkonium chloride, pheniramine maleate, and naphazoline HCl.

12 . The method of claim 11 , wherein the pharmaceutical composition comprises 0.001% (w/v) to 0.02% (w/v) benzalkonium chloride.

13 . The method of claim 11 , wherein the pharmaceutical composition comprises 0.01% (w/v) benzalkonium chloride.

14 . The method of claim 11 , wherein the pharmaceutical composition is the form of an eye drop, a suspension, a gel, an ointment, an injectable solution, or a spray.

15 . The method of claim 11 , wherein the pharmaceutical composition is topically administered.

16 . The method of claim 11 , wherein the pharmaceutical composition is administered to at least one eye of the subject.

17 . A method for preventing coronavirus disease 2019 (COVID-19) comprising administering to a subject in need thereof a pharmaceutical composition comprising an effective amount of benzalkonium chloride, pheniramine maleate, and naphazoline HCl.

18 . The method of claim 17 , wherein the pharmaceutical composition comprises 0.001% (w/v) to 0.02% (w/v) benzalkonium chloride.

19 . The method of claim 17 , wherein the pharmaceutical composition comprises 0.01% (w/v) benzalkonium chloride.

20 . The method of claim 17 , wherein the pharmaceutical composition is the form of an eye drop, a suspension, a gel, an ointment, an injectable solution, or a spray.

21 . The method of claim 17 , wherein the pharmaceutical composition is topically administered.

22 . The method of claim 17 , wherein the pharmaceutical composition is administered to at least one eye of the subject.

23 . A method for reducing an ocular SARS-COV-2 viral load comprising administering to a subject in need thereof a pharmaceutical composition comprising an effective amount of benzalkonium chloride, pheniramine maleate, and naphazoline HCl.

24 . The method of claim 23 , wherein the pharmaceutical composition comprises 0.001% (w/v) to 0.02% (w/v) benzalkonium chloride.

25 . The method of claim 23 , wherein the pharmaceutical composition comprises 0.01% (w/v) benzalkonium chloride.

26 . The method of claim 23 , wherein the pharmaceutical composition is the form of an eye drop, a suspension, a gel, an ointment, an injectable solution, or a spray.

27 . The method of claim 23 , wherein the pharmaceutical composition is topically administered.

28 . The method of claim 23 , wherein the pharmaceutical composition is administered to at least one eye of the subject.

29 . A method for reducing an intranasal SARS-COV-2 viral load comprising administering to a subject in need thereof a pharmaceutical composition comprising an effective amount of benzalkonium chloride, pheniramine maleate, and naphazoline HCl.

30 . The method of claim 29 , wherein the pharmaceutical composition comprises 0.001% (w/v) to 0.2% (w/v) benzalkonium chloride.

31 . The method of claim 29 , wherein the pharmaceutical composition comprises 0.005% (w/v) to 0.2% (w/v) benzalkonium chloride.

32 . The method of claim 29 , wherein the pharmaceutical composition comprises 0.005% (w/v) to 0.1% (w/v) benzalkonium chloride.

33 . The method of claim 29 , wherein the pharmaceutical composition comprises 0.01% (w/v) benzalkonium chloride.

34 . The method of 29 , wherein the pharmaceutical composition is the form of a spray.

35 . A method for treating or preventing coronavirus disease 2019 (COVID-19) comprising intranasally administering to a subject in need thereof a pharmaceutical composition comprising an effective amount of benzalkonium chloride, pheniramine maleate, and naphazoline HCl.

36 . The method of claim 35 , wherein the pharmaceutical composition comprises 0.001% (w/v) to 0.2% (w/v) benzalkonium chloride.

37 . The method of claim 35 , wherein the pharmaceutical composition comprises 0.005% (w/v) to 0.2% (w/v) benzalkonium chloride.

38 . The method of claim 35 , wherein the pharmaceutical composition comprises 0.005% (w/v) to 0.1% (w/v) benzalkonium chloride.

39 . The method of claim 35 , wherein the pharmaceutical composition comprises 0.01% (w/v) benzalkonium chloride.

40 . The method of claim 35 , wherein the pharmaceutical composition is the form of a spray.

Assignments (4)
ASSIGNMENT OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (064712/0167) Recorded Aug 14, 2025
From: CITIBANK, N.A., AS RESIGNING AGENT
To: JPMORGAN CHASE BANK, N.A. AS SUCCESSOR AGENT
Reel/Frame 072460/0637 →
PATENT SECURITY AGREEMENT Recorded Jul 1, 2025
From: BAUSCH & LOMB INCORPORATED; ALDEN OPTICAL LABORATORIES, INC.; BAUSCH + LOMB IRELAND LIMITED
To: CITIBANK, N.A., AS NOTES COLLATERAL AGENT
Reel/Frame 071773/0871 →
SECURITY INTEREST Recorded Feb 12, 2024
From: BAUSCH + LOMB IRELAND LIMITED
To: CITIBANK, N.A., AS NOTES COLLATERAL AGENT
Reel/Frame 066552/0041 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Aug 24, 2023
From: BAUSCH + LOMB IRELAND LIMITED
To: CITIBANK, N.A. AS COLLATERAL AGENT
Reel/Frame 064712/0167 →
Continuity (4)
Provisional Application 63092399 · Oct 15, 2020
Provisional Application 63183928 · May 4, 2021
Provisional Application 63226614 · Jul 28, 2021
Related Publication 20230390219A1 · Dec 7, 2023
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