Antihistamine
Bepotastine besilate
1.5% ophthalmic solution
1 drop in the affected eye(s) twice daily
3+ years
Eye drops.
Dual action
Olopatadine
0.2% ophthalmic solution
1 drop in each affected eye once daily
18+
Dual action
Olopatadine
0.1% ophthalmic solution
1–2 drops in each affected eye twice daily
3+ years
Dual action
Olopatadine
0.2% ophthalmic solution
1 drop in each affected eye once daily
18+
Dual actionRepresentative · US packaging
Olopatadine
0.7% ophthalmic solution
1 drop in each affected eye once daily
2+ years
Dual action
Representative · US packaging
Ketotifen
0.025% ophthalmic solution
1 drop in the affected eye(s) every 8–12 hours
Over 3 years · geriatric review
Mast-cell stabilizerRepresentative · UK packaging
Lodoxamide
0.1% ophthalmic solution
1–2 drops in each eye four times daily at regular intervals
4+ years
Mast-cell stabilizer
Sodium cromoglycate
2% ophthalmic solution
1–2 drops in each eye four times daily
5–65 years
Dual action
Olopatadine
0.1% ophthalmic solution
1–2 drops in each affected eye twice daily
3+ years
Dual actionReference brand · US Zaditor
Ketotifen
0.025% ophthalmic solution
1 drop in the affected eye(s) every 8–12 hours
Over 3 years · geriatric review
The red eye
Pain, photophobia, reduced vision or a unilateral red eye needs assessment. Avoid contact lenses while the eye is red. Clinical reference ↗