Benzalkonium chloride may be absorbed by soft contact lenses and may change the colour of the contact lenses. You should remove contact lenses before using this medicine and put them back 15 minutes afterwards (see section 4.3).
If you are being treated for high blood pressure, depression, heart disease, arteriosclerosis, diabetes or increased thyroid activity consult your doctor before using the drops as naphazoline may exacerbate vasoconstriction. For the same reason this product should not be used as a long term ocular irrigant.
Discard any eye drops remaining 28 days after opening the container.
Continued use of this product may increase redness of the eye.
Use of naphazoline in the eye may liberate pigment granules from the iris, especially when given in high doses to elderly patients.
Benzalkonium chloride has been reported to cause eye irritation, symptoms of dry eyes and may affect the tear film and corneal surface. Should be used with caution in dry eye patients and in patients where the cornea may be compromised. Patients should be monitored in case of prolonged use.
If you experience eye pain, changes in vision or continued redness of the eye, or if the condition worsens or persists for more than 24 hours consult a doctor.
If the solution changes colour or becomes cloudy do not use.