May be absorbed systemically. Remove contact lenses before instillation of eye drops; reinsert after 15 min. If >1 topical ophth medicinal product is being used, administer at least 5 min apart. Contains benzalkonium Cl, Na dihydrogen phosphate monohydrate, disodium phosphate anhydrous. Minor influence on the ability to drive & use machines. Do not use during pregnancy & in breastfeeding women. Safety & effectiveness in childn & adolescents have not been established. Timolol: Caution in patients w/ CV diseases; 1st degree heart block; severe peripheral circulatory disturbance/disorders (ie, severe forms of Raynaud's disease or Raynaud's syndrome); asthma, mild/moderate COPD; patients subject to spontaneous hypoglycaemia or w/ labile diabetes; history of atopy or of severe anaphylactic reaction. May mask signs & symptoms of acute hypoglycaemia & signs of hyperthyroidism. May induce eye dryness. Reports of choroidal detachment w/ administration of aq suppressant therapy (eg, timolol, acetazolamide) after filtration procedures. Closely observe response of patients concomitantly receiving other systemic β-blocking agent. Use of 2 topical β-blockers is not recommended. β-blocking ophth prep may block systemic β-agonist effects eg, of adrenaline. Latanoprost: Risk of gradual change in eye colour, predominantly seen in patients w/ mixed coloured irides. Unilateral treatment can result in permanent heterochromia. Reports of eyelid skin darkening. May gradually change eyelashes & vellus hair in the treated eye. Caution in inflammatory, neovascular or chronic angle closure glaucoma, in open angle glaucoma of pseudophakic patients & in pigmentary glaucoma; in acute attacks of closed angle glaucoma; patients w/ history of herpetic keratitis. Avoid in cases of active herpes simplex keratitis & in patients w/ history of recurrent herpetic keratitis specifically associated w/ prostaglandin analogues. Reports of macular oedema mainly in aphakic patients, in pseudophakic patients w/ torn posterior lens cap, or in patients w/ known risk factors for macular oedema. Not recommended w/ ≥2 prostaglandins, prostaglandin analogues or prostaglandin derivatives.