Immediate hypersensitivity reactions may occur after administration. Mouthpiece must never be used w/ any other metered aerosol; Berodual N must never be used w/ any other mouthpiece other than the one supplied. Container is under pressure; do not open by force or expose to temp >50°C. Discontinue immediately if paradoxical bronchospasm occurs. Patients predisposed to narrow-angle glaucoma; avoid contact w/ eyes. Carefully assess risk/benefit when higher doses are used in insufficiently controlled DM, recent MI, severe organic heart or vascular disorders, hyperthyroidism, phaeochromocytoma, pre-existing urinary outflow tract obstruction (eg, prostatic hyperplasia or bladder-neck obstruction). Patients w/ underlying severe heart disease (eg, ischaemic heart disease, arrhythmia or severe heart failure). Potentially serious hypokalaemia. Patients w/ cystic fibrosis may be prone to GI motility disturbances. Advise patients to immediately consult physician in case of acute rapidly worsening dyspnoea. Prolonged use. Concomitant use w/ other sympathomimetic bronchodilators. May lead to +ve doping test results. Contains ethanol 13 mg in each actuation (equiv to <1 mL beer/wine). May experience undesirable effects (eg, dizziness, tremor, accommodation disorder, mydriasis & blurred vision) during treatment; may affect ability to drive & use machines. Pregnancy (especially 1st trimester) & lactation. Should only be used in childn upon medical advice & under adult supervision.