Pruritus &/or urticaria upon discontinuation. Blurred vision, confusion & dysuria. Patients w/ predisposition factors of urinary retention eg, spinal cord lesion, prostatic hyperplasia; epilepsy & risk of convulsions. Perform 3-day wash-out period before allergy skin tests. Concomitant use w/ alcohol, CNS depressants eg, benzodiazepines & antidepressants. May affect ability to drive & use machines. Liver & renal disease. Not to be used during 1st trimester of pregnancy & lactation. Not to be used in childn <2 yr. Not recommended to use FC tab in childn <6 yr.