Increased IOP, especially narrow-angle glaucoma; severe CV diseases (eg, CHD, HTN); pheochromocytoma; metabolic disorders (eg, hyperthyroidism, DM); porphyria; prostatic hypertrophy. Risk of nasal mucosa atrophy in chronic cold sufferers. Patients treated w/ MAOIs or w/ other potentially BP-increasing drugs. Avoid prolonged use & overdosing. Pregnancy & lactation.