The use of sedating antihistamines by allergy sufferers remains common, and
physicians continue to prescribe these older anti-histamines with great fr
equency. Precautionary statements Warning of possible drowsiness and the ne
ed for caution when driving or operating machinery, which are required for
sedating antihistamines, don't appear to be having much impact. Sedating an
tihistamines are frequently found to be a causal factor in fatal traffic ac
cidents and are the leading medication found on autopsy of pilots who have
crashed their aircraft. Patients taking sedating antihistamines frequently
don't feel sleepy, yet they have difficulty staying awake and their brain f
unctioning is impaired. The impact on safety is found in the increased risk
of traumatic work-related injuries, driving accidents, and aviation fatali
ties. The cognitive and psychomotor deficits translate into losses in worke
r productivity and student learning.