BusinessDr Rosemary Leonard answers: Are antihistamines dangerous if you drive? 5 months ago01 mins ‘Older antihistamines can often cause drowsiness, but side effects vary enormously from person to person.’ ‘Older antihistamines can often cause drowsiness, but side effects vary enormously from person to person.’ Post navigation Previous: Shoppers have made this simple change to their dental routine for ‘brighter’ teethNext: OPINION – Toxic ‘beach body ready’ discourse is coming back — but we can do so much better Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.