Seldane
terfenadine
A non-sedating antihistamine used for allergies and viral upper respiratory tract infections. It is available in Canada, the UK, and in some other countries by prescription, but was withdrawn from US market due to cardiotoxicity.Adverse effects
Arrhythmias (e.g., torsades de pointes, which may be due to delayed repolarisation with marked QT prolongation) and bizarre T-wave changes.