The NHS advises people in the UK who are taking a common antihistamine to avoid certain drinks, as per the latest guidance on its website. According to the health service, some fruit juices can interfere with the medicine and reduce its effectiveness. The alert affects anyone who has been prescribed fexofenadine, which is often known by the brand names Allevia, Almerg, Histallay, Telfast, and Treathay. Fexofenadine is an antihistamine which blocks the effects of histamine and reduces