Galpharm Treathay Hayfever Relief – Fexofenadine 120mg Tablets – 3 x 30. ???? About Galpharm Treathay Fexofenadine 120mg. Fexofenadine is anon-drowsy antihistamine used for the relief of hayfever and seasonal allergy symptoms, including sneezing, runny nose, itchy eyes, and throat irritation.