If you are taking oral antihistamines regularly, you can overlap with Super Spray for 1-2 weeks as you adjust to Super Spray and taper down to avoid withdrawal symptoms by taking ½ tablet for 7-10 days, then ¼ tablet for a 7-10 days. If you find you do need the extra effects of an oral antihistamine on high allergen exposure days, we recommend fexofenadine (Allegra) or levocetirizine (Xyzal) over all the others.
Learn more about oral antihistamines in this article.