Gluten free. Bonus size 33% more. Compare to the active ingredient in Zyrtec (This product is not manufactured or distributed by McNeil Consumer Healthcare, Division of McNeil-PPC Inc., distributor of Zyrtec). 24 hr. Original prescription strength. Cetirizine hydrochloride tablets, 10mg antihistamine. Indoor & Outdoor 24 Hour Relief of: sneezing; runny nose; itchy, watery eyes; itchy throat or nose. Our pharmacists recommend. Quality guaranteed or your money back. Questions or comments? 1-800-719-9260. Other information: Store between 20-25 degrees C (68-77 degrees F). Do not use if printed foil under cap is broken or missing.