<<Disclaimer: Verify this information before applying it to your situation.>> Hi Folks - First I like to thank 32 who responsed to the question regarding a good g/f calcium tablet. Don't know where we would all be without so many internet friends; I will list the most popular brands in order; 1 - Citracal - some w/Vit D - 10 2 - Nature's Made 500mg +D - 5 3 - Viactiv 500mg - 3 4 - GNC Calcium Complete - 2 5 - Caltrate + Vit D - 2 6 - Twin Lab Brand - Trio-Boron Plus - 2 7 - GNC Calcimate 800 mg - 2 8 - KAL Brand - Wright Nutrients - 1 9 - Cosco Kirkland Brand - 1 10 - GNC Bluebonnet Brand - 1 11 - Natural Wealth - Oyster Calcium - 1 12 - Walgreens - 1 13 - Freeda Vitamins - 1 Spring Valley Calcium 600mg - sold at Wal-Mart stores. I contacted them at www.leiner.com - and received the following comments. Thank you for contacting Leiner Health Product concerning Spring Valley Calcium 600mg tablets. Leiner manufactures and packages a variety of Spring Valley products for Wal-Mart. All of the Calcium products that we supply are gluten-free. Matt Wolfe Consumer Relations Leiner Health Products 1-800-342-6562 hanks Again, Don Lay, NE FLA. [log in to unmask]