Does the ProLon® 5-day kit contain gluten or lactose? 21 February 2023 07:53 Updated The products contained in the kit are gluten-free and lactose-free. Related articles Is the ProLon® 5-day kit vegan? Can I do ProLon® 5-day if during menstrual cycle? Do I lose weight? How many times can I repeat ProLon® 5-day? Are the soups dried?