Is the ProLon® 5-day kit vegan? 21 February 2023 07:54 Updated No. The ProLon® 5-day kit contains honey as ingredient of the L-Bars. Related articles Are the soups dried? How many times can I repeat ProLon® 5-day? Can I do ProLon® 5-day if during menstrual cycle? Can I consume the foods contained in the ProLon® 5-day kit every other day? Can I play sports or do physical activity during ProLon® 5-day?