Can I use ProLon if I have a history of kidney stones?

You should discuss this question with your healthcare provider, who may advise against using ProLon, or who may have specific recommendations for you during ProLon use regarding fluid intake and medication adjustments. Note that the quantities of food in ProLon are low overall, but some of the components do contain oxalate, which can be a concern for people with certain kinds of kidney stones. Additionally, one of the known potential risks of fasting is dehydration, which can increase risk of stones in individuals who are predisposed.