RenAvast™ is a new nutritional supplement to help support natural kidney functions in cats and dogs. RenAvast™ is 100% safe with no reported side effects. RenAvast™ is a combination of naturally occurring amino acids and peptides. Cats and dogs have seen improvement within weeks of starting RenAvast™. Reported improvements include but are not limited to coat improvement, increased appetite, decreased vomiting, weight gain and a general all over sense of feeling better.