This is one of Dr. Christopher’s most famous formulas. It has been used historically for hormone imbalance problems. This formula is popular among those experiencing hormone imbalance of any kind (menopause, PMS, etc.). It is safe and time tested for both females and males. This formula was marketed heavily via Nature’s Way, and known as “Change-O-Life”. This formula is a Dr. John R. Christopher original and the 20 year old contract that Dr. Christopher’s original Formulas and Nature’s Way had ended May 1998. All encapsulated products are in a pure 100% vegetable based capsule.