Yep. 1/2 and 1/2. I'm one for following directions so as not to get in trouble. Especially when it comes to my body. I just finished 18 days and I've had about 16 oz of juice/water mixture. It is 100% pure squeezed from Whole Foods (Odwalla) brand...is there another juice I can try? I know the OJ helps to restart the digestive system.