Whatever cleansing products you use, I consider it essential to use colonics and/or cleansing enemas on a daily basis for the duration of the fast.
Believe me, you will look forward to that daily enema as you remove the toxins your body has released during the past 24 hours. A properly administered enema is both refreshing as well as relaxing.
If possible, I would also suggest a visit to a certified colon hydrotherapist before starting your fast and get her advice on how colon cleansing can enhance the effectiveness of your fast.