This is Day 13 for me and I have been using the same bottled organic lemon juice you are too. The bottle says Santa Cruz and people confuse it with the popular brand of lemon juice found in the primarily dark green and yellow-capped bottle. The organic lemon juice is PURE lemon juice. There are no additives or preservatives . So far everything has been going well as far as the Master-Cleanse is concerned. To me the only difference is that the freshly squeezed tastes much better than the bottled. As a treat to myself, I am reserving the freshly squeezed lemon juice until the last seven days of my fast so that I can be motivated to finish my 21 days! Good luck and keep going...