Lesson learned-

Never run out of materials. Always keep an opened bottle around or at least buy some when you open the last bottle! If you don't use it and never opened it, the stores will take it back!

I've been there too. I'm currently on day 14 (11 days MC, 3 days juice fasting) and as we speak, I'm planning my trip to the grocery store (quite a production because I go way out to get organic veggies in bulk at great prices) because I'm lo on juicin' supplies. If I run out, I'll be tempted to break sooner than hoped for.