The Lemonade Detox Diet requires fresh lemon juice and not store-bought or juice from concentrate. Use only organic lemons to make your own juice for the cleanse.
You can find organic lemons at quality supermarkets or at your green grocer. Consider buying a quality juicer or an attachment for your KitchenAid mixer, if you have one. Depending upon the size of the lemon, you can get 1/4 cup of juice from a good lemon.