At a minimum, you will need to purchase a non-dairy/non-whey protein powder (at least 36 servings’ worth – or more if you’re a man / if you anticipate needing additional shakes) and a water-soluble fiber blend (30-36 servings’ worth). For a deeper cleanse, Dr. Sara also recommends taking detox supplements (enough for 30 days).
Here is a list of ingredients to try and find something comparable in your area: http://hormonereset.com/ingredient-list/