Dr. Johanna Budwig says a week is plenty of time and make sure you're getting 1/2 hour of sunlight after eating these Life Saving remedies. How to fight Cancer and Win by William L. Fischer, ISBN 0915421186/1994 is a book you need to get also. Check your library first before you buy or www.applepublishing.com. I'm taking the same, Flax + cottage cheese since recovering from Laryngeal Cancer, after Radiation and Chemo. I don't plan on it returning. Understand though, everyone is different so your results maybe quicker and better than others but one things for sure, "Don't Stop" and remember,"Seven days without Prayer can make one Weak." Cheers,Ray