We recommend you stop most non-prescription supplements and vitamins during your Reboot and load up on nutrients from fruits and veggies. However, you may continue to take vitamin D as very few of us get enough. And on a Reboot longer than 15 days, we recommend adding protein to your juice, and taking Zinc and B12 may promote healthier hair and nails. If you have questions, please ask your doctor. Read more about supplements and your Reboot.