You can take multivitamins with NOVOS Core and/or NOVOS Boost.
In fact, we developed NOVOS products specifically to be combined with multivitamins without issue.
Regarding the best vitamins, minerals and other micronutrients to take with NOVOS products, we wrote an article about this topic here:
https://novoslabs.com/best-food-supplements-to-take-even-when-you-eat-healthy/