They do not become dangerous! We recommend discussing any dietary changes, including the introduction of NutriBlasts, with your Dr. if you are taking these prescription medications. When consuming more fruits and vegetables, favorable outcomes such as reduced cholesterol, lower blood pressure, and improved sleep, among others, have been recorded. In this case, medication dosages would need to be adjusted. In addition, some foods may interact with certain medications (most notably grapefruit and citrus fruits) which might increase the potency of the drug and cause negative side effects.