Keto BHB Shark Tank also include important nutrients like potassium, magnesium, and calcium — but they’re in much smaller amounts than you’d get in actual produce. And since the keto diet limits fruits and vegetables, you will undoubtedly need to take a multivitamin to get enough minerals, calcium, and vitamin D. That's the biggest concern I have about recommending keto in general. Dietary supplements aren’t overseen by the FDA, meaning that they’re not evaluated for safety and efficacy in the same way that food and medications are and you may not be getting exactly what you pay for. And if you are? Consuming certain nutrients in supplement versus food form can induce oxidative stress rather than treat it, causing more harm than good to organ tissues.