What is the verdict on low/zero sugar monk/stevia drinks like Owyn, Iconic, and Super Coffee?

​ Are these safe? Any downsides? ​ Owyn Monk fruit 230 calories 7g Fiber 35g Protein 7g Total carbs [https://liveowyn.com/](https://liveowyn.com/) ​ Iconic Protein Monk fruit 230 calories 7g Fiber 20g Protein 8g Total carbs [https://www.drinkiconic.com/](https://www.drinkiconic.com/) ​ Super Coffee Monk Fruit & Stevia 200mg Caffeine 80 calories 2g Fiber 10g Protein 4g Total carbs [https://drinksupercoffee.com/](https://drinksupercoffee.com/)