6 Pack Keto ACV Gummies are designed to cover a general caloric deficit. Keeping in mind that losing weight is still healthy and balanced, the goal is to combine this with cardio to strengthen the cardiovascular system and resistance training to maintain muscle mass. Since Metamucil provides so many nutritional benefits, nature has to admit that it could be great as a weight gain supplement. Sure, it's probably no worse than some pills and some shit. But to find out if Metamucil just works as a weight gainer, you first need to look at its primary purpose.