Kinda works, kinda
Exogenous/external ketones.  These come in all forms these days.  MCT is the most popular but those bottles do get messy.  Here is a pill capsule.  Does it help manage cravings?  Yes, a bit.  Will you burn more fat for energy, yah, maybe.  But generally, if you want to loose weight taking these is not enough.  You have to up your exercise and try to reduce your caloric intake. This latter challenge is harder.  Caffeinated 'diet' pills can help but tend to get one hyper.  Now leptin, in the form of Tonalin CLA (taken with a meal), does seem to help more with the hunger.  For me, increasing exercise and taking ketones and leptin can make an effort.  But my most impactful weight loss in the past 2-3 years was going on a strict KETO diet.  Avoiding carbs, replacing rice with scrambled eggs, etc.
Rating: 4 stars