@saylor1750, From what little I've read I don't think they help much for weight loss. A Keto diet would be much more effective for weight loss. Here's a couple of versions of the same article that talks about the pills.

Summary - The Ketogenic Diet in a Pill: Is this Possible?: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2692867/
The publisher's final edited version of this article: https://onlinelibrary.wiley.com/doi/10.1111/j.1528-1167.2008.01857.x

If you are interested in a good weight loss discussion, you might find the following discussion in the LCHF Living & Intermittent Fasting group helpful --- Low-carb healthy fat living. Intermittent fasting. What’s your why?: https://connect.mayoclinic.org/discussion/low-carb-healthy-fat-living-intermittent-fasting-whats-your-why/

Are you trying to lose weight or looking for something to help lose weight?