I recently put a bunch of time into looking up nutrient levels of different minerals for this year. It had been a few years since I had looked at every thing and wanted to make sure I wasnt missing out on a new and better product out there. What I found was that Antler King, Frigid Forage, and Monster Raxx are pretty much at the top tier of minerals IMO. I have previously done alot of research on antler growth, development, and nutrients utilized by deer. To sum it up, antler growth is very dependent upon Calcium, Phosphorous, and Protein. Obviously there are other minerals that help but these are what I found to be of most importance and have hinged my mineral supplements around for years. Personally I can vouch for both Antler King and Frigid Forage working very well. I just started a new site this weekend with Monster Raxx and am excited to see how it works out. I also like to add a food block to my mineral sites for added protein supplement and will again say I am pleased and impressed by Antler King and Frigid Forage products. I believe Monster Raxx is a site sponsor?? Im guessing he will chime in and be of great knowledge as well as others. Hope this helps