The one I found was about $20 cheaper for a month supply..New Chapter Tiny Tabs, a similar combo to AlgaeCalPlus, plus a small amount of strontium—organic, plant-based, 3rd party tested.. I discovered it on the ConsumerLab site, which seems pretty reliable. It can be purchased on Amazon…. But, each person needs to make sure they have the best supplement for themselves. There are many quite inexpensive ways to get the basics of calcium and D3.. doing the research helps you choose.