Andrew Lessman calcium

Just search Andrew Lessman calcium on HSN or ProCaps and your options will come up.If you call Andrew’s customer service at ProCaps they can give you excellent advice. They also have a live chat on their site I think
Hope this helps

He has a calcium-magnesium duo that I like. Note: 1. Take with vit D and K2 (for absorption, etc). 2. I think only about 500-600mg of calcium can be absorbed at a time; so if you truly need 2,000mg/day please divide your doses!!!!!! Stones, plaques, etc.-o my! 3. Look up the most absorbable forms of calcium, and look for supplements with that form.
Following an osteopenia diagnosis myself, I found that starting low dose with the best quality supplement, then gradually increasing dose until bone density increases were seen on scan was more effective than going to the drug store and buying some cheap stuff that didn’t work in my body (expensive ). Also, it is fantastic for your bones to do weight-bering activities. This “pressure” puts a signal on your bones to keep them strong (this is a very simplified statement-if your interested in the physiology get a good book about bone remodeling and osteoclast, osteoblast, etc. activity). Bing or google it too.