Every six months I get a call from a pharmacist at my medical insurance company. The pharmacist job is to go over my drugs and advise me on changes I should make.

One of the very first thing they did was tell me that I have to stop taking the calcium I was taking and start taking calcium citrate because it works much better and also doesn’t have conflict with other drugs.

Walgreens has calcium citrate and if you buy two bottles, the second one is half off. Costco has it with magnesium and they are the best deal anywhere.