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SW-User
calcium
SW-User
@SW-User I was always told that calcium slows down the absorption of most nutrients. I'm no expert, but when I use to take bodybuilding supplements, such as ZMA ( a zinc/magnesium/B6 ) recovery supplement, it said to steer clear of calcium until after the ZMA had a chance to absorb. Don't know about B12, but it's probably the same with that as well.