Calcium [Mass/Vol]
Calcium isn’t just for bones — it also regulates nerve signals, muscle contraction, heart rhythm, and hormone release. Blood calcium is tightly controlled, so small shifts can flag deeper issues with vitamin D, parathyroid function, magnesium, or kidney health. Most of your calcium is stored in bone — blood calcium reflects your body's moment-to-moment regulation.solve real problems with clean design and honest materials.
$3.31 USD