*400 mg max from supplement ideally

Examples: (for 200 mg Ca)

• Ca CO3 (500 mg) → 1st line, cheapest
• Ca Citrate (1000 mg) → for low stomach acid
• Ca Gluconate (2000 mg)

Conditions:

• OP - Osteoporosis, Hypocalcemia ↓ Ca (< 2.2)
• Ca CO3 treat Hyper-phosphatemia ↑PO4
• IV Calcium treat !Hyperkalemia - ↑K (> 5)

CI: N/A

Side effects:

• GI Side Effects, e.g. Constipation

Interactions:

• Drugs that decrease Ca absorption
  • PPI (”-prazole”)
    • Salt need high stomach acid to dissociate and be absorbed
  • Iron Supplement
• Drugs whose absorption get decreased by Ca
  • Anti-Microbial
    • Tetracyclines
    • Fluoroquinolone
  • L-thyroxine

Admin:

• PO, 1 hr before or 4 hr after other medication