Examples:

• Chloecalciferol, Ergocalciferol (Pro-drugs, Vitamin D3) → OTC
• Alfacalcidol (25-OH Vitamin D) → Prescription
• Calcitriol (1,25 VD) (1, 25-OH Vitamin D → Active form) → Prescription

Conditions:

• OP - Osteoporosis
• CKD-MBD
• Hypocalcemia ↓ Ca (< 2.2)
• MS - Multiple Sclerosis

CI:

• !Hypercalcemia - ↑Ca (> 2.5)

Side effects: N/A unless risk factor for hypercalcemia