FDA pharmacologic class
Vitamin D3 Analog
3 medicines are in FDA's class of vitamin d3 analogs: calcitriol (Vectical), paricalcitol (Zemplar) and calcifediol (Rayaldee). 2 of the 3 are listed from generic labelers (FDA NDC Directory, October 8, 2026). The lowest pharmacy cost is calcitriol 0.25 mcg capsule at $0.153 per capsule (NADAC).
Which medicines are vitamin d3 analog?
| Medicine | Brand names | Generic labelers (all forms) | Pharmacy cost | Boxed warning | Shortage | Recalls since 2012 |
|---|---|---|---|---|---|---|
| Calcitriol | Vectical | 20 labelers | $0.153 per capsule 0.25 mcg capsule | No | A presentation being discontinued | 2 |
| Paricalcitol | Zemplar | 8 labelers | $1.28 per capsule 1 mcg capsule | No | A presentation being discontinued | 10 |
| Calcifediol | Rayaldee | none listed | $41.26 per capsule 30 mcg capsule (hard) | No | No current entry | 0 |
Source: FDA Established Pharmacologic Class (NDC Directory, openFDA); CMS NADAC of October 7, 2026; FDA shortages and recalls (FDA files October 8, 2026)
What do pharmacies pay?
Each medicine's most widely listed form, per unit, in the NADAC survey: what pharmacies paid, not what a patient pays; strengths differ, so compare like with like.
Source: CMS National Average Drug Acquisition Cost (NADAC) survey, October 7, 2026: what retail pharmacies paid per unit; not a counter price