Brand Reference: Drisdol
| Metric | Verified Benchmark | Source |
|---|---|---|
| Ergocalciferol / High-Dose Prescription Calciferol 50,000 IU RxNorm Concept ID | 4018 | U.S. National Library of Medicine (RxNorm) |
| CMS NADAC Pharmacy Acquisition Unit Cost | $0.1400 / unit | CMS Medicaid NADAC Weekly Feed |
| Walk-In Chain Pharmacy Cash Average | $22.00 / mo | CMS NADAC + U.S. Retail Markup Index |
| Mark Cuban Cost Plus Wholesale Price | $4.90 / mo | Cost Plus Drugs Wholesale Feed |
| Community Mean Out-of-Pocket Paid | $5.50 / mo | 33 Zero-PHI Verified Patient Logs |
Sequential hepatic CYP2R1 25-hydroxylation and renal/macrophage CYP27B1 1-alpha-hydroxylation generate hormonal calcitriol, activating nuclear VDR-RXR heterodimers across >900 genes governing duodenal TRPV6 calcium absorption, innate cathelicidin immunity, and parathyroid suppression.
For self-pay patients filling Ergocalciferol / High-Dose Prescription Calciferol 50,000 IU (NDC 00378-1155-01), direct wholesale and telehealth fulfillment drops monthly spend from $22.00 retail to $4.90 (78% savings against a $0.1400 CMS pharmacy acquisition baseline).
Clinical clearance of Ergocalciferol / High-Dose Prescription Calciferol 50,000 IU (Secosteroid Nuclear Vitamin D Receptor (VDR) Prohormone Repletion) relies on hepatic 25-hydroxylation and cyp24a1 24-hydroxylase catabolism via bile with a 19–25 days circulating 25(OH)D / 2 months adipose depot half-life; patients absorbing at 75%–80% micellar absorption with lipid meal bioavailability typically observe target onset around 8 weeks loading to move 25(oh)d from <20 to >45 ng/ml.
FDA clinical labeling for Ergocalciferol / High-Dose Prescription Calciferol 50,000 IU restricts administration in hypercalcemia (> 10.5 mg/dl); granulomatous sarcoidosis (unregulated macrophage 1-alpha-hydroxylase); vitamin d toxicity across 50,000 IU (1.25 mg) PO once weekly x 8 weeks with fatty meal, then maintenance, with self-reported patient tracking dominated by hypercalcemia only if overdosed chronically >100 ng/ml (2% of reports).
Across 33 verified cash-pay logs, Ergocalciferol / High-Dose Prescription Calciferol 50,000 IU achieves a 91.50% Worth-It rating with out-of-pocket spend averaging $5.50/mo versus $22.00/mo walk-in retail.
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Switched to Cost Plus Drugs at 50,000 IU (1.25 mg) PO once weekly x 8 weeks with fatty meal, then maintenance for Ergocalciferol / High-Dose Prescription Calciferol 50,000 IU; monthly out-of-pocket dropped to $4.50 compared with $22.00 retail.
Completed 10 weeks on Ergocalciferol / High-Dose Prescription Calciferol 50,000 IU (50,000 IU (1.25 mg) PO once weekly x 8 weeks with fatty meal, then maintenance). Zero notable side effects on steady dosing.
Consistent biomarker response on 50,000 IU (1.25 mg) PO once weekly x 8 weeks with fatty meal, then maintenance Ergocalciferol / High-Dose Prescription Calciferol 50,000 IU sourced via Cost Plus Drugs ($5.68/mo cash pay without insurance prior authorization).