Brand Reference: Pepcid
| Metric | Verified Benchmark | Source |
|---|---|---|
| Famotidine (Prescription 40 mg) RxNorm Concept ID | 4278 | U.S. National Library of Medicine (RxNorm) |
| CMS NADAC Pharmacy Acquisition Unit Cost | $0.0360 / unit | CMS Medicaid NADAC Weekly Feed |
| Walk-In Chain Pharmacy Cash Average | $24.00 / mo | CMS NADAC + U.S. Retail Markup Index |
| Mark Cuban Cost Plus Wholesale Price | $5.00 / mo | Cost Plus Drugs Wholesale Feed |
| Community Mean Out-of-Pocket Paid | $5.90 / mo | 27 Zero-PHI Verified Patient Logs |
Reversibly blocks basolateral H2 receptors on gastric parietal cells to suppress nocturnal and vagally stimulated cAMP-dependent acid secretion without PPI-induced irreversible proton-pump achlorhydria, magnesium malabsorption, or CYP2C19 inhibition.
CMS National Average Drug Acquisition Cost (NADAC) tracking places Famotidine (Prescription 40 mg) (Pepcid, RxCUI 4278) at $0.0360 per unit, whereas walk-in chain pharmacies bill cash patients an average of $24.00 monthly—creating a 79% ($19.00/mo) wholesale arbitrage spread down to $5.00.
Systemic exposure to Famotidine (Prescription 40 mg) reflects 40%–45% oral absorption kinetics and 30% hepatic s-oxidation; 70% unchanged renal tubular excretion, sustaining receptor engagement across a 2.5–3.5 hours half-life window (45–60 minutes acid suppression lasting 10–12 hours response profile).
Dosing protocols (20 mg PO BID or 40 mg PO QHS) balance efficacy (88.80% patient satisfaction across 27 logs) against tachyphylaxis after >8 weeks continuous (14% of reports), constipation (6% of reports), headache (5% of reports), with strict avoidance in unadjusted crcl < 50 ml/min (cns confusion risk in elderly renal failure).
Across 27 verified cash-pay logs, Famotidine (Prescription 40 mg) achieves a 88.80% Worth-It rating with out-of-pocket spend averaging $5.90/mo versus $24.00/mo walk-in retail.
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Switched to Cost Plus Drugs at 20 mg PO BID for Famotidine (Prescription 40 mg); monthly out-of-pocket dropped to $4.50 compared with $24.00 retail.
Completed 10 weeks on Famotidine (Prescription 40 mg) (40 mg PO QHS). Zero notable side effects on steady dosing.
Consistent biomarker response on 20 mg PO BID Famotidine (Prescription 40 mg) sourced via TeleMed ($5.80/mo cash pay without insurance prior authorization).