The short version
10 companies supply this market — deep enough that no single failure threatens the supply.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
Sildenafil Citrate · SILDENAFIL CITRATE 20 mg/1 · Tablet · Oral · Asclemed USA, Inc.
NDC 76420-0613-30 · 30 TABLET in 1 BOTTLE · ANDA · View full market →
10 companies supply this market — deep enough that no single failure threatens the supply.
The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.
No Medicare Part D plan in CMS's quarterly files lists this product. That usually means it is discontinued, a repackager's listing, or a product no plan has added to its formulary.
How Part D pricing works →No NADAC pricing on file for this NDC — NADAC covers drugs dispensed by retail community pharmacies.
Not scored — fragility is computed for NADAC-priced NDCs.
sole-source market
For scale: the typical drug’s chance is about 0.1% — this one is in ordinary territory.
Backtested statistical model over the whole market, not this package alone. Model details →
Establishments this product's FDA label declares, located via FDA registration data. How we built this →
No FDA shortage reports for this drug or its presentations.
No enforcement reports list this package NDC.
| Labeler | Strength | First seen | Last seen |
|---|---|---|---|
| Proficient Rx LP | SILDENAFIL CITRATE 50 mg/1 | Jul 15, 2026 | Sep 3, 2026 |
| A-S Medication Solutions | SILDENAFIL CITRATE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| A-S Medication Solutions | SILDENAFIL CITRATE 20 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Advanced Rx of Tennessee, LLC | SILDENAFIL CITRATE 100 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Advanced Rx Pharmacy of Tennessee, LLC | SILDENAFIL CITRATE 20 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| ANI Pharmaceuticals, Inc. | SILDENAFIL CITRATE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| ANI Pharmaceuticals, Inc. | SILDENAFIL CITRATE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| ANI Pharmaceuticals, Inc. | SILDENAFIL CITRATE 100 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Asclemed USA, Inc. | SILDENAFIL CITRATE 20 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Nivagen Pharmaceuticals, Inc. | SILDENAFIL CITRATE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Nivagen Pharmaceuticals, Inc. | SILDENAFIL CITRATE 100 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Nivagen Pharmaceuticals, Inc. | SILDENAFIL CITRATE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Northstar Rx LLC | SILDENAFIL CITRATE 100 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Northstar Rx LLC | SILDENAFIL CITRATE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Northstar Rx LLC | SILDENAFIL CITRATE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| PD-Rx Pharmaceuticals, Inc. | SILDENAFIL CITRATE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| PD-Rx Pharmaceuticals, Inc. | SILDENAFIL CITRATE 100 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| PD-Rx Pharmaceuticals, Inc. | SILDENAFIL CITRATE 50 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Preferred Pharmaceuticals Inc. | SILDENAFIL CITRATE 100 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Proficient Rx LP | SILDENAFIL CITRATE 100 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
| Proficient Rx LP | SILDENAFIL CITRATE 25 mg/1 | Jul 15, 2026 | Sep 2, 2026 |
Roster from daily NDC Directory diffs — first/last seen dates start July 2026.
DrugDashboards, "Sildenafil Citrate — NDC 76420-0613-30," retrieved September 3, 2026, https://drugdashboards.com/drug/76420061330.
Free to cite with attribution — see how the data is put together.