Table 3.
HPLC-determined strength of out-of-date batches of albuterol inhalers relative to in-date inhaler strength (0.09 mg/unit).
| Product | Exp. Date | Manufacturer | Lot# | Relative Strength (% of Dose) |
|---|---|---|---|---|
| Ventolin® | June 2009 | GSK | 8ZP8118 | 117.5% |
| Proventil® | February 2012 | Schering-Plough | 100443 | 89.2% |
| Proventil® | December 2012 | Schering-Plough | 110293 | 83.6% |
| Proventil® | May 2015 | Schering-Plough | 130401 | 94.9% |
| Ventolin® | December 2017 | GSK | 7L8E | 111.8% |
| Ventolin®∗ | January 2021 | GSK | 8W9R | 100% |
∗
In-date at time of analysis.