Drug | Excedrin® PM Headache caplets (BN: 46172679) (Each caplet labelled to contain 250 mg PAR, 250 mg ASP & 38 mg DIPH as citrate salt) | Standard Addition Technique | ||
---|---|---|---|---|
%Found ± SDa | Claimed (μg/mL) | Pure added (μg/mL) | %Recovery of the pure addedb | |
PAR | 100.55 ± 1.320 | 10 | 5.0 | 101.08 |
10.0 | 100.64 | |||
20.0 | 99.84 | |||
Mean ± SD | 100.52 ± 0.631 | |||
ASP | 100.47 ± 1.507 | 10 | 5.0 | 98.76 |
10.0 | 98.6 | |||
20.0 | 99.99 | |||
Mean ± SD | 99.12 ± 0.760 | |||
DIPH | 100.16 ± 1.225 | 1.5 | 1.0 | 98.25 |
1.5 | 100.58 | |||
3.0 | 100.00 | |||
Mean ± SD | 99.61 ± 1.217 |