Table 3.
Ginseng formulations
| Manufacturer | Species | Plant part | Preparation | Standardization | Stated amount of marker (mg) | Measured amount marker (mg) (average of two lots) | Percent of label claim | Suggested servings per day | Total daily dose of marker compound (mg) |
|---|---|---|---|---|---|---|---|---|---|
| a | Panax ginseng | Root | Powder | 12 mg ginsenosides | 12 | 5.3 ± 0.2 | 44 ± 2% | 2 | 10.6 |
| b (lot 1)* | Panax ginseng | Root | N/A | N/A | 8.0 | 9.0 ± 1.5 | 112 ± 19% | 4 | 36.0 |
| b (lot 2)* | Panax ginseng | Root | Softgel | 7% ginsenosides | 10.0 | 17.5 ± 0.13 | 175 ± 1% | 2 | 35.0 |
| c | N/A | N/A | N/A | N/A | 7.0 | 18.2 ± 0.4 | 261 ± 6% | 1–4 | 18.2–72.8 |
| d | Panax ginseng | Root | Extract | 7% (7 mg) ginsenosides | 7.0 | 7.4 ± 0.6 | 106 ± 8% | 3 | 22.2 |
| f | Panax ginseng | Root | Extract | 5% ginsenosides | ≥5.0 | 7.3 ± 1.0 | — | 2 | 14.6 |
| g | Panax ginseng | Root | Extract | 7% (7 mg) ginsenosides | 7.0 | 8.2 ± 0.3 | 117 ± 4% | 3 | 24.6 |
| h | N/A | N/A | N/A | N/A | 7.0 | 8.0 ± 0.5 | 114 ± 6% | 2 | 16.0 |
| i | N/A | N/A | N/A | N/A | – | 11.1 ± 1.4 | — | 2 | 22.2 |
*Reported as two separate products since lots were different preparations;
N/A = information not available.