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The asthma prevention effect of alkaloids and flavones in nandina leaf extract.
| Symptom class | Negative control | Guinea pig model of asthma | Positive control | Alkaloids (mg/kg) | Flavones (mg/kg) | ||
|---|---|---|---|---|---|---|---|
| 10 | 5 | 10 | 5 | ||||
| I | 6 | 0 | 5 | 5 | 4 | 1 | 1 |
| II | 0 | 2 | 1 | 1 | 2 | 3 | 1 |
| III | 0 | 3 | 0 | 0 | 0 | 2 | 4 |
| IV | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
