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Effect of piperine on the serum β-carotene levels during a 14-day supplementation in human volunteers [20].
| Treatment (n = 6) | β-carotene (μg/dL) | AUC (μg/dL) × (time in days) | ||
|---|---|---|---|---|
| Day 0 | Day 14 | Change | ||
| β-carotene + placebo | 16.3 ± 2.6 | 47.2 ± 6.4 | 30.9 ± 5.4 | 272 ± 47.6 |
| β-carotene + piperine | 16.0 ± 3.1 | 65.8 ± 9.7 | 49.8 ± 9.6 | 435 ± 74.2 |
