English version in progress: interface and data are in English; some explanatory text is still in Chinese.
Turmeric / curcumin
姜黄素吸收差、代谢快，血液中很难达到高浓度；胡椒碱能减缓它的代谢。
Full ranking Dose tool Products (1,258)
Key facts
Daily Value (US FDA)—
Tolerable Upper Intake Level (UL)— Authoritative daily maximum: 9,000 mg
Median（Per day）150 mgP5 10 – P95 1,000
Products1,258
Sources: https://webprod.hc-sc.gc.ca/nhpid-bdipsn/atReq?atid=turmeric.oral.curcuma.orale& · Health Canada NNHPD monograph: not to exceed 9 g dried rhizome (or crude equivalent)/day
How it works：为什么姜黄素产品常加黑胡椒提取物？
- 口服姜黄素吸收很少。
- 吸收的部分在肠道和肝脏被快速代谢（葡萄糖醛酸化）并排出。
- 胡椒碱抑制这一代谢途径，人体研究中使血液姜黄素浓度明显升高。
Schematic only; positions and scale are not anatomical.
Limits and cautions：美国 NCCIH 指出，姜黄对任何健康状况的作用都缺乏有力证据；有个案报告与肝损伤相关。
Sources：NCCIH: Turmeric；Shoba G. et al., Planta Med 1998: piperine and curcumin bioavailability
Daily dose across products（mg/day）
Authoritative daily maximum 9,000
1.2 mglog scale · n=1,2583,000 mg
Label data from official national databases and brand websites, as declared; not lab-verified.
Top ranked
| Rank | Brand | Product | Per day | Score |
|---|---|---|---|---|
| 1 | Trader Joe's | Turmeric | 500 mg | 90.0 |
| 1 | Irwin Naturals | Turmeric After-Sport With Magnesium | 200 mg | 90.0 |
| 1 | Spring Valley | Turmeric Curcumin Complex | 1,000 mg | 90.0 |
| 1 | MegaFood | Turmeric Strength For Joint | 800 mg | 90.0 |
| 1 | MegaFood | Turmeric Strength For Liver | 800 mg | 90.0 |
For information only; not medical advice. Talk to a doctor or pharmacist before starting or stopping any supplement.