English version in progress: interface and data are in English; some explanatory text is still in Chinese.
DHA (docosahexaenoic acid)
EPA 和 DHA 被装进细胞膜；DHA 在视网膜和大脑中特别多，EPA 是一类信号分子的原料。
Full ranking Dose tool Products (1,049)
Key facts
Daily Value (US FDA)—
Tolerable Upper Intake Level (UL)— Authoritative daily maximum: 1,000 mg
Median（Per day）170 mgP5 25 – P95 600
Products1,049
Sources: https://doi.org/10.2903/j.efsa.2012.2815 · EFSA 2012: DHA alone up to ~1 g/day no safety concern
How it works：鱼油里的 EPA、DHA 去了哪里？
- 鱼油的主要活性成分是长链 omega-3 脂肪酸 EPA 和 DHA；标签上"鱼油总量"不等于 EPA+DHA 的量。
- 它们和其他脂肪一样在小肠吸收，与餐同服吸收更好。
- EPA 和 DHA 被整合进全身细胞膜的磷脂。
- DHA 在视网膜、大脑和精子中浓度特别高。
- EPA 等可生成类二十烷酸，这类信号分子参与炎症、血管等调节。
Schematic only; positions and scale are not anatomical.
Limits and cautions：FDA 认为每天来自补剂的 EPA+DHA 不超过 5 g 是安全的；可能与抗凝药相互作用。
Sources：NIH ODS: Omega3FattyAcids Fact Sheet for Health Professionals
Daily dose across products（mg/day）
Authoritative daily maximum 1,000
22 mglog scale · n=1,0491,500 mg
Label data from official national databases and brand websites, as declared; not lab-verified.
Top ranked
| Rank | Brand | Product | Per day | Score |
|---|---|---|---|---|
| 1 | Nordic Naturals | DHA From Purified Fish Oil | 450 mg | 90.0 |
| 2 | Abbott | DHA/Lutein Softgel | 200 mg | 88.0 |
| 2 | Abbott | DHA/Lutein/Vitamin E Softgel | 200 mg | 88.0 |
| 4 | Thorne | Advanced DHA 650 mg | 650 mg | 85.0 |
| 4 | Allergy Research Group | DHA Fish Oil Concentrate | 810 mg | 85.0 |
For information only; not medical advice. Talk to a doctor or pharmacist before starting or stopping any supplement.