English version in progress: interface and data are in English; some explanatory text is still in Chinese.
Iodine
甲状腺把碘"装"进甲状腺激素；这些激素调节全身的代谢。
Full ranking Dose tool Products (2,957)
Key facts
Daily Value (US FDA)150 mcg
Tolerable Upper Intake Level (UL)1,100 mcg
Median（Per day）150 mcgP5 15 – P95 5,000
Products2,957
Sources: https://ods.od.nih.gov/factsheets/Iodine-HealthProfessional/ · FDA DV 150 mcg (https://www.fda.gov/food/nutrition-facts-label/daily-value-nutrition-and-supplement-facts-labels); pre-2016 DV [] (https://www.federalregister.gov/documents/2016/05/27/2016-11867/food-labeling-revision-of-the-nutrition-and-supplement-facts-labels); adult UL 1100 mcg; hard_high=50000 per serving (UL x10 or market maximum), hard_low=DV/1000
How it works：碘为什么和甲状腺有关？
- 碘被吸收后，甲状腺从血液中摄取碘；垂体分泌的 TSH 调节这一过程。
- 甲状腺用碘合成甲状腺激素 T4 和 T3。
- 甲状腺激素调节蛋白质合成、酶活性和代谢率，对胎儿和婴儿的骨骼与大脑发育很重要。
Schematic only; positions and scale are not anatomical.
Limits and cautions：成人 UL 为 1,100 mcg/天；摄入过多或过少都可能引起甲状腺问题。
Daily dose across products（mcg/day）
DV 150
UL 1,100
6 mcglog scale · n=2,95712,500 mcg
Label data from official national databases and brand websites, as declared; not lab-verified.
Common forms
| Form | Products | Median | P5–P95 | Elemental fraction |
|---|---|---|---|---|
| Iodine potassium iodide | 1929 | 150 mcg | 21 – 1,911 | 76.4% [source] |
| Iodine kelp | 403 | 150 mcg | 13 – 380 | — |
Top ranked
| Rank | Brand | Product | Per day | Score |
|---|---|---|---|---|
| 1 | Bulletproof | Iodine 150 mcg | 300 mcg | 90.0 |
| 1 | Solaray | Iodine 500 mcg | 500 mcg | 90.0 |
| 1 | NutraChamps | Iodine Liquid Drops Unflavored | 250 mcg | 90.0 |
| 4 | Whole Foods Market | Iodine from Kelp | 225 mcg | 88.0 |
| 5 | Pure Encapsulations | Iodine (Potassium Iodide) | 450 mcg | 85.0 |
For information only; not medical advice. Talk to a doctor or pharmacist before starting or stopping any supplement.