Vitamin D3 plus a moderate iodine dose. Iodine status is meaningfully variable across the US population; this stack covers two common deficiencies in one capsule.
What it is
Life Extension Vitamin D3 + Sea Iodine is a category-leading product in the vitamins space. Editorially-selected for vitamin-d, iodine use cases. The label declares third-party testing where applicable.
Suggested use
Follow label dosing. As with any supplement, talk to a clinician before starting if you take prescription medications or have a chronic condition.
A note on selection
We list products that have a real track record (years of use, real users, published research where available) and avoid the wellness-aisle proprietary blends that hide doses behind 'patented formula' language.