The Examine.com of the whole body.

The answer to “what can I take for this?” is scattered across products that never talk to each other. Beautiful anatomy apps show you the body but say nothing about remedies. Rigorous supplement databases grade the evidence but have no sense of where in the body anything matters. Interaction checkers that include herbs sit behind clinical paywalls.

Materia joins them.

Explore a layered human body, click any part, and follow it down to the conditions that affect it and the herbs, supplements, chemicals, and drugs that have been studied for them — each graded by the strength of the research, linked to the studies, and checked for interactions. It’s a connected reference: body → condition → remedy → active compound → mechanism → study, traversable from any direction.

Our promises

• Ad-free. No banner ads, no pop-ups, no sponsored placements.
• We sell nothing. No supplement store, no affiliate links.
• Every claim is graded and cited. If we can’t cite it, we don’t publish it.
• Honest about uncertainty. “Insufficient evidence” is a valid, common answer.

Materia is educational and not a substitute for professional care. See our methodology for how we grade evidence, and our disclaimer before you act on anything here.