A therapist that checks your medications, catches what others miss, and builds a picture of your health that grows with every conversation.
WHAT WITNESS DOES
Cross-references your medications, supplements, and compounds against 18 million medical records in real time. Flags dangerous interactions before they happen.
Detects drug names in your messages automatically. Checks contraindications, cumulative risk across 7 axes, and suggests safer alternatives.
Five-level crisis assessment runs on every message. Connects you to local resources when it matters, stays quiet when it doesn't.
Four clinical models working behind every conversation: cognitive bandwidth, behavioral defaults, needs architecture, and vulnerability cascades.
Remembers everything you share across sessions. Surfaces connections you can't see yourself — between mood, sleep, diet, medications, and life events.
Every insight, every pattern, every session builds a picture that belongs to you. Nothing is sold. Nothing is shared.
18 million medical records.
Four therapeutic frameworks.
One conversation at a time.
Free to try. No credit card required.