Gut
Something I ate?
It happens after the morning dose, but you keep telling yourself it's the coffee.
It's Day 10. And you slept a total of 4 hours.
You know something is wrong.
What you don't know is why.
Astra Sentinel helps you journal how you feel and quietly surfaces patterns from thousands of anonymous entries — so you can ask better questions, sooner.
Free. No account needed to start searching.
Are you a clinician? See Astra for clinics →
You're not imagining it
Most of us never connect the dots until it's too late.
Mind
I can't think straight
Brain fog crept in slowly. You blamed work — but the timing lines up with a new med.
Skin
Where did this rash come from?
A faint itch, then redness on your forearm. Maybe the new soap — or maybe not.
Heart
Why is my heart racing?
Quiet evening on the couch, and your chest is pounding. It's the third time this week.
Mood
I just feel… off
Nothing's wrong, exactly. But the weight didn't show up until you started the new prescription.
Energy
Why am I so tired?
Eight hours of sleep and still drained by noon. The afternoon dose lines up too well.
Why this matters
Astra helps you and your clinician catch the underlying cause — before a small side effect becomes a serious one.
1 in 3
ER visits in adults 65+ involve a medication or interaction
~7 days
is how quickly the first patterns appear once you start journaling
100% anonymous
by design — your name and words never leave your account
How it works
Three small habits, one clearer picture.
Step 01
Journal
Two minutes a day. Mood, sleep, food, medications, anything off. We keep it private.
Step 02
Match
We compare your patterns to thousands of anonymous journals — never names, never free text.
Step 03
Warn
If your combination of medications is known to clash, we flag it before you wonder why.
Start your story
Two ways people use it
A ritual, and a safety net.
1 — A daily ritual
Track how you feel, what you ate, what you took. After a few weeks, the noise becomes a story.
2 — A pattern matcher
When something feels off, search a symptom. See — anonymously — what others on your medications have lived through.
Your entries are yours.
When your data helps someone else, they only ever see the shape of it — a symptom tag, a medication name, an age bracket. Never your name. Never your words.
For patients
Start tracking how you feel.
Two minutes a day. The first patterns appear within a week. Free, forever, for journaling.
Create your journalFor clinics & physicians
See how Astra helps your patients.
A deterministic DDI engine with mechanisms, lab modifiers, and an audit trail. Onboard your first three patients in under five minutes.
Explore Astra for clinics