Overlap detection
The same nutrient arriving from four products is one of the most common and least visible problems in a stack. StackingRight totals every source and shows you where the duplication comes from.
Evidence-based · 91+ interaction rulesStop guessing.
Stop guessing.
Start stacking right.
Enter your supplements, diet and medications. StackingRight finds the overlaps, the clashes and the perfect time to take each one. Clinical-grade logic, consumer-grade UX.
- Nutrients
- 31
- Sourced rules
- 91
- Deep guides
- 12
74Example Stack Score
Severe · 3 flagged
Calcium and iron compete for the same intestinal transporter. Separate calcium and iron by at least 2 hours.
Source: NIH Office of Dietary Supplements
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Add your stack. See the conflicts. Get a schedule.
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Pick 2-8 items to see conflicts and a schedule.
91Stack Score
Optimized
Your stack is well spaced with no significant conflicts.
- Critical conflicts-8.3
- Moderate conflicts-4.0
What it does
Five things no supplement label tells you.
Interaction engine
Every unordered pair in your stack is matched against sourced rules across nutrients, medications and foods. Each result carries a severity, a mechanism and the spacing it needs.
Timing optimizer
Each item gets a window and a with-or-without-food instruction, then spacing warnings fire wherever your arrangement violates a required interval.
Stack Score
One number from 0 to 100, with an itemised breakdown so you know which change recovers the most points.
Cited sources
Every rule links to an NIH fact sheet or a named study. If we cannot cite it, it does not ship.
Why trust it
Credibility is the product.
Every rule in StackingRight traces back to the NIH Office of Dietary Supplements or a specific indexed study. We publish the mechanism, the severity, the required spacing and the source on every single result.
Read the methodology“I had been taking calcium and iron together for two years. Two hours apart and my ferritin finally moved.”
“The thyroid timing protocol alone was worth it. My TSH stopped swinging every six months.”
“Four of my supplements contained magnesium. I had no idea I was at double the upper limit.”
“I send the report to my patients before their appointment. It saves ten minutes of history-taking.”
Pricing
Free to check. Paid to keep.
The scan is free forever. Plus and Pro exist for people who log daily and need the full picture.
Free
For a one-off answer about your stack.
$0/ month
- Unlimited stack scans
- Interaction checker with cited rules
- Up to 5 supplements tracked
- Full nutrient and guide library
- Timing planner
Plus
Most popularFor a daily habit you actually keep.
$7/ month, billed yearly
- Everything in Free
- Unlimited stack items
- Full interaction list with severity and mechanism
- Daily 30-second check-in
- Adherence streak and schedule export
- Overlap and duplicate detection
Pro
For labs, clinicians and complex regimens.
$15/ month, billed yearly
- Everything in Plus
- Clinician-ready PDF report
- Correlation insights between adherence and symptoms
- Lab value tracking
- Priority email support
Checkout is not connected yet — the tiers are wired into the app so you can switch them on when you are ready.
Questions
Straight answers.
Still unsure? The methodology page explains exactly how every rule is sourced and how the score is computed.
Your stack is probably working against itself.
It takes two minutes to find out. No account, no email.