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This service is for informational purposes only and does not constitute medical advice. Always consult a healthcare professional before starting any supplement regimen.

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Find Out What Actually Works
For Your Body.

Track your supplements, check in daily on how you feel, and let AI analyze your patterns. StackLog turns self-experimentation into actionable insights.

Sound familiar?

Too many supplements, no clue what works

You've tried magnesium, ashwagandha, and fish oil — but can't tell which one actually helps.

Forgot whether you took it today

Your routine breaks down because there's no easy way to track what you've taken.

No way to measure the effect

Your daily check-in takes 30 seconds

Tap what you took. Rate how you feel. That's it.

Today's Check-in

Feb 27

Supplements

How do you feel?

😴Sleep
🎯Focus
⚡Energy
😌Anxiety
Save Check-in

Three steps to data-driven stacking

1

Try

Build a stack from 500+ supplements or start with a popular template.

2

Check in

Log daily intake and rate sleep, focus, energy, and anxiety with simple dot ratings.

3

Ask AI

Get pattern analysis and personalized insights based on your logged data.

What AI tells you

How has my sleep been since I started magnesium?
Over the past 14 days since adding magnesium glycinate, your sleep rating averaged 4.1/5 — up from 2.8/5 in the prior two weeks. The most notable change appeared around day 4–5.
Is ashwagandha doing anything for my anxiety?
For Engineers

AI-Powered Supplement Management

StackLog is the world's first supplement tracker with MCP (Model Context Protocol) support. Manage your stacks, log supplements, and get personalized insights — all through your favorite AI assistant.

Add to your AI assistant's MCP config:
{
  "mcpServers": {
    "stacklog": {
      "command": "npx",
      "args": ["-y", "@anthropic/stacklog-mcp"],
      "env": {
        "STACKLOG_API_TOKEN": "your-token-here"
      }
    }
  }
}

AI Supplement Logging

Log supplements and rate effects through natural conversation with your AI assistant.

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Your body is the lab.

Start logging today and let data guide your decisions. No guesswork, just patterns.

You feel 'kind of better' but have zero data to back it up.

Comparing your 30-day anxiety ratings: before ashwagandha (avg 3.8/5) vs. after (avg 2.4/5). Your lowest-anxiety days correlate with consistent morning intake plus L-theanine.

Smart Recommendations

Get personalized supplement suggestions based on your history, effects, and goals.

MCP Integration

Connect to Claude, ChatGPT, and other AI assistants via the open MCP standard.

Start Your Experiment
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