PeakD4Y

Educational harm reduction reference. Research-backed pharmacokinetic data, drug interaction warnings, and safety information. Not medical advice.

SUBST4NCE is an educational harm reduction reference app providing research-backed pharmacokinetic data and drug interaction warnings.

IMPORTANT DISCLAIMER This app is NOT a medical device and does NOT provide medical advice. It is a visualization and reference tool for educational purposes only. Always consult healthcare professionals for medical decisions.

WHAT'S INSIDE

Comprehensive Substance Database • 80+ substances across multiple categories • Published pharmacokinetic data (half-lives, metabolism pathways) • Mechanism of action explanations • Data quality indicators showing research confidence levels

Interaction Checker • Check combinations of multiple substances • Understand potential interaction mechanisms • Color-coded risk levels based on published research • Plain-language explanations of why interactions matter

Visual Timeline • See pharmacokinetic curves for substances • Understand onset, peak, and duration patterns • Multi-substance overlay visualization • Body load indicators

Personal Context (Optional) • Add your biological factors for educational context • Weight, metabolism, and health considerations • Tolerance tracking • Current medications reference

Research Citations • Every data point linked to published sources • PubMed IDs and DOIs for verification • FDA and WHO reference data • "Limited data" warnings for research chemicals

CATEGORIES COVERED • Alcohol & Cannabinoids • Stimulants & Depressants • Psychedelics & Dissociatives • Prescription medications • Research chemicals (with appropriate warnings) • And more...

SAFETY FEATURES • Emergency resources always accessible • SAMHSA helpline integration • Non-judgmental, educational framing • Privacy-first: all data stored locally on your device

DESIGNED FOR • Harm reduction education • Healthcare students and professionals • Researchers and educators • Anyone seeking evidence-based substance information

This app does NOT: • Provide dosing recommendations • Calculate "safe" times to drive • Facilitate procurement • Replace professional medical advice

All information is compiled from peer-reviewed research and official sources. Users accept full responsibility for how they use this educational reference.

18+ only. By using this app, you acknowledge the terms and conditions presented at first launch.

Questions or feedback? Contact us through the support link.