Learn how we calculate risk scores, identify potential side effects, and how to get the most out of DoseDeck
Take the Interactive TutorialDoseDeck is a harm reduction and educational platform designed to help you understand how substances interact with each other. We analyze combinations of medications, supplements, and substances to provide easy-to-understand risk assessments - helping you make safer, more informed decisions.
Follow these simple steps to check your substances for potential interactions:
Go to the Deck Builder and start typing the name of any medication, supplement, or substance. Our search includes:
Tip: You can search by brand name (Tylenol) or generic name (Acetaminophen) - we'll find it either way!
Add all the substances you want to check. Your "deck" is your personal combination - add everything you're currently taking or considering taking together.
Once you have 2+ substances in your deck, we automatically analyze them and show you:
Have questions about your results? AI Jay is your personal substance safety assistant. Click the purple chat icon to:
Pro Tip: Set up your health profile (age, conditions, allergies) for more personalized guidance from AI Jay!
Create a free account to save your decks and access them from any device:
Your risk score (0-100) represents the overall safety concern for your combination. Here's what each level means:
Generally safe combination. Minor interactions possible but typically not concerning for most people.
Worth being careful. Pay attention to timing, dosing, and watch for the listed side effects.
Significant interactions present. Consider consulting a healthcare provider before combining.
Dangerous combination. Professional medical guidance strongly recommended.
Life-threatening combination. Avoid this combination entirely or seek immediate medical attention.
Our risk scoring system analyzes multiple factors from trusted medical sources to give you a comprehensive safety assessment:
We check if substances directly interact with each other - like when one drug affects how your body processes another, or when they compete for the same receptors.
When multiple substances have similar effects (like both causing drowsiness or both raising heart rate), those effects can stack and become more intense.
Not all interactions are equally serious. We weight interactions based on their documented clinical significance - from minor inconveniences to life-threatening reactions.
We detect dangerous syndromes like serotonin syndrome (MAOIs + SSRIs, including linezolid), QT prolongation with electrolyte depletion, CNS depression stacking, and efficacy loss from enzyme inducers.
We assess which body systems are affected - liver, kidneys, heart, brain - and flag when multiple substances stress the same organs.
How quickly interactions occur matters. Some happen immediately, others build over time. We factor in onset timing and how long effects last.
We pull from trusted sources including FDA drug databases, NIH research, peer-reviewed medical literature, and established clinical guidelines. Our system cross-references multiple sources to provide the most comprehensive assessment possible.
Note: While we strive for accuracy, no database can capture every possible interaction. Always consult healthcare professionals for important medical decisions.
Our algorithm includes specialized detection for life-threatening clinical syndromes:
Validated against comprehensive clinical test suites covering known dangerous combinations.
When you view your deck results, we show you side effects to watch for. Here's how we identify them:
Each substance has its own common side effects. We list these from FDA-approved labeling and clinical studies.
When multiple substances share the same side effect (like drowsiness), we highlight these as they're likely to be more pronounced.
Some effects only occur when specific substances are combined. These unique interaction effects are flagged separately.
We organize side effects by how serious they are, so you know which ones need immediate attention vs. which are just annoying.
AI Jay is your personal substance safety assistant, available to DoseDeck+ subscribers. Ask questions in plain English and get clear, helpful answers about your specific combination.
Important: AI Jay provides educational information, not medical advice. While it's trained to be helpful and accurate, AI can make mistakes. Always verify important information with healthcare professionals.
For important legal disclaimers, terms of service, privacy information, and data source attributions, please visit our Legal page.
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