Every answer Guard Doctor gives is backed by information from official, peer-reviewed medical databases. No random internet content. No hallucinations. Only cited, verified sources.
Every database was selected for its authority, coverage, and use in real clinical practice. Together they cover diseases, drugs, lab tests, guidelines, and rare conditions.
The WHO's ICD-11 is the global standard for medical classification, used by healthcare providers in 194 countries. It covers every recognised disease, condition, symptom, and external cause — the most comprehensive disease taxonomy in existence.
The EMA regulates medicines in the European Union, ensuring they meet the highest standards for safety, efficacy, and quality. Our database integrates approved drug monographs including indications, contraindications, side effects, and drug interactions for the EU market.
NICE produces evidence-based guidelines for the NHS, setting the gold standard for clinical practice in the United Kingdom. These guidelines are developed by multi-disciplinary panels and are based on systematic reviews of the best available evidence.
Orphanet is the world's largest reference database for rare diseases and orphan drugs, a critical resource for patients with conditions that affect fewer than 5 in 10,000 people. Developed and maintained by the European Commission, it covers over 6,000 rare diseases.
RxNorm provides normalised names and unique identifiers for all clinical drugs used in the United States and internationally. Maintained by the US National Library of Medicine, it is the definitive standard for drug naming, linking brand names, generic names, ingredients, and dosage forms into a single queryable resource.
DailyMed provides the most current drug labelling submitted to the FDA, including package inserts for prescription and over-the-counter drugs. It is the authoritative source for dosage instructions, contraindications, adverse reactions, drug interactions, and boxed warnings for medications approved in the United States.
LOINC is the universal standard for identifying medical laboratory tests, clinical measurements, and observations. With 85,008 codes covering everything from blood tests and urinalysis to ECG findings and vital signs, LOINC enables Guard Doctor to answer questions about lab results, biomarker reference ranges, specimen types, and measurement units — used by healthcare systems in over 165 countries.
Our RAG (Retrieval-Augmented Generation) pipeline ensures every answer is grounded in real data — not invented by an AI.
Fill in a structured questionnaire — location, duration, intensity. Your health profile is automatically included for context.
OpenAI text-embedding-3-small converts your description into a 1,536-dimension semantic vector representation.
We search 140,126+ pre-indexed medical entries using cosine similarity — retrieving the most relevant results from all 7 sources.
Claude Sonnet synthesises a response using only the retrieved sources. Every claim is tied to a real citation from our verified databases.
We don't just link to websites — we index, chunk, embed, and verify every entry.
Every source is a recognised medical institution — WHO, EMA/OpenFDA, NICE, Orphanet, RxNorm NIH, DailyMed FDA, or LOINC. No blogs, no forums, no third-party interpretations. Only primary medical databases.
Our knowledge base is periodically re-indexed as sources update their data. Medical guidelines evolve — we make sure our AI stays current with the latest clinical evidence.
Unlike general AI, Guard Doctor always shows you where the information came from. You can verify any claim against the original source — full transparency on every response.
Our RAG architecture means the AI can only answer from retrieved documents. If no relevant information is found in our databases, it says so — rather than inventing an answer.
Our sources are specifically aligned with European clinical practice and UK NHS standards. Dosing, guidelines, and drug approvals are relevant to patients in the EU and UK.
Your symptom queries are processed securely and never used to train AI models. UK GDPR compliant. We never sell, share, or expose your health data to third parties.
Start a free 7-day trial — no credit card required. See how our verified medical data delivers answers you can actually trust.
