Heidi Evidence helps clinicians find and verify clinical answers quickly. Ask a clinical question and get an answer grounded in trusted sources, with citations you can open to review the original material.
When to use Evidence
Use Evidence when you need a fast, citation-backed starting point, including:
Pre-clinic prep (refresh guidelines, criteria, dosing)
In-the-moment sense-checking (confirm what a guideline says, and open it)
Post-session reflection or learning
Teaching and supervision
Reviewing areas where evidence is nuanced or evolving
Evidence isn't only for looking up guidelines. Clinicians also use it to edit an existing note, draft new documentation (referrals, patient history summaries, forms, medical certificates, back-to-work certificates, patient explainers), and export that documentation to Word or PDF. Some of these extend what you already knew as Ask Heidi.
How to access Evidence
You can access Evidence in two ways:
1. Evidence (outside sessions)
Evidence is available from the Heidi sidebar and works independently of patient sessions.
Log in to Heidi
Click Evidence in the sidebar
Enter your question
Review the answer and open citations to verify details
🎥 Out-of-session demo:
2. Evidence in Ask Heidi (during a consult)
For regions outside of the UK and the EU, Evidence in Ask Heidi is available in the Ask Heidi bar and can be used throughout the consult.
On Clinician, Practice, and Enterprise, Evidence in Ask Heidi usage is unlimited.
On Free, Evidence in Ask Heidi usage is limited (you will see prompts in-product when you reach the limit).
If you are using Heidi within the UK or EU, Evidence will not be available during a session.
🎥 In-session demo:
Evidence knows your session
This is the biggest difference between using Evidence during a visit versus outside one: during a visit, Evidence already has the clinical context, so you don't have to retype it.
It reads the note. Details already in your note (age, gender, comorbidities, current medications, allergies) are considered automatically when Evidence generates an answer. You don't need to repeat them in your question.
It can see recent history. If the session is linked to a patient, Evidence can draw on that patient's previous 3 visits.
You can add your own context. In contextual notes, attach files for Evidence to draw on: test and investigation results, correspondence from other clinicians, forms to complete, or a specific guideline.
Shortcuts and suggestions. Type
/to reach shortcut prompts such as Prep for pre-charting. Suggested, note-specific questions also appear above the input box so you can start with one tap.
Getting to know Evidence
Evidence helps you find clinical answers fast, grounded in trusted sources with citations you can open and check. Here's how to get the most out of it.
Ask better questions
The more context you give, the better your answer. Specify the population and setting (adult, paediatric, pregnancy, ED) and the decision you're trying to make (imaging threshold, dosing, follow-up). If the first answer is close but not quite right, ask a follow-up to refine it.
You don't need to write a full sentence. Evidence works well with point-form questions, so both of these are fine:
evidence for starting anticoagulation post cardioversion
anticoagulation post cardioversion
More worked examples:
What are the RCH guidelines for paediatric asthma management?
Colonoscopy screening guidelines for a 50-year-old with a family history of colorectal cancer
When should I order a head CT after a recent head injury?
Does ramipril dosing need adjustment in renal impairment?
Most effective biologic for plaque psoriasis based on current evidence
📸 OPTIONAL — example prompts: the interesting_evidence_prompts.pdf from the thread (F0B30HGPR0C) is a good source for a richer example set if you want to attach or adapt it.
Understand your answers
Every answer is designed to be checkable. Key clinical statements are paired with citations so you can verify the source and open the original material.
A few things worth knowing about where the answer draws from:
The search bar shows what was retrieved, not what was used. Just after you submit a question, the search bar lists the sources Evidence retrieved. Evidence then filters those to the most relevant, highest-quality material. The sources you see in the citations are a curated subset of what was retrieved, so focus on the citations rather than the raw search list.
The References section is the full list. For a complete list of every source actually used in an answer, look at the References section at the end.
Hover to read the exact excerpt. Hovering over a citation now shows a generous preview, including the specific section of the source used to generate that part of the answer, so you can often read what you need without opening the full document.
A note on paywalls. Some cited pages sit behind a paywall, but Evidence only cites from the text that's publicly accessible on that page (for example, the summary and opening sections that paywalled journals make available). To read a full paywalled article you'll still need to log in with your own access. The exception is partner sources, covered under Take control of your sources below.
Evidence aims to prioritise sources aligned to your region. If local guidance isn't available, it may surface broader international sources.
Where answers come from
Evidence searches across curated clinical sources such as guidelines, medicine references and published research. Source availability can vary by region, plan and licensing.
As a baseline, Heidi aims to support each territory with guidelines, primary research and medicines references (drug monographs and formularies). Examples include clinical guidelines and care pathways, territory-specific drug databases, biomedical literature databases, open-access journals, systematic reviews and research aggregators.
Clinical calculators and scoring tools
Evidence can run common calculations and scoring tools (for example, CHA₂DS₂-VASc). Scores are produced by a dedicated calculator built to compute them reliably, and the logic is shown where available so you can check the output.
Take control of your sources
Source Control lets you shape the evidence base used in responses: choose which source types are included, build a Library of your own documents and protocols, and (for teams) standardise sources across an organisation. Premium Source Control features are available on paid Evidence plans.
🎥 Source Control:
The source types
Open the Sources button to choose what Evidence draws on:
Clinical web — curated clinical summaries, drug references and health-authority content.
Literature and guidelines — peer-reviewed journals, systematic reviews and clinical practice guidelines. (Previously "guidelines-focused" and "primary evidence" could be picked separately; they're now combined into this one option.)
My library — your own document collections and protocols (see below).
Partner sources — premium content from publishers whose pages normally sit behind a paywall. Currently includes HealthPathways (AU, NZ), BMJ Best Practice (AU, CA, UK) and Vidal (DE, FR, ES), with more being added.
My Library
Use My Library to add your own documents and protocols so Evidence can draw on them. Group documents into collections (for example, a "Cardiology" collection) and select the collections you want included for a given search.
Choosing sources doesn't mean blocking domains
You shape results by selecting the sources and collections you want, not by blocking or blacklisting domains. There's no exclude-a-domain feature.
For teams: managed sources
If you're on a team, your admin can set and lock sources for everyone, so the whole practice searches a consistent evidence base. When a source is managed for you, you'll see a note such as "Some sources are managed by your team admin", and locked options appear greyed out. Team admins can also set the default region for evidence searches.
📸 NEW SCREENSHOT NEEDED: the member-facing enforced view — a locked source with the "managed by your team admin" banner, and/or the "Set by [team]" badge on the region setting.
⚠️ VERIFY (SET-216): This is the customer-facing summary of team Source Control. The full detail lives in the internal "Team Source Control" admin guide (staff-only — do not copy verbatim). Confirm how much team/admin detail you want in the public article versus keeping it in a separate admin-facing doc. A dedicated "Sources" video covering all four types (not just My Library) was also flagged as a gap.
Heidi Evidence across platforms
Evidence is available on:
Web app
Desktop app
iOS app (limited feature set)
Android
iOS app notes
Update required: users must be on iOS app v2.5.0 (or later).
Managed / Enterprise: Evidence may not appear for Enterprise or team customers. Reach out to your team admin for more details on timing.
Where to find it: it appears as an Evidence tab in the bottom navigation (not the desktop sidebar).
Current iOS limitations (vs web/desktop)
No Evidence in Ask Heidi / in-session usage on iOS yet.
Library / Source Control filtering is not available on iOS yet.
No attachments in Evidence.
CPD is not available to view on iOS.
Common features
Availability can vary by plan
Inline citations and source links — Key clinical statements are linked to citations so you can open and verify the original material.
Follow-up questions — Suggested prompts help you refine, narrow, or extend your question without starting over.
Considerations — Context-aware considerations can surface related clinical evidence during the patient visit.
Evidence history — Your previous questions and answers are saved so you can revisit and continue research over time.
Copy and export — Copy content for your own notes, or export outputs when you need to share or save them.
Patient-friendly summaries and handouts — Turn clinical information into clearer language that can support patient understanding.
Library — Where available, use the Library to manage documents and source preferences for your practice or organisation.
Clinical calculators and scoring tools — Run common calculations and scoring tools, with logic shown where available so you can verify outputs.
CPD/CME tracking — Track eligible usage for professional development requirements.
If you are missing some feature it may be restricted by your data region, or your team has not enabled it yet. Reach out to support if you are having issues.
Share your feedback:
We’d love to hear your feedback on Heidi Evidence:
Use 👍 when answers are helpful and relevant
Use 👎 if the answer isn’t quite right — this helps us improve
Get in touch to speak to our team on what you loved or would like to see improved via our support team