Clinician tools
Free interactive reference tools for the questions that come up at the desk and in a chart review. Every tool is a lookup against the same sources our written guides use: FDA prescribing information via DailyMed, published clinical guidelines, and peer-reviewed literature. Every result cites its source and includes the currency date.
Nothing here is medical advice. Every tool sits on the reference side of the line, not the recommendation side. Every clinical decision belongs with the licensed clinician who knows the patient.
Interactions and dosing
Look-ups you'd otherwise do in three places at once.
- Multi-drug lookup CYP450 interaction checker Add two or more medications. Cross-checks substrate, inhibitor, and inducer status at 2D6, 3A4, 1A2, 2C19, 2C9, and 2B6 using the same data as our clinician CYP450 guide.
- Multi-drug lookup Serotonin syndrome risk checker Add medications. Flags MAOI combinations, tramadol pairs, and stacked serotonergic drugs.
- Multi-drug lookup QT prolongation multi-drug checker CredibleMeds-based combined QT risk profile for common psychiatric and antibiotic combinations.
- Cumulative burden lookup Anticholinergic burden calculator ACB Scale total across a regimen. Total 3+ is clinically meaningful; higher is worse for cognition and falls.
- Equivalence lookup Antipsychotic CPZ calculator Enter a dose. Get chlorpromazine-equivalent doses across typicals and atypicals, plus WHO defined daily dose reference.
- Equivalence lookup Benzodiazepine equivalents calculator Enter a dose. Get diazepam-equivalent doses, half-life, and onset for common benzodiazepines.
- Timeline lookup Half-life discontinuation window Enter last dose date. Get expected 5-half-life clearance window and discontinuation-syndrome risk framing.
Monitoring schedules and references
Printable, date-stamped schedules and level references the patient can take home.
- Schedule generator Metabolic monitoring schedule Enter start date for an atypical antipsychotic. Get the ADA/APA schedule: baseline, weeks 4, 8, 12, then quarterly.
- Schedule generator Clozapine ANC monitoring tracker Enter start date. Get weekly for six months, every two weeks for months 6 to 12, then monthly indefinitely, per label.
- Reference lookup Lithium level target reference Target levels by indication, toxicity thresholds, monitoring cadence, and drugs that shift levels.
- Reference lookup Beers Criteria checker Psychiatric medications flagged by the 2023 AGS Beers Criteria for older adults.
Taper and switching planners
The moves where slower and clearer beats faster and clever.
- Schedule generator Taper planner Pick a drug and a taper cadence. Get a week-by-week dose-reduction schedule based on published taper frameworks.
- Decision guide Antidepressant switching planner Pick a From drug and a To drug. Returns method (direct, cross-taper, wash-and-switch) and a day-by-day schedule with washout rules.
How every tool is built
Same rules on every one. Data pulled from a published source (FDA label, NICE or APA guideline, ISBD or AAPP consensus, Flockhart table, Ashton Manual, CPIC guideline, Cochrane review, or peer-reviewed literature). Extracted verbatim into a data file that's auditable. Cross-referenced with the corresponding written clinician guide on this site. Cited on the result.
Every tool is a look-up interface for content that's already published on this site. Nothing personalizes to a patient. Nothing recommends a treatment. That's the frame the courts have historically protected for electronic reference publishers, and it's the frame we hold to.
About this tool
Psychiatric prescribing sits at an intersection of pharmacokinetics, receptor pharmacology, monitoring guidelines, and taper protocols that are scattered across dozens of primary sources. These tools consolidate the lookups clinicians actually make at the point of prescribing: does drug A interact with drug B, what dose of drug A is equivalent to drug B, when do I need to draw the next lab, and how do I structure a taper or a switch.
Every tool is free, requires no account, and runs entirely in the browser. No patient information is sent anywhere. Every result cites its source and shows the currency date. Every tool has a Print action button for handouts, a Copy Link action for sharing a specific configuration, and an Embed action for embedding in intranet pages or teaching materials.
The framing is reference lookup, not personalized recommendation. This is the same frame that has historically protected electronic reference publishers (PDR, DailyMed, UpToDate, Epocrates): providing published data in a lookup interface is not the practice of medicine. This tool set is aimed at clinicians who already know how to prescribe and need faster access to the reference data underlying their decisions.
Coverage: interactions and dosing (CYP450 checker for 2D6, 3A4, 1A2, 2C19, 2C9, 2B6; chlorpromazine equivalents for antipsychotics; diazepam equivalents for benzodiazepines; half-life clearance window for antidepressants, antipsychotics, mood stabilizers, benzos, stimulants), monitoring schedules (ADA/APA metabolic monitoring for atypical antipsychotics; FDA-label clozapine ANC schedule with BEN accommodation and cardiac monitoring flags), and taper and switching planners (Ashton for benzos, Horowitz-Taylor for SSRIs, ISBD for lithium; direct switch, cross-taper, and MAOI washout logic for antidepressants).
Common questions
- Are these psychiatry tools free?
Yes, all eight clinician tools on PsychiatryRx are free. No account is required, no login, no data collection. Every tool runs entirely in your browser, and no patient information is transmitted to any server. This is a reference publisher, not a clinical software vendor.
- Who are these tools built for?
Psychiatric prescribers (psychiatrists, psychiatric nurse practitioners, family medicine and internal medicine clinicians who prescribe psychiatric medications), psychiatric pharmacists, residents and fellows, medical students on psychiatry rotations, and psychiatric researchers who need quick reference lookups. Patients and family members can also use them for context, though the intended audience is clinical.
- Do these tools replace clinical judgment?
No, and they are not designed to. Every tool is a lookup against published reference data (FDA labels, published clinical guidelines, peer-reviewed literature). None of them personalizes to patient-specific factors like age, weight, organ function, genotype, comorbidities, or prior treatment history. Every prescribing decision belongs with the licensed clinician who knows the patient. The tools are aids for reading the same references clinicians would otherwise consult in three separate places.
- Where does the data come from?
Primary sources are FDA prescribing information via DailyMed, published clinical guidelines (ADA/APA metabolic monitoring, Ashton Manual, ISBD lithium consensus, Horowitz-Taylor tapering), peer-reviewed dose-equivalence studies (Woods 2003, Leucht 2014, Gardner 2010), the Flockhart Drug Interactions Table, and CPIC pharmacogenetic guidelines. Every result cites its source and shows the currency date.
- Are the tools kept up to date?
Yes. When FDA guidance changes (like the February 2025 clozapine REMS elimination) the corresponding tool is updated within days. New drugs are added as they receive approval. Currency dates are shown on every result so users can verify the data reflects the most recent version.
- Can I embed a tool in my clinic's intranet or teaching materials?
Yes. Every tool has an Embed action button that generates an iframe snippet you can paste into any web page. The embed is view-only and does not capture user data. Attribution to PsychiatryRx.org is embedded in the snippet. Direct linking to any tool is also welcome and encouraged.
- What is the difference between these tools and the clinician guides?
The guides are the written clinical write-ups: the context, the rationale, the evidence discussion. The tools are the interactive lookup layer over the same reference data. Most tools link to the corresponding guide. If you need to understand why a particular framework is used, read the guide. If you need to quickly generate a schedule or check an equivalent dose, use the tool.