RxLabelGuard delivers FDA-sourced drug interaction data through a REST API with severity scoring, mechanism details, and evidence citations. Transparent pricing starting at $0/month. No enterprise procurement required.
Lexicomp is a comprehensive clinical drug information database owned by Wolters Kluwer. Originally an independent company, Lexicomp was acquired by Wolters Kluwer in 2012 and has since been integrated into the UpToDate clinical decision support ecosystem. As of recent branding changes, Lexicomp drug content is increasingly marketed under the name UpToDate Lexidrug.
The Lexicomp platform provides detailed drug monographs, drug-drug interaction checking, drug-allergy cross-references, IV compatibility data, patient education materials, and pharmacogenomics information. It is widely used across hospitals, health systems, academic medical centers, and pharmacy programs. Lexicomp is often considered a direct competitor to Micromedex in the clinical reference space.
Lexicomp's drug interaction module classifies interactions by severity (major, moderate, minor) and includes clinical significance ratings, onset timing, and management recommendations. The database is maintained by a team of clinical pharmacists and pharmacologists who review primary literature and FDA safety communications.
Licensing for Lexicomp is typically structured as institutional subscriptions for hospitals and health systems, or individual subscriptions for clinicians and pharmacists. The platform is designed primarily as a clinical reference tool for healthcare professionals, not as a developer-facing API. Teams that need programmatic access to drug interaction data for integration into their own software products often find that the Lexicomp licensing model and delivery format do not align with their development workflow.
Lexicomp institutional subscriptions are priced for hospitals and health systems. Startups, independent developers, and smaller teams building focused applications often find the cost prohibitive when drug interaction checking is their only requirement. Individual clinician subscriptions exist but are not designed for programmatic API access.
Lexicomp is built as a clinical reference tool with a web and mobile interface for healthcare professionals to look up drug information at the point of care. Development teams that need to send drug names to an API endpoint and receive structured JSON interaction data find that the platform was not designed for their workflow.
As Wolters Kluwer integrates Lexicomp more deeply into UpToDate (now UpToDate Lexidrug), licensing may become tied to the broader UpToDate platform. Teams that only need drug interaction data do not want to license an entire clinical evidence platform to access a single feature.
There is no public API endpoint where developers can sign up, generate a key, and start querying drug interactions immediately. The procurement process involves contacting Wolters Kluwer sales, negotiating licensing terms, and completing an integration agreement -- a timeline that can stretch into months.
Development teams need pricing they can include in project budgets and business cases without a sales discovery process. Publicly listed pricing tiers with clear request limits allow teams to forecast costs accurately and start building immediately.
Healthcare applications need to demonstrate where drug interaction data originates. Teams want interaction results that include verifiable FDA label references -- SPL Set IDs, label sections, and evidence text -- for compliance documentation and clinical audit trails.
An honest side-by-side comparison to help you evaluate which solution fits your needs.
| Feature | Lexicomp (UpToDate Lexidrug) | RxLabelGuard |
|---|---|---|
| Data Source | Proprietary curated database with editorial review by clinical pharmacists and pharmacologists | FDA Structured Product Labeling (public, verifiable) |
| Scope | Full clinical reference: drug monographs, interactions, IV compatibility, patient education, pharmacogenomics | Focused on drug interaction detection with severity scoring and evidence citations |
| Pricing | Institutional subscriptions (contact sales, not publicly listed) or individual clinician plans | Free tier ($0), Developer ($20/mo), Professional ($99/mo) |
| Setup Time | Sales process: weeks to months (evaluation, licensing, integration) | Self-service: minutes to first API call |
| Free Tier | No free API tier available (limited trial may be offered) | Yes -- 50 requests/month on Sandbox plan |
| API Access | Designed as a clinical reference tool; no public developer API endpoint | Standard REST API with JSON responses |
| Interaction Output | Severity rating, clinical significance, onset, risk rating, management recommendations | Severity, mechanism of action, clinical recommendations, evidence citations |
| Evidence Citations | References to clinical literature and pharmacological studies within monographs | SPL Set ID + FDA label section + evidence text snippet per interaction |
| Drug Resolution | Proprietary drug identifiers within the Lexicomp database | RxNorm (RxCUI), NDC codes, brand and generic names with fuzzy matching |
| Platform Integration | Deep integration with UpToDate clinical evidence platform | Standard REST API compatible with any system that can make HTTP requests |
| Self-Service Signup | No -- requires enterprise sales process or institutional subscription | Yes -- create account, generate API key, start testing immediately |
Lexicomp offers substantially broader clinical content including comprehensive drug monographs, patient education materials, IV compatibility, pharmacogenomics, and integration with UpToDate clinical evidence. RxLabelGuard focuses specifically on drug interaction detection with FDA-sourced evidence.
Three steps from drug names to structured interaction data.
Pass drug names, NDC codes, or RxCUI identifiers to our REST API endpoint. We accept brand names, generic names, and common abbreviations.
Your input is normalized to RxCUI via RxNorm fuzzy matching, then we retrieve the latest FDA Structured Product Label for each drug.
Receive interaction pairs with severity level, mechanism of action, clinical recommendations, and FDA evidence citations including SPL Set ID and label section.
Check drug interactions in your language of choice. All responses include severity scoring and FDA evidence citations.
curl -X POST https://jd6095ijga.execute-api.us-east-2.amazonaws.com/v1/interactions/check \
-H "Content-Type: application/json" \
-H "x-api-key: YOUR_API_KEY" \
-d '{
"drugs": ["simvastatin", "amiodarone"]
}'import requests
response = requests.post(
"https://jd6095ijga.execute-api.us-east-2.amazonaws.com/v1/interactions/check",
headers={
"Content-Type": "application/json",
"x-api-key": "YOUR_API_KEY",
},
json={"drugs": ["simvastatin", "amiodarone"]},
)
data = response.json()
for interaction in data.get("interactions", []):
print(f"{interaction['severity']}: {interaction['description']}")const response = await fetch(
"https://jd6095ijga.execute-api.us-east-2.amazonaws.com/v1/interactions/check",
{
method: "POST",
headers: {
"Content-Type": "application/json",
"x-api-key": "YOUR_API_KEY",
},
body: JSON.stringify({ drugs: ["simvastatin", "amiodarone"] }),
}
);
const data = await response.json();
data.interactions.forEach((interaction) => {
console.log(`${interaction.severity}: ${interaction.description}`);
});If your team currently uses Lexicomp for drug interaction checking within a broader application, moving to an API-based approach with RxLabelGuard involves a straightforward integration change. Here is a typical migration path:
The key difference you will notice: Lexicomp interaction data comes from a proprietary curated database, while RxLabelGuard sources data from FDA Structured Product Labeling. We recommend running both in parallel for a testing period to validate that coverage meets your requirements for your specific drug combinations.
Teams move from clinical reference platforms to focused APIs when their use case is specific.
Development teams building drug interaction checking into electronic health record systems need an API they can call at the point of prescribing. A self-service API with clear documentation reduces integration time from months to days.
Pharmacy software vendors embedding interaction alerts into their dispensing workflow need programmatic access to interaction data with severity levels and clinical recommendations. Pay-per-use pricing aligns cost with actual usage.
Digital health startups and telehealth platforms need lightweight drug interaction checking that fits within their existing API architecture. A free tier allows prototyping before committing to a paid plan.
Pharmacy schools and research institutions using Lexicomp for reference may need programmatic interaction checking for research projects or student-built applications where institutional Lexicomp licenses are not available for API access.
Start free. Scale as you grow. No enterprise sales cycle required.
50 requests/month, 1 API key
2,000 requests/month, 5 API keys
20,000 requests/month, unlimited keys
Common questions about switching from Lexicomp to an API-based drug interaction solution.
No. Lexicomp is a comprehensive clinical reference platform that includes drug monographs, patient education materials, IV compatibility data, and pharmacogenomics information. RxLabelGuard is a focused drug interaction detection API.
If your use case is specifically drug interaction checking via a programmatic API -- for example, embedding interaction alerts into an EHR module, pharmacy tool, or telehealth application -- RxLabelGuard is a suitable alternative. If you need the full clinical reference suite that Lexicomp provides for bedside decision support, Lexicomp serves a broader purpose.
Lexicomp institutional subscriptions are not publicly listed and require contacting Wolters Kluwer sales for a custom quote based on your organization's size and needs. Individual clinician subscriptions are available but are not designed for programmatic API access.
RxLabelGuard offers transparent, publicly listed pricing: Sandbox ($0/mo, 50 requests), Developer ($20/mo, 2,000 requests), Professional ($99/mo, 20,000 requests). No credit card is required for the free tier, and you can upgrade or downgrade at any time without contract renegotiation.
UpToDate Lexidrug is the rebranded version of Lexicomp under Wolters Kluwer's evolving product strategy. It integrates Lexicomp's drug data more tightly with the UpToDate clinical evidence platform, providing clinicians with a unified experience for drug information and clinical guidelines.
The underlying drug interaction data is essentially the same; the primary changes are in branding, user interface, and platform integration. If you are looking for an alternative to either Lexicomp or UpToDate Lexidrug specifically for programmatic drug interaction checking, RxLabelGuard provides that capability through a REST API.
RxLabelGuard sources interaction data from FDA Structured Product Labeling (SPL), the authoritative public source for FDA-approved drug information. Lexicomp uses a proprietary database curated by clinical pharmacists that incorporates FDA data plus additional interactions sourced from medical literature and expert review.
Coverage may differ for some drug pairs. Lexicomp's editorial curation may include interactions not explicitly mentioned in FDA labels, while RxLabelGuard's FDA-sourced data provides traceable, auditable evidence citations. We recommend testing your critical drug combinations with our free Sandbox tier (50 requests/month) to validate coverage for your specific use case before committing.
Yes. Some teams use RxLabelGuard for programmatic drug interaction checking within their software applications while maintaining Lexicomp subscriptions for clinician-facing reference use. The two tools serve different purposes and can complement each other.
This approach is common during evaluation periods as well. You can test RxLabelGuard's API with your critical drug pairs using the free Sandbox tier while your organization continues using Lexicomp for clinical reference, then decide whether to fully transition your programmatic interaction checking to RxLabelGuard.
Create a free account and test with your critical drug pairs. No credit card, no sales call, no enterprise contract. Go from sign-up to first API response in minutes.
Already evaluating? Learn more about the free tier
Medical Disclaimer: This information is derived from FDA Structured Product Labeling and is provided for informational purposes only. It should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider. Lexicomp, UpToDate, and Lexidrug are registered trademarks of Wolters Kluwer Health, Inc. RxLabelGuard is not affiliated with or endorsed by Wolters Kluwer.