5 Claude Prompts for Drug Interaction Checking

Why Use AI for Drug Interaction Review?

Pharmacists evaluate dozens of medication lists daily, and each list may contain multiple potential interactions that require clinical assessment. While drug interaction databases provide raw data, AI can synthesize that information into concise clinical summaries — including severity ratings, mechanisms, and actionable management recommendations — in seconds rather than minutes.

These prompts are designed for pharmacists and pharmacy students who want structured interaction analysis to complement their clinical databases. AI should never replace primary drug interaction references, but it can dramatically speed up the documentation and communication of interaction findings.

The Prompts

Prompt 1: Comprehensive Interaction Screen

Use this for a full interaction analysis of a multi-drug regimen.

You are a clinical pharmacy specialist. Analyze the following medication list for clinically significant drug-drug interactions.

MEDICATION LIST:
[List all medications with doses and frequencies]

PATIENT CONTEXT:
[Age, weight, relevant diagnoses, renal/hepatic function if known]

For each interaction found, provide:
1. The interacting drug pair
2. Severity rating (major, moderate, minor)
3. The pharmacological mechanism
4. Clinical significance — what could happen to the patient
5. Management recommendation — monitor, adjust dose, avoid combination, or substitute

Organize interactions by severity (major first). If no clinically significant interactions are found, state that clearly. Flag any combinations that require specific lab monitoring.

Prompt 2: Patient Counseling on Interactions

Use this to generate patient-friendly interaction explanations.

A patient is picking up the following medications and needs counseling on potential interactions. Write patient-friendly explanations at an 8th-grade reading level.

MEDICATIONS:
[List medications]

For each interaction:
- Explain what the interaction means in plain language
- Describe symptoms the patient should watch for
- Provide specific guidance (timing, food, what to avoid)
- State when to call their doctor or pharmacist

Keep medical jargon to a minimum. Use concrete examples (e.g., "take these at least 2 hours apart" rather than "stagger administration").

Prompt 3: Prescriber Communication

Use this to draft a professional interaction alert for the prescribing physician.

Draft a concise prescriber notification regarding a drug interaction identified during prescription review.

PATIENT: [Initials or case number — no identifying information]
PRESCRIBER: [Dr. name or specialty]
INTERACTION: [Drug A] + [Drug B]
CLINICAL CONCERN: [Brief description of the concern]

Include:
- The specific interaction and severity
- The mechanism in 1-2 sentences
- Published evidence or guideline reference if applicable
- 2-3 alternative therapy options ranked by preference
- Your clinical recommendation

Keep the tone collaborative and professional. Format as a brief clinical communication, not a letter.

Prompt 4: OTC and Supplement Interaction Check

Use this when a patient asks about adding an over-the-counter product or supplement to their regimen.

A patient currently takes the following prescription medications and is asking about adding [OTC product or supplement].

CURRENT MEDICATIONS:
[List medications]

PROPOSED ADDITION: [OTC drug or supplement with intended dose]

Evaluate:
1. Interactions between the proposed addition and current medications
2. Therapeutic duplication concerns
3. Any contraindications based on the patient's likely conditions (infer from medication list)
4. Recommended alternatives if the proposed product is problematic
5. Counseling points for the patient

Prompt 5: Polypharmacy Review Summary

Use this for elderly or complex patients on many medications.

Perform a comprehensive polypharmacy review for the following medication list. This patient is [age] with [relevant conditions].

MEDICATION LIST:
[List all medications including OTC, supplements, and PRN medications]

Analyze:
1. All drug-drug interactions (prioritized by clinical significance)
2. Therapeutic duplications
3. Medications that may no longer be indicated (deprescribing candidates)
4. High-risk medications per Beers Criteria (if patient is 65+)
5. Medications requiring renal/hepatic dose adjustment
6. Recommended monitoring parameters (labs, vitals, symptoms)

Summarize findings in a format suitable for a medication therapy management (MTM) comprehensive medication review.

Important Reminders

AI interaction analysis is a clinical decision support tool, not a replacement for primary drug interaction databases (Lexicomp, Clinical Pharmacology, Micromedex)

Always verify AI-generated interaction information against your primary clinical references before making patient care decisions

Never input patient names or identifying information into AI tools — use initials or case numbers

These prompts work best when you include patient context (age, renal function, diagnoses) for more clinically relevant results

For a faster workflow, try the Drug Interaction Checker — enter a medication list and get a structured interaction summary with severity ratings and management recommendations in one step.