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Dose and Interaction Drill
Calculate it. Then ask what it interacts with.
Thirty-one label-style dose calculations and thirty drug-interaction rounds. Work the label card with a stepper and a unit picker, then name the mechanism and choose the action.
Free preview: four items. Unlock all 61. $3.99/month or $29.99/year
Live demo of Dose and Interaction Drill
Try it: work the label, then check the interaction
Two items from the app. Same stepper, unit picker and two-step flow as the app.
In the app
A real screen from Dose and Interaction Drill
From the iPhone app, in a pre-release build. The Android app follows the same design, and the text size can be changed from 40% to 300% on every screen.

Sources
Every fact in this app is cited
These are the references this app draws on. Inside the app, each answer links to its source in a reading window that keeps your place.
- CDC Clinical Practice Guideline for Prescribing Opioids for Pain, United States, 2022US Centers for Disease Control and Prevention (MMWR) · CDC clinical practice guideline
- Activase (alteplase) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Aldactone (spironolactone) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Anectine (succinylcholine chloride) injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Bactrim (sulfamethoxazole and trimethoprim) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Ceftriaxone for injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Children's ibuprofen oral suspension drug facts labelNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Ciprofloxacin tablets prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Colcrys (colchicine) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Colcrys (colchicine) prescribing information (second set)NLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Demerol (meperidine hydrochloride) injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Meperidine hydrochloride tablets and oral solution prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Diflucan (fluconazole) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Diltiazem hydrochloride in sodium chloride injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Diltiazem hydrochloride injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Dobutamine in dextrose injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Dobutamine in dextrose injection prescribing information (second labeler)NLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Dopamine hydrochloride in dextrose injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Dopamine hydrochloride injection (concentrate) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Eliquis (apixaban) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Entresto (sacubitril and valsartan) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- EpiPen and EpiPen Jr (epinephrine) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Flagyl (metronidazole) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Gentamicin sulfate injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Heparin sodium injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Humulin R (human insulin) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Kcentra (prothrombin complex concentrate, human) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Ketorolac tromethamine injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Lanoxin (digoxin) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Lasix (furosemide) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Levaquin (levofloxacin) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Levophed (norepinephrine bitartrate) injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Levophed (norepinephrine bitartrate) injection prescribing information (second set)NLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Lithium carbonate capsules prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Lopressor (metoprolol tartrate) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Lovenox (enoxaparin) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Nexterone (amiodarone) premixed injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Nitroglycerin in dextrose injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Nitroglycerin in dextrose injection prescribing information (second labeler)NLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Nitrostat (nitroglycerin) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Ofirmev (acetaminophen) injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Pacerone (amiodarone) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Plavix (clopidogrel) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Protamine sulfate injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Protamine sulfate injection prescribing information (second set)NLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Roxicodone (oxycodone hydrochloride) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Succinylcholine chloride injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Theophylline oral solution prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Tramadol hydrochloride tablets prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Vancomycin hydrochloride for injection prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Verapamil hydrochloride tablets prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Viagra (sildenafil) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Warfarin sodium tablets prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Xanax (alprazolam) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Zanaflex (tizanidine) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Zestril (lisinopril) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Zocor (simvastatin) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Zoloft (sertraline) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Zyvox (linezolid) prescribing informationNLM DailyMed (FDA-approved prescribing information) · FDA label / NLM DailyMed
- Acetaminophen: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Amiodarone: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Apixaban: MedlinePlus Drug InformationMedlinePlus (US National Library of Medicine) · NLM MedlinePlus Drug Information
- Ceftriaxone Injection: MedlinePlus Drug InformationMedlinePlus (US National Library of Medicine) · NLM MedlinePlus Drug Information
- Clopidogrel: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Digoxin: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Enoxaparin injection: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Epinephrine injection: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Furosemide: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Gentamicin injection: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Heparin: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Human insulin injection: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Ibuprofen: MedlinePlus Drug InformationMedlinePlus (US National Library of Medicine) · NLM MedlinePlus Drug Information
- Ketorolac: MedlinePlus Drug InformationMedlinePlus (US National Library of Medicine) · NLM MedlinePlus Drug Information
- Levofloxacin: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Linezolid: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Lisinopril: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Sertraline: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Sildenafil: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Simvastatin: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Spironolactone: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Tramadol: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Vancomycin injection: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Warfarin: drug informationNational Library of Medicine, MedlinePlus · NIH / NLM MedlinePlus
- Effectiveness of 4-Factor Prothrombin Complex Concentrate with and without Vitamin K in Managing Warfarin-Associated Major BleedingPubMed Central (open-access article) · PMC peer-reviewed article
- Low-dose vs. standard-dose alteplase for acute ischemic stroke: a retrospective cohort study of safety and efficacy in an Iranian populationPubMed Central (open-access article) · PMC peer-reviewed article
- CDC Clinical Practice Guideline for Prescribing Opioids for Pain, United States, 2022 (morphine milligram equivalent table)US Centers for Disease Control and Prevention (MMWR), full text in PubMed Central · CDC clinical practice guideline
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