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Drug information, drug interactions and pill identification

Drugs.com provides public medicine guides, interaction and food or lifestyle warnings for 2–10 medicines, pill matches by imprint, color, or shape, and listed US cash prices by strength, form, and quantity.

Check drug interactions

Check 2 to 10 medicine names for drug interactions and food or lifestyle warnings. Unrecognised or ambiguous names are listed; advice reflects Drugs.com’s public report.

Your information

Medicine names to check together, such as warfarin and aspirin.

Use the same format as these example values: "warfarin", "aspirin", "metformin".

Use the same format as these example values: "warfarin", "aspirin", "metformin".

1 credit per run

Example results

Interactions
Interactions
SeverityPage LinkExplanationMedicine OneMedicine TwoSeverity Meaning
major
Using warfarin together with aspirin may cause you to bleed more easily. You may need a dose adjustment based on your prothrombin time or International Normalized Ratio (INR). Call your doctor promptly if you have any unusual bleeding or bruising, vomiting , blood in your urine or stools, headache , dizziness, or weakness. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
warfarin
aspirin
Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Unrecognized Names
None
Food and Lifestyle Interactions
Food and Lifestyle Interactions
MedicineSeverityPage LinkSubstanceExplanationSeverity Meaning
aspirin
moderate
Alcohol (Ethanol)
Ask your doctor before using aspirin together with ethanol (alcohol). Do not drink alcohol while taking aspirin. Alcohol can increase your risk of stomach bleeding caused by aspirin. Call your doctor at once if you have symptoms of bleeding in your stomach or intestines. This includes black, bloody, or tarry stools, or coughing up blood or vomit that looks like coffee grounds. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
warfarin
moderate
Food/Lifestyle
Nutrition and diet can affect your treatment with warfarin. Therefore, it is important to keep your vitamin supplement and food intake steady throughout treatment. Vitamin K helps your blood clot, so eating more vitamin K can make warfarin less effective. You do not need to avoid foods with vitamin K, but you should keep your intake steady from day to day. Foods high in vitamin K include liver, broccoli, Brussels sprouts, cabbage, collard greens, endive, kale, lettuce, mustard greens, parsley, soybeans, spinach, Swiss chard, turnip greens, watercress, and other green leafy vegetables. Foods with moderate vitamin K levels include asparagus, avocados, dill pickles, green peas, green tea, canola oil, margarine, mayonnaise, olive oil, and soybean oil. Some foods that do not contain vitamin K may still affect warfarin. There have been reports of increased bleeding in patients who consumed large amounts of cranberry juice, grapefruit, grapefruit juice, or pomegranate juice. You should avoid or limit their consumption while you are receiving warfarin. If you take warfarin you should avoid large amounts or chronic consumption of alcohol. Alcohol may increase your risk of bleeding or clotting depending on the amount and pattern of alcohol consumption, as well as your liver function and disease state. If you get warfarin through a feeding tube, your doctor may adjust your feeding times around your medicine. Call your doctor right away if you notice unusual bruising, blood in your urine or stool, black or tarry stools, coughing up blood, vomiting blood, swelling or pain in your arms or legs, chest pain, trouble breathing, or sudden weakness or numbness. Talk to your doctor if you have questions about foods, substances or alcohol that may interact with warfarin. It is important to tell your doctor about all medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
warfarin
moderate
multivitamins with minerals
Rarely, vitamin supplements containing vitamin K may reduce the effectiveness of warfarin. This may be more likely to occur in individuals who have low levels of vitamin K in their blood. Before using any vitamin supplement, you should check the label to make sure it does not contain vitamin K. If it does, let your doctor know before you start using it. You may need more frequent monitoring of your INR after starting the supplement or whenever it is discontinued, and appropriate adjustments made in your dosage if necessary. It is important to tell your doctor about all other medications you use, including other nutritional supplements and herbs. Do not stop using any medications without first talking to your doctor.
Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
warfarin
moderate
Nicotine
As you stop smoking during treatment with nicotine, your dosage requirement of warfarin may need to be changed. Talk to your doctor if you have any questions or concerns. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
aspirin
minor
Caffeine
One study has reported that coadministration of caffeine and aspirin lead to a 25% increase in the rate of appearance and 17% increase in maximum concentration of salicylate in the plasma. A significantly higher area under the plasma concentration time curve of salicylate was also reported when both drugs were administered together. The exact mechanism of this interaction has not been specified. Physicians and patients should be aware that coadministration of aspirin and caffeine may lead to higher salicylate levels faster. References (1) Yoovathaworn KC, Sriwatanakul K, Thithapandha A (1986) "Influence of caffeine on aspirin pharmacokinetics." Eur J Drug Metab Pharmacokinet , 11, p. 71-6
Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
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About Drugs.com

Get drug returns plain-language medicine details from a required brand or generic name.

Check drug interactions compares 2 to 10 medicine names for medicine interactions and food or lifestyle warnings.

Identify pill uses an imprint, optionally color and shape; Get drug prices uses a medicine name, optionally strength, form, or quantity.

Built by Fous from drugs.com and checked automatically; it last passed a check on Sep 30, 2026. Fous is not affiliated with Drugs.com.

Actions

Check drug interactions

1 credit per run

Check 2 to 10 medicine names for drug interactions and food or lifestyle warnings. Unrecognised or ambiguous names are listed; advice reflects Drugs.com’s public report.

What you provide

FieldTypeRequiredDescription
MedicinesmedicinesListRequiredMedicine names to check together, such as warfarin and aspirin.

What you get

FieldTypeDescription
InteractionsinteractionsListMedicine-to-medicine interactions, most severe first.
Severityinteractions[].severityTextExample: Major
Page Linkinteractions[].page_linkTextExample: https://www.drugs.com/interactions-check.php?drug_list=2311-0%2C243-0
Explanationinteractions[].explanationTextExample: Using warfarin together with aspirin may cause you to bleed more easily. You…
Medicine Oneinteractions[].medicine_oneTextExample: Warfarin
Medicine Twointeractions[].medicine_twoTextExample: Aspirin
Severity Meaninginteractions[].severity_meaningTextExample: Highly clinically significant. Avoid combinations; the risk of the interaction…
Unrecognized Namesunrecognized_namesListNames that were not clearly recognised by the checker.
Food and Lifestyle Interactionsfood_and_lifestyle_interactionsListFood, alcohol and lifestyle warnings, most severe first.
Medicinefood_and_lifestyle_interactions[].medicineTextExample: Aspirin
Severityfood_and_lifestyle_interactions[].severityTextExample: Moderate
Page Linkfood_and_lifestyle_interactions[].page_linkTextExample: https://www.drugs.com/interactions-check.php?drug_list=2311-0%2C243-0
Substancefood_and_lifestyle_interactions[].substanceTextExample: Alcohol (Ethanol)
Explanationfood_and_lifestyle_interactions[].explanationText
Severity Meaningfood_and_lifestyle_interactions[].severity_meaningTextExample: Moderately clinically significant. Usually avoid combinations; use it only…

Example result

For Medicines: Warfarin, Aspirin

JSON
{
  "interactions": [
    {
      "severity": "major",
      "page_link": "https://www.drugs.com/interactions-check.php?drug_list=2311-0%2C243-0",
      "explanation": "Using warfarin together with aspirin may cause you to bleed more easily.  You may need a dose adjustment based on your prothrombin time or International Normalized Ratio (INR).  Call your doctor promp…",
      "medicine_one": "warfarin",
      "medicine_two": "aspirin",
      "severity_meaning": "Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit."
    }
  ],
  "unrecognized_names": [],
  "food_and_lifestyle_interactions": [
    {
      "medicine": "aspirin",
      "severity": "moderate",
      "page_link": "https://www.drugs.com/interactions-check.php?drug_list=2311-0%2C243-0",
      "substance": "Alcohol (Ethanol)",
      "explanation": "Ask your doctor before using aspirin together with ethanol (alcohol).  Do not drink alcohol while taking aspirin.  Alcohol can increase your risk of stomach bleeding caused by aspirin.  Call your doct…",
      "severity_meaning": "Moderately clinically significant. Usually avoid combinations; use it only under special circumstances."
    },
    {
      "medicine": "warfarin",
      "severity": "moderate",
      "page_link": "https://www.drugs.com/interactions-check.php?drug_list=2311-0%2C243-0",
      "substance": "Food/Lifestyle",
      "explanation": "Nutrition and diet can affect your treatment with warfarin.  Therefore, it is important to keep your vitamin supplement and food intake steady throughout treatment.  Vitamin K helps your blood clot, s…",
      "severity_meaning": "Moderately clinically significant. Usually avoid combinations; use it only under special circumstances."
    }
  ]
}

Get drug

1 credit per run

Get a plain-language medicine overview by brand or generic name from public Drugs.com pages. Some details are unavailable for certain medicines.

What you provide

FieldTypeRequiredDescription
MedicinemedicineTextRequiredBrand or generic medicine name, for example Lipitor or ibuprofen.Example: Ibuprofen

What you get

FieldTypeDescription
NamenameTextMedicine name.Example: Ibuprofen
Used forused_forTextShort description of what it treats.Example: Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID). It works by…
Page Linkpage_linkTextMedicine page link.Example: https://www.drugs.com/ibuprofen.html
Drug Classdrug_classTextDrug class.Example: Nonsteroidal anti-inflammatories (NSAIDs)
Brand Namesbrand_namesListOther brand names.
AvailabilityavailabilityTextPrescription only, over the counter, or both.Example: Both prescription and over the counter
Generic Namegeneric_nameTextGeneric medicine name.Example: Ibuprofen
Pregnancy Notespregnancy_notesTextPregnancy guidance.Example: Ask a doctor before using this medicine if you are pregnant or breastfeeding…
Generic Availablegeneric_availableYes or noWhether a generic version is available, or null when not stated.Example: Yes
Breastfeeding Notesbreastfeeding_notesTextBreastfeeding guidance.Example: Ask a doctor before using this medicine if you are pregnant or breastfeeding.
Common Side Effectscommon_side_effectsListCommon side effects.
Serious Side Effectsserious_side_effectsListSerious symptoms and side effects.
Dosage Forms and Strengthsdosage_forms_and_strengthsTextAvailable dosage forms and strengths listed on the medicine page.Example: oral capsule (200 mg), oral suspension (100 mg/5 mL; 50 mg/1.25 mL), oral…
Controlled Substance Schedulecontrolled_substance_scheduleTextSchedule in words if controlled, otherwise null.Example: Schedule II (high potential for abuse)

Example result

For Medicine: Ibuprofen

JSON
{
  "name": "Ibuprofen",
  "used_for": "Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID). It works by reducing hormones that cause inflammation and pain in the body. Ibuprofen is used to reduce fever and treat pain or inflammation…",
  "page_link": "https://www.drugs.com/ibuprofen.html",
  "drug_class": "Nonsteroidal anti-inflammatories (NSAIDs)",
  "brand_names": [
    "Advil",
    "Genpril",
    "IBU"
  ],
  "availability": "Both prescription and over the counter",
  "generic_name": "ibuprofen",
  "pregnancy_notes": "Ask a doctor before using this medicine if you are pregnant or breastfeeding. If you are pregnant, you should not take ibuprofen unless your doctor tells you to. Taking an NSAID at 20 weeks or later i…",
  "generic_available": true,
  "breastfeeding_notes": "Ask a doctor before using this medicine if you are pregnant or breastfeeding.",
  "common_side_effects": [
    "nausea, vomiting, gas",
    "bleeding",
    "dizziness , headache"
  ],
  "serious_side_effects": [
    "Get emergency medical help if you have signs of an allergic reaction to ibuprofen ( hives , difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat , burnin…",
    "Get emergency medical help if you have signs of a heart attack or stroke: chest pain spreading to your jaw or shoulder, sudden numbness or weakness on one side of the body, slurred speech, leg swellin…",
    "Stop using this medicine and call your doctor at once if you have:"
  ],
  "dosage_forms_and_strengths": "oral capsule (200 mg), oral suspension (100 mg/5 mL; 50 mg/1.25 mL), oral tablet (100 mg; 200 mg; 400 mg; 600 mg; 800 mg),  oral tablet, chewable (100 mg; 50 mg)",
  "controlled_substance_schedule": null
}

Get drug prices

1 credit per run

Get listed US cash prices by strength, form and quantity for a brand or generic medicine. Where a price is shown as a range, the lower listed amount is returned.

What you provide

FieldTypeRequiredDescription
FormformTextOptionalFilter by dosage form, for example tablet or oral capsule.Example: oral capsule
MedicinemedicineTextRequiredBrand or generic medicine name, for example atorvastatin.Example: Amoxicillin
QuantityquantityNumberOptionalFilter by listed quantity, for example 30 tablets or 30 milliliters.Example: 4
StrengthstrengthTextOptionalFilter by labeled strength, for example 20 mg.Example: 20 mg

What you get

FieldTypeDescription
NotenoteTextExplanation of the cash-price and insurance restrictions.Example: Prices are for cash-paying customers and are not valid with insurance plans…
PricespricesListListed cash prices for matching strengths, forms and quantities. For a listed price range, the price shown is the lower amount.
Formprices[].formTextExample: oral capsule
Priceprices[].priceNumberUS dollars, lowest listed amount when a range is shown.Example: 4.5
Page URLprices[].page_urlTextPublic price-guide page for this price.Example: https://www.drugs.com/price-guide/amoxicillin
Quantityprices[].quantityNumberExample: 4
Strengthprices[].strengthTextExample: 250 mg
Quantity Unitprices[].quantity_unitTextUnit for quantity, such as tablets or milliliters.Example: Capsules
Price Currencyprices[].price_currencyTextExample: USD
Price Per Unitprices[].price_per_unitNumberUS dollars per unit, lowest listed amount when a range is shown.Example: 1.13
Price Per Unit Currencyprices[].price_per_unit_currencyTextExample: USD
Medicine Namemedicine_nameTextName of the medicine on the price guide.Example: Amoxicillin

Example result

For Form: oral capsule, Medicine: Amoxicillin, Quantity: 4

JSON
{
  "note": "Prices are for cash-paying customers and are not valid with insurance plans. Prices may vary by pharmacy; where a range is listed, the lower price is shown.",
  "prices": [
    {
      "form": "oral capsule",
      "price": 4.5,
      "page_url": "https://www.drugs.com/price-guide/amoxicillin",
      "quantity": 4,
      "strength": "250 mg",
      "quantity_unit": "capsules",
      "price_currency": "USD",
      "price_per_unit": 1.13,
      "price_per_unit_currency": "USD"
    },
    {
      "form": "oral capsule",
      "price": 4.62,
      "page_url": "https://www.drugs.com/price-guide/amoxicillin",
      "quantity": 4,
      "strength": "500 mg",
      "quantity_unit": "capsules",
      "price_currency": "USD",
      "price_per_unit": 1.16,
      "price_per_unit_currency": "USD"
    }
  ],
  "medicine_name": "Amoxicillin"
}

Identify pill

1 credit per run

Find possible pill matches by imprint and optional color and shape. Returns up to 20 matching pills; the manufacturer field uses the company listed as labeler when available.

What you provide

FieldTypeRequiredDescription
ColorcolorTextOptionalPill color, for example white.Example: White
ShapeshapeTextOptionalPill shape, for example capsule, oval, or round.Example: Capsule
ImprintimprintTextRequiredLetters or numbers printed on the pill, for example L484.Example: L484

What you get

FieldTypeDescription
MatchesmatchesListPossible pills that match the description, at most 20.
Colormatches[].colorTextColor listed for this pill.Example: White
Shapematches[].shapeTextShape listed for this pill.Example: Capsule/Oblong
Imprintmatches[].imprintTextPill imprint shown for this match.Example: L484
Strengthmatches[].strengthTextStrength printed in the pill listing, when known.Example: 500mg
Manufacturermatches[].manufacturerTextCompany listed as labeler on the pill page, when available; it may not be the physical manufacturer.Example: Kroger Company
Medicine Namematches[].medicine_nameTextName of the identified medicine.Example: Acetaminophen
Pill Page Linkmatches[].pill_page_linkTextLink to this pill’s details.Example: https://www.drugs.com/imprints/l484-10944.html
Pill Image Linkmatches[].pill_image_linkTextLink to a photo of the pill, when available.Example: https://www.drugs.com/images/pills/custom/pill10944-1.avif

Example result

For Color: White, Shape: Capsule, Imprint: L484

JSON
{
  "matches": [
    {
      "color": "White",
      "shape": "Capsule/Oblong",
      "imprint": "L484",
      "strength": "500mg",
      "manufacturer": "Kroger Company",
      "medicine_name": "Acetaminophen",
      "pill_page_link": "https://www.drugs.com/imprints/l484-10944.html",
      "pill_image_link": "https://www.drugs.com/images/pills/custom/pill10944-1.avif"
    }
  ]
}

For developers

Run this workflow from your own code. In Studio, turn on Developer mode and create an API key.

cURL
# First set your key: export FOUS_API_KEY='YOUR_FOUS_API_KEY'
: "${FOUS_API_KEY:?Set FOUS_API_KEY before running this example}"

curl 'https://api.fous.com/v1/query' \
  --fail-with-body --silent --show-error --max-time 120 \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "api": "@drugs-com",
  "visibility": "public",
  "operation": "check_drug_interactions",
  "version": 1,
  "input": {
    "medicines": [
      "warfarin",
      "aspirin"
    ]
  },
  "response": {
    "format": "json"
  }
}'

What you can do with it

  • Review a medicine’s uses and common or serious side effects.
  • Check medicines for possible interactions and food or lifestyle warnings.
  • Find possible pill matches using an imprint, color, and shape.
  • Compare listed cash prices by medicine strength, form, and quantity.
  • Review pregnancy and breastfeeding notes for a medicine.

Questions

Is Fous affiliated with Drugs.com?

No. Fous is not affiliated with Drugs.com. This workflow reads the public drugs.com website and returns its data.

How much does it cost?

Each run costs 1 credit. With pay-as-you-go, a credit costs 1¢; monthly plans cost less per credit.

Do I need a Drugs.com account?

No. You only need a Fous account.

How current is the data?

Fous gets the data from drugs.com when you run it; repeating the same request within a day may return the saved result. Fous checks this workflow automatically; it last passed a check on Sep 30, 2026.

What is this medicine used for?

Get drug returns a short description of what a named medicine treats.

Do these medicines interact?

Check drug interactions checks 2 to 10 medicine names and returns medicine interactions and food or lifestyle warnings.

What pill matches this imprint?

Identify pill returns possible matches from the required imprint and optional color and shape.

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