FDA-filed SPL labeling · retrieved through openFDA

Aspirin

Aspirin is a pain reliever and fever reducer used across multiple products to temporarily relieve minor aches and pains, reduce fever, and — in some formulations — help prevent a repeat heart attack or stroke under a doctor's supervision.

Brand names EntercoteZorprinValomagUni-TrenUni-Buff +11 more
Drug classes ⓘ Anti-inflammatory Agents
OTC Forms 7 Routes Oral · Rectal
Dr. Brian Staiger, PharmD, BCPS
Reviewed by Last reviewed Jul 10, 2026
🧬 Where this information comes from Click to expand

The clinical label records used on this page are FDA-filed Structured Product Labeling (SPL) retrieved through openFDA. We identified 446 clinical label sets within the page’s selected clinical scope after exact ingredient or ingredient-combination matching and applicable route/form matching. Forms, routes, brands, labelers, strengths, and NDC product-record counts are built separately from matching FDA National Drug Code Directory records. The linked DailyMed document is a representative official source for verification, not the page’s only clinical source. View the linked label on DailyMed →

At a glance
Linked label effectiveDec 30, 2024
Clinical labels in scope ⓘ446
AvailabilityOTC
Earliest approval/marketing year ⓘ1985
FDA-listed product records ⓘ1,262
Boxed warningNone found in compared labels
How we combine label and product data →
Other forms & routes:
Rectal
⭐ Aspirin at a glance The quick version — the full detail is in the Patient Information Guide below.
💊
HelloPharmacist Editorial Team Bottom Line
Aspirin reliably relieves minor pain and reduces fever in adults when used as directed and for a short time. Some coated tablet products are also used under a doctor's supervision to help prevent a repeat heart attack or stroke. Always talk to your doctor or pharmacist before starting aspirin regularly, especially if you take blood thinners, have stomach problems, are pregnant, or are considering giving it to a child.
How we write & review this content — our editorial policy →

📖 Aspirin: Patient Information Guide

A plain-language walkthrough of Aspirin — what it treats, how it works, how it’s taken, side effects, warnings and interactions. Tap any section to expand it.

🎯What it's used for▾

Aspirin is a widely available pain reliever, fever reducer, and — in specific coated products under medical supervision — a tool for preventing repeat heart attacks or strokes.

  • Temporary relief of minor headache pain
  • Temporary relief of backache
  • Temporary relief of muscle aches
  • Temporary relief of toothache
  • Temporary relief of minor arthritis pain
  • Temporary relief of menstrual and premenstrual cramps (Vazalore)
  • Temporary relief of aches and pains associated with the common cold
  • Temporary reduction of fever
  • Some coated aspirin tablet products note that, for adults who have already had a heart attack or stroke, aspirin can help prevent another one — but only under a doctor's supervision
💊How it's taken▾

Aspirin comes in several oral forms — capsules, regular tablets, chewable tablets, and delayed-release (enteric-coated) tablets — and is generally taken every 4 to 6 hours while symptoms last. Always take it with a full glass of water.

  • Use the smallest dose that helps, and do not take it for more than 10 days unless your doctor directs otherwise
  • Delayed-release and enteric-coated products are not designed for fast relief — if you need quick pain relief, they are not the right choice
  • Children under 12 should not take aspirin unless a doctor says to
  • Follow the directions on your specific product label or your prescriber's guidance — dosing varies by product and form
🤒Side effects — in detail▾

The most commonly reported side effects with aspirin involve the stomach and ears.

  • Stomach upset, irritation, or pain
  • Heartburn or nausea
  • Ringing in the ears (tinnitus)
  • Hearing changes

Serious reactions — including signs of stomach bleeding (vomiting blood, black stools, feeling faint) or a severe allergic reaction (hives, facial swelling, wheezing) — require immediate medical attention. Stop taking aspirin and get help right away if any of these occur.

⚠️Warnings & precautions▾
  • Stomach bleeding: Aspirin can cause severe stomach bleeding. Risk is higher in people 60 or older, those with a history of ulcers, people taking blood thinners or steroids, and people who drink 3 or more alcoholic beverages per day.
  • Reye's syndrome: Children and teenagers with chickenpox or flu-like illness should never take aspirin. Reye's syndrome is a rare but serious condition affecting the brain and liver.
  • Allergic reactions: Aspirin can trigger severe allergic reactions including hives, facial swelling, shock, and wheezing — especially in people with asthma or prior aspirin sensitivity.
  • Pregnancy: Do not use aspirin during the last 3 months of pregnancy unless specifically directed by a doctor. It can harm the unborn baby and cause delivery complications.
  • Overdose: Seek emergency help immediately if too much is taken — even if there are no symptoms at first.
🔀What it interacts with▾

Aspirin can interact with several common medications and substances, raising the risk of serious side effects.

  • Blood thinners (anticoagulants): Increases bleeding risk significantly
  • Steroid medications: Raises the chance of stomach bleeding
  • Other NSAIDs (ibuprofen, naproxen, others): Combining them amplifies stomach bleeding risk and other side effects
  • Prescription diabetes medications: Aspirin may affect how these drugs work — check with your doctor or pharmacist
  • Prescription gout medications: Potential interaction — discuss with your doctor or pharmacist
  • Prescription arthritis medications: Potential interaction — discuss with your doctor or pharmacist
  • Diuretics (water pills): Check with your doctor or pharmacist before combining
  • Alcohol (3 or more drinks per day): Significantly increases the risk of serious stomach bleeding

This is not a complete list of interactions. Always talk with your doctor or pharmacist before starting, stopping, or changing any medication.

📋Before taking it▾
  • Do not use if you have ever had an allergic reaction to aspirin or any other pain reliever or fever reducer
  • Tell your doctor or pharmacist if you have high blood pressure, heart disease, liver cirrhosis, or kidney disease
  • Tell your doctor or pharmacist if you have a history of stomach ulcers or heartburn
  • Tell your doctor or pharmacist if you have asthma
  • Tell your doctor or pharmacist if you take any prescription medications — including drugs for diabetes, gout, or arthritis — or a diuretic
  • Do not give to children under 12 years of age
  • Children or teenagers with chickenpox or flu-like symptoms must not use aspirin — risk of Reye's syndrome
  • If you are pregnant or breastfeeding, ask a health professional before use; avoid aspirin during the last 3 months of pregnancy unless your doctor specifically instructs otherwise
  • Adults age 60 or older face a higher risk of stomach bleeding with aspirin use
🚑If you take too much▾

Taking too much aspirin can be dangerous — even if you don't notice symptoms right away. If an overdose is suspected, call Poison Control at 1-800-222-1222 or seek emergency medical help immediately. Quick action is critical for both adults and children.

📦How to store it▾

Store at 15-30°C (59-86°F) Avoid excessive heat above 40°C (104°F) Do not use if the blue band around the capsule is missing or broken

📄 Written from Aspirin’s FDA-approved label information, summarized in plain language with AI, and reviewed by our pharmacy team before publication. Every point is grounded in that labeling — nothing is invented. How we use AI →

255

Supplements & herbs that interact with Aspirin

255 supplements and herbal products have documented interactions with Aspirin in the licensed clinical database we use. Most are manageable — but your pharmacist should know about everything you take, including vitamins and herbals.

Severity mix
  • Major · 7
  • Moderate · 211
  • Minor · 37
ACTIVATED CHARCOAL Major ASARABACCA Major BEER Major DANSHEN Major PIRACETAM Major SIBERIAN COCKLEBUR Major WINE Major ACONITE Moderate +247 more
Every supplement checked against Aspirin — ranked by severity The full interaction hub: 7 major · 211 moderate · 37 minor · every one linked to its full report. Check Aspirin against your exact supplements

Educational information from a licensed clinical database (Natural Medicines) — see our data sources & update cadence. Not medical advice: an interaction being documented does not mean it will happen to you; do not start or stop medications or supplements without professional guidance.

7

Nutrient depletion considerations

Aspirin has been associated with lower levels of 7 nutrients in the clinical literature. This does not mean a deficiency will occur — it means these may be worth discussing with your pharmacist or healthcare provider, especially with long-term use.

Evidence & significance mix
  • Higher significance · 3
  • Moderate · 3
  • Unrated · 1
FOLIC ACID Insignificant Depletion IRON Insignificant Depletion VITAMIN C Insignificant Depletion CALCIUM Moderate Depletion PHOSPHATE SALTS Moderate Depletion VITAMIN B12 Moderate Depletion CHROMIUM Insufficient Evidence
See the full Aspirin nutrient depletion report

Educational information from a licensed clinical database (Natural Medicines) — not medical advice. Do not start or stop medications or supplements without professional guidance.

🩺 Pharmacist Counseling Corner

Quick, plain-English answers to the questions patients ask most about Aspirin — the kind of thing our pharmacy team would talk through with you at the counter.

What is aspirin actually used for? ▾
Aspirin is used to temporarily relieve common minor pains — things like headaches, backaches, muscle aches, toothaches, menstrual cramps, and discomfort from a cold — and to reduce fever. Some coated aspirin tablet products are also used under a doctor's supervision to help prevent a second heart attack or stroke in people who've already had one. That's a doctor-guided use, so don't start it on your own without talking to your healthcare provider first.
Can I give aspirin to my child? ▾
Generally, no — aspirin should not be given to children under 12. More importantly, children and teenagers who have or are recovering from chickenpox or a flu-like illness should never take aspirin, regardless of age. That's because of a rare but serious condition called Reye's syndrome, which can affect the brain and liver. If your child needs pain or fever relief, talk to your doctor about other options.
Does aspirin upset your stomach? What can I do about it? ▾
Yes, stomach upset, heartburn, and nausea are real possibilities with aspirin. Taking it with a full glass of water helps. Some people tolerate enteric-coated or delayed-release forms better — though those aren't meant for fast pain relief. If you experience stomach pain that doesn't improve, or signs of bleeding like black stools or vomiting blood, stop taking it and get medical attention right away.
Are there medications or things I should avoid while taking aspirin? ▾
Yes, a few important ones. If you take a blood thinner, steroid, or another NSAID like ibuprofen or naproxen, combining them with aspirin raises your risk of serious stomach bleeding. Drinking three or more alcoholic beverages a day while taking aspirin also significantly increases that risk. If you're on prescription medications for diabetes, gout, arthritis, or take a water pill (diuretic), check with your doctor or pharmacist before using aspirin.
Is it safe to take aspirin if I'm pregnant? ▾
It's especially important not to use aspirin during the last three months of pregnancy unless your doctor specifically tells you to. It can cause problems for the unborn baby and complications during delivery. If you're breastfeeding, check with a health professional before using it as well. When in doubt, always ask before taking any medication during pregnancy.
How long can I take aspirin for pain or fever? ▾
For self-care use, don't take aspirin for more than 10 days for pain or more than 3 days for fever without talking to a doctor. If your pain gets worse, your fever climbs or doesn't break, or new symptoms appear, stop and call your doctor. Always use the smallest dose that gives you relief — more isn't better with aspirin.
Is Aspirin available over the counter? ▾
Yes — Aspirin is available over the counter (without a prescription) in at least some forms, according to its FDA labeling. Follow the package directions and ask your pharmacist if you're unsure which product is right for you.
When was Aspirin first available? ▾
Aspirin has been available in the United States since at least 1985, based on FDA approval history (Drugs@FDA) and product marketing records.
Who makes Aspirin? ▾
Aspirin is supplied by 260 manufacturers listed in the FDA NDC Directory, including Strategic Sourcing Services LLC, Bryant Ranch Prepack, Cardinal Health 110, LLC. DBA Leader.

💬 Answers drafted from Aspirin’s FDA-approved label information, summarized in plain language with AI, and reviewed by our pharmacy team before publication. Grounded in that labeling — nothing is made up. How we use AI →

🧰 Keep exploring

📊Aspirin supplement interactions255 checked — ranked by severity 🌿Drug & Supplement CheckerAspirin vs. vitamins & herbs 💬Ask a PharmacistFree answer, usually < 24h 🔎NDC & pricing lookupFind Aspirin NDCs & costs 🅰️Browse Drugs A–ZLook up any medication

💊 How Aspirin comes

Aspirin is available in 7 forms. Different forms and brands can have different approved uses, doses, schedules, and directions. Follow the instructions for your exact product, and do not switch forms without guidance from your prescriber or pharmacist.

Tablet

By mouth
Brands Aspirin Low Dose Aspirin Pain reliver Aspirn Bayer
How this form is used
What it may be used for
  • Temporarily relieves minor aches and pains including headaches, muscle pain, toothaches, menstrual pain, colds, and minor arthritis pain
  • Temporarily reduces fever
  • Bayer: because of its delayed action, this product will not provide fast relief of headaches or other symptoms needing immediate relief
  • Ask your doctor about other uses for these aspirin tablet products
Important instructions
  • Aspirina: drink a full glass of water with each dose; adults and children 12 years and over take 1 or 2 tablets every 4 to 6 hours, not to exceed 8 tablets in 24 hours; children under 12 — consult a doctor
  • Aspirn: adults and children 12 years and over take 1 or 2 tablets with water every 4 hours as needed, not to exceed 12 tablets in 24 hours; do not give to children under 12
  • Aspirn: do not use for longer than 10 days unless directed by a doctor; use the smallest effective dose
  • Bayer: because of its delayed action, this product will not provide fast relief — ask your doctor about appropriate use
Available strengths 6 strengths
81 mg 81 mg/265.45 mg 325 mg 500 mg 500 mg/5001 325 1
645 FDA-listed product records ⓘ

Delayed-release tablet

By mouth
Brands Adult Low Dose Adult Low Dose Aspirin Adult Low Dose Aspirin Enteric Coated Low Dose Aspirin
How this form is used
What it may be used for
  • Temporarily relieves minor aches and pains or as recommended by your doctor
  • Because of their delayed-release design, these products will not provide fast relief of headaches or symptoms needing immediate relief
  • Ask your doctor about other uses for these enteric-coated or delayed-release aspirin products
Important instructions
  • Take by mouth as directed on your specific product label or by your doctor
  • These delayed-release tablets are not suitable when you need fast pain relief
Available strengths 4 strengths
81 mg 81 mg/811 325 mg 325 mg/3251
336 FDA-listed product records ⓘ

Chewable tablet

By mouth
Brands Bayer Chewable - Aspirin Regimen
How this form is used
What it may be used for
  • Bayer Chewable - Aspirin Regimen temporarily relieves minor aches and pains or as recommended by your doctor
Important instructions
  • Bayer Chewable - Aspirin Regimen: drink a full glass of water with each dose
  • Bayer Chewable - Aspirin Regimen: adults and children 12 years and over take 4 to 8 tablets every 4 hours, not to exceed 48 tablets in 24 hours unless directed by a doctor
  • Bayer Chewable - Aspirin Regimen: children under 12 years — consult a doctor
Available strengths 1 strength
81 mg
227 FDA-listed product records ⓘ

Capsule

By mouth
Brands Vazalore
How this form is used
What it may be used for
  • Vazalore temporarily relieves minor aches and pains from headaches, backaches, muscle aches, toothaches, premenstrual and menstrual cramps, colds, and minor arthritis pain
  • Vazalore temporarily reduces fever
  • Ask your doctor about other uses of Vazalore aspirin capsules
Important instructions
  • Vazalore: drink a full glass of water with each dose
  • Vazalore: adults and children 12 years and over may take 1 or 2 capsules every 4 hours or 3 capsules every 6 hours while symptoms persist
  • Vazalore: do not exceed 12 capsules in 24 hours
  • Vazalore: children under 12 years — consult a doctor before use
Available strengths 3 strengths
81 mg 81 mg/81 mg 325 mg/325 mg
5 FDA-listed product records ⓘ

Rectal suppository

Rectal
Available strengths 2 strengths
300 mg 600 mg
3 FDA-listed product records ⓘ

Oral powder

By mouth
Available strengths 1 strength
81 mg/2 g
1 FDA-listed product record ⓘ

Orally disintegrating tablet

By mouth
Available strengths 1 strength
325 mg/325 mg
1 FDA-listed product record ⓘ

📊 Aspirin across the U.S. market

How Aspirin appears in the FDA’s National Drug Code Directory — including its dosage forms, strengths, brand names, manufacturers, and FDA-listed product records. These are directory records, not sales or prescription volume.

7
Dose forms ⓘ
260
Manufacturers
40
Brand names
1,262
FDA-listed product records ⓘ
1985
First marketed ⓘ

FDA-listed product records by dose form (tablet variants merged) — FDA National Drug Code Directory. Record counts are not sales or prescription volume.

Also listed with the FDA, not a patient dose form: Powder (30) · Granule (6) · Crystal (5) · Kit (3) — bulk drug substance sold to compounders/manufacturers and multi-item kits. These aren’t counted in the dose-form total above.

Strategic Sourcing Services LLC5%
Bryant Ranch Prepack4%
Cardinal Health 110, LLC. DBA Leader4%
CVS Pharmacy4%
Major Pharmaceuticals3%
Walgreen Company3%
Other makers76%

Share of FDA-listed product records by manufacturer — FDA National Drug Code Directory. Record counts are not sales or prescription volume.

📈 How widely Aspirin is used

A general measure of how commonly Aspirin is prescribed, based on Medicaid — one of the largest public drug programs. The figure below is prescriptions filled in Q1–Q4 2025, summed across every form and brand of the drug.

Think of this as a proxy for how widely Aspirin is used, drawn from freely available public data. Medicaid is just one program — these numbers don’t include Medicare, other government coverage, or commercial and cash-pay prescriptions, so real-world use is higher than what’s shown here.

6,339,210
Medicaid prescriptions filled (Q1–Q4 2025)
$49.9M gross Medicaid reimbursement (before mandatory rebates — net cost is lower)

How commonly is Aspirin prescribed? Of the 1,596 medications we measure, Aspirin ranks #27 by Medicaid prescriptions — more than 98% of them.

Where Aspirin ranks among the drugs we measure · Q1–Q4 2025 · neighbors ±5
Total prescriptions — #27 of 1,596
#22 Lisinopril 6,788,371 Rx #23 Famotidine 6,721,162 Rx #24 Bupropion 6,669,702 Rx #25 Fluoxetine 6,471,546 Rx #26 Escitalopram 6,377,287 Rx #27 Aspirin 6,339,210 Rx #28 Losartan 5,992,816 Rx #29 Metoprolol 5,974,670 Rx #30 Clonidine 5,852,758 Rx #31 Semaglutide 5,813,664 Rx #32 Pantoprazole 5,789,599 Rx

Utilization by Aspirin product

Pick a product to see its own Medicaid numbers. Each chip is one clinical product — a specific strength & dosage form as defined by RxNorm — with brand-name and generic versions combined.

The 81 mg delayed release oral tablet is the most-dispensed Aspirin product — about 74% of these Medicaid prescriptions.

aspirin 81 MG Delayed Release Oral Tablet Most dispensed

4,673,509 Medicaid prescriptions (Q1–Q4 2025) 74% of Aspirin prescriptions shown $38.3M gross reimbursement (before rebates) ≈ $8.20 per prescription (gross)

Summed across the 31 of 538 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 308416

aspirin 81 MG Chewable Tablet

1,536,021 Medicaid prescriptions (Q1–Q4 2025) 24% of Aspirin prescriptions shown $10.6M gross reimbursement (before rebates) ≈ $6.91 per prescription (gross)

Summed across the 16 of 165 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 318272

aspirin 325 MG Delayed Release Oral Tablet

74,257 Medicaid prescriptions (Q1–Q4 2025) 1% of Aspirin prescriptions shown $557,194 gross reimbursement (before rebates) ≈ $7.50 per prescription (gross)

Summed across the 7 of 174 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 198467

aspirin 325 MG Oral Tablet

55,423 Medicaid prescriptions (Q1–Q4 2025) <1% of Aspirin prescriptions shown $371,210 gross reimbursement (before rebates) ≈ $6.70 per prescription (gross)

Summed across the 8 of 335 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 212033

Shares are of the Medicaid prescriptions shown here. Product grouping follows RxNorm (the National Library of Medicine’s drug terminology), so “one product” means one strength & dosage form regardless of manufacturer. Dollar figures are gross Medicaid reimbursement before mandatory rebates — rebates (often large, especially for brand-name drugs) are confidential, so actual net cost to Medicaid is lower than shown.

Source: Medicaid State Drug Utilization Data (CMS), aggregated by generic ingredient — summed across every NDC (all brands, strengths, salt forms and dosage forms) of Aspirin, and across all states and both fee-for-service and managed-care claims. A general popularity signal; it excludes Medicare, commercial insurance and cash prescriptions, so it is not total U.S. use. Based on the 62 of 1,212 listed Aspirin NDCs with Medicaid activity.

🔍 Compare Aspirin products

A representative set of FDA-listed product records for Aspirin — across manufacturers, strengths, and dosage forms, grouped by form with each product’s manufacturer and how the FDA approved it. The same medicine may be made and packaged by different companies, so a single drug can have many directory entries. (It’s also why a refill can look different — a new shape, color, or box — even though it contains the same medication.)

Showing 200 of 1,262 products — FDA National Drug Code Directory. See every product, package size and price: browse all 1,262 Aspirin NDCs →

RxNorm Concept Web — From Ingredient to Every Form and Strength

This page starts with one ingredient concept (IN). The branches below show its dose-form concepts (SCDF), then the available clinical drug and strength concepts (SCD). Combination products remain separate concepts with their own pages.

Ingredient (IN) Aspirin RxCUI 1191 13 dose forms · 40 strengths
  1. Dose form (SCDF) Chewable Tablet RxCUI 370614 In current FDA listings
    Clinical drug / strength (SCD) 60 MG RxCUI 333834 81 MG RxCUI 318272 120 MG RxCUI 1433630 300 MG RxCUI 433353
  2. Dose form (SCDF) Chewing Gum RxCUI 370942 No current FDA listing
    Clinical drug / strength (SCD) 228 MG RxCUI 853499
  3. Dose form (SCDF) Delayed Release Oral Capsule RxCUI 405802 No current FDA listing
  4. Dose form (SCDF) Delayed Release Oral Tablet RxCUI 370939 In current FDA listings
    Clinical drug / strength (SCD) 75 MG RxCUI 103954 81 MG RxCUI 308416 162 MG RxCUI 198477 165 MG RxCUI 308403 300 MG RxCUI 104899 325 MG RxCUI 198467 500 MG RxCUI 308409 650 MG RxCUI 308411 975 MG RxCUI 308417
  5. Dose form (SCDF) Disintegrating Oral Tablet RxCUI 379422 In current FDA listings
    Clinical drug / strength (SCD) 75 MG RxCUI 104475
  6. Dose form (SCDF) Effervescent Oral Tablet RxCUI 1537020 In current FDA listings
    Clinical drug / strength (SCD) 325 MG RxCUI 2606079
  7. Dose form (SCDF) Extended Release Oral Capsule RxCUI 376394 No current FDA listing
    Clinical drug / strength (SCD) 24 HR aspirin 162.5 MG RxCUI 1665356
  8. Dose form (SCDF) Extended Release Oral Tablet RxCUI 370612 No current FDA listing
  9. Dose form (SCDF) Oral Capsule RxCUI 370940 In current FDA listings
    Clinical drug / strength (SCD) 81 MG RxCUI 252857 325 MG RxCUI 198466
  10. Dose form (SCDF) Oral Powder RxCUI 379497 In current FDA listings
    Clinical drug / strength (SCD) 1 MG/MG RxCUI 900470 650 MG RxCUI 247137
  11. Dose form (SCDF) Oral Solution RxCUI 375972 No current FDA listing
    Clinical drug / strength (SCD) 1.5 MG/ML RxCUI 685589 2.5 MG/ML RxCUI 688214
  12. Dose form (SCDF) Oral Tablet RxCUI 370611 In current FDA listings
    Clinical drug / strength (SCD) 75 MG RxCUI 104474 81 MG RxCUI 243670 100 MG RxCUI 246461 300 MG RxCUI 199281 325 MG RxCUI 212033 500 MG RxCUI 198471 650 MG RxCUI 198475 800 MG RxCUI 349516 975 MG RxCUI 391930 3900 MG RxCUI 892160 15600 MG RxCUI 891134 31200 MG RxCUI 891136
  13. Dose form (SCDF) Rectal Suppository RxCUI 370609 In current FDA listings
    Clinical drug / strength (SCD) 120 MG RxCUI 198461 150 MG RxCUI 103863 200 MG RxCUI 198463 300 MG RxCUI 198464 600 MG RxCUI 198473

Look up RxCUI 1191 in the RxCUI Atlas →

RxNorm is the U.S. National Library of Medicine’s normalized drug vocabulary. Its concept hierarchy can include forms that are not currently marketed; the status on each branch compares that concept with current FDA listings. RxCUIs identify vocabulary concepts, not individual packages or manufacturers.

🏷️ Sold under these brand names

Entercote Zorprin Valomag Uni-Tren Uni-Buff Sloprin Ridiprin Minitabs Miniprin Magnaprin Halfprin Genprin Gennin-FC Genacote Acuprin Entaprin

🏭 Manufacturers & labelers

Strategic Sourcing Services LLC 36 Bryant Ranch Prepack 27 Cardinal Health 110, LLC. DBA Leader 27 CVS Pharmacy 25 Major Pharmaceuticals 23 Walgreen Company 23 Valu Merchandisers Company 23 Spirit Pharmaceuticals Llc 22 A-S Medication Solutions 22 Rite Aid Corporation 22 Dolgencorp, Llc 22 Allegiant Health 21 Unifirst First Aid Corporation 20 L.N.K. International, Inc. 19 Amerisource Bergen 19 Proficient Rx LP 18 Bayer HealthCare LLC. 17 United Natural Foods, Inc. dba UNFI 17 Wal-Mart Stores Inc 17 Harris Teeter 15 Better Living Brands, LLC 14 Rugby Laboratories 14 Chain Drug Marketing Association Inc 14 L. Perrigo Company 14

…and 16 more on the FDA NDC directory.

RxNorm drug class

Aspirin belongs to the Platelet Aggregation Inhibitor class.

Pharmacologic class Platelet Aggregation Inhibitor, Nonsteroidal Anti-inflammatory Drug
Drug family (ATC) Other agents for local oral treatment, Platelet aggregation inhibitors excl. heparin, Salicylic acid and derivatives
How it works Cyclooxygenase Inhibitors

Classified by RxNorm RxClass — the U.S. National Library of Medicine's standardized drug-classification service (Established Pharmacologic Class from the FDA, the ATC drug family from the WHO, and mechanism of action). Reference only, not medical advice.

🔬 Where this comes from

Core label, product, RxNorm, safety, and utilization data on this page come from the sources identified below. AI-written, editorial, and licensed sections are labeled separately.

📄
FDA-filed drug labels (SPL) Uses, dosing, warnings & side effects from SPL records retrieved through openFDA; the linked representative set can be verified on DailyMed. ✓ Linked label effective Dec 30, 2024
🏭
Forms, brands & labelersAggregated from ingredient-matched FDA National Drug Code Directory product records for Aspirin.
📈
Real-world reportsThe FDA Adverse Event Reporting System (FAERS), served through openFDA.
🚨
Recalls & shortagesopenFDA drug-enforcement reports and the FDA drug-shortage database.
🧾 Clinical label set — FDA-filed SPL labels retained for Aspirin after exact ingredient or ingredient-combination matching and applicable route/form matching
Clinical labels in scope
446
NDC products indexed
1,262
Distinct labelers/manufacturers represented
260
Linked representative label ⓘ
PLx Pharma Inc
Linked label effective
Dec 30, 2024
Composite sections available
7
Linked SPL Set ID
c623d479-f7c9-da5d-e053-2a95a90a898a
Linked SPL Document ID
2a8902c7-0a86-5d9e-e063-6394a90a4198
Open the linked representative label on DailyMed ↗
NDC package records associated with this linked SPL 1

How we combine label and product data

HelloPharmacist combines public FDA and NLM records; we don’t author the underlying clinical facts. We identified 446 FDA-filed SPL label sets within the page’s selected clinical scope after exact ingredient or ingredient-combination matching and applicable route/form matching. The representative label is the starting point for the displayed reference monograph; the 12 largest stored in-scope SPL records, which may include that representative, are compared section by section, and the longest available version of each section is retained. Forms, routes, brands, labelers, product-listed strengths, and product-record counts are aggregated separately from ingredient-matched FDA NDC Directory records; package records listed above are associated with the linked SPL; and the normalized concept hierarchy comes from NLM RxNorm.

For canonical ingredient pages, bounded product-attributed indication and administration excerpts may be added to the AI evidence, and the generator is instructed to preserve available product, brand, route, and form qualifiers instead of treating one label as universal. Where a section is identified as AI-written, its plain-language text is generated from bounded label evidence. New draft drug pages remain in the admin review queue before first publication. PLx Pharma Inc is the representative DailyMed label linked for verification and dates; it is not the sole source used for the page.

This is general education, not medical advice — always consult your doctor or pharmacist about your medications and any medical condition. For the exact wording of the linked representative label, view that label on DailyMed; some displayed composite sections may come from other in-scope SPL labels. Learn how we use AI and our data sources & update cadence.