FDA-filed SPL labeling · retrieved through openFDA

Penicillin V Potassium

Penicillin V Potassium is an oral antibiotic used to treat mild to moderately severe bacterial infections — including strep throat, skin infections, and respiratory infections — and to prevent recurrence of rheumatic fever.

Brand names Beepen-VKBetapen-VKLedercillin VKPen-Vee KPenapar-VK +4 more
Drug class ⓘ Penicillin-class Antibacterial
Rx Forms 2 Routes Oral · Oropharyngeal
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 69 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 effectiveJul 17, 2024
Clinical labels in scope ⓘ69
AvailabilityRx
Earliest approval/marketing year ⓘ1958
FDA-listed product records ⓘ201
Boxed warningNone found in compared labels
How we combine label and product data →
✓No current FDA shortage listed · checked Sep 22, 2026
⭐ Penicillin V Potassium at a glance The quick version — the full detail is in the Patient Information Guide below.
💊
HelloPharmacist Editorial Team Bottom Line
Penicillin V Potassium is a well-established oral antibiotic for mild to moderately severe bacterial infections like strep throat, scarlet fever, and certain skin infections — and for preventing rheumatic fever from returning. Take every dose as directed and finish the full course. If you've ever had an allergic reaction to penicillin, do not take this medication — and seek emergency help immediately if you have any signs of a severe reaction while taking it.
How we write & review this content — our editorial policy →

📖 Penicillin V Potassium: Patient Information Guide

A plain-language walkthrough of Penicillin V Potassium — 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▾

Penicillin V Potassium is used to treat and prevent a range of bacterial infections. Here is the full set of supported uses:

  • Streptococcal infections (without bacteremia — without bacteria in the bloodstream): mild to moderate upper respiratory infections, strep throat, scarlet fever, and mild erysipelas (a skin infection)
  • Pneumococcal infections: mild to moderately severe respiratory tract infections
  • Staphylococcal infections (penicillin-sensitive strains only): mild skin and soft-tissue infections
  • Fusospirochetosis (Vincent's gingivitis and pharyngitis): mild to moderately severe infections of the mouth and throat
  • Prevention of rheumatic fever and chorea recurrence: long-term daily use to keep these conditions from coming back
  • Endocarditis prophylaxis: suggested by the American Heart Association and American Dental Association for patients with congenital heart disease or rheumatic or acquired valvular heart disease undergoing dental or upper respiratory tract procedures — not for patients at highest risk such as those with prosthetic heart valves

This medication should not be used for severe infections such as meningitis, pericarditis, or bacteremia (bacteria in the blood), which require more aggressive treatment.

⚙️How it works▾

Penicillin V Potassium kills bacteria by blocking their ability to build a cell wall. Bacteria need a strong outer wall to hold together — without it, they break apart and die. This action only happens while bacteria are actively multiplying, which is why finishing the full course matters. The potassium salt form resists breakdown by stomach acid better than penicillin G, making it well-suited for oral use.

Some bacteria produce an enzyme called penicillinase that destroys penicillin before it can work. Penicillin V Potassium has no effect on these strains. For staphylococcal infections especially, lab testing (culture and sensitivity) is important to confirm the bacteria will actually respond to this drug.

💊How it's taken▾

Penicillin V Potassium comes as a tablet or an oral liquid solution, both taken by mouth. It is generally taken multiple times a day — often every 6 to 8 hours — though the exact schedule depends on the type and severity of infection. It can be taken with or without food, but blood levels are slightly higher when taken on an empty stomach.

  • The oral solution must be mixed with water before use, stored in the refrigerator, and discarded after 14 days
  • For preventing rheumatic fever recurrence, it is typically taken twice a day on an ongoing basis
  • For endocarditis prevention before a procedure, it is taken as a dose before the procedure and a second dose hours later

Always follow your prescriber's exact instructions and finish every dose — stopping early can allow bacteria to come back or become resistant.

🤒Side effects — in detail▾

Most people tolerate Penicillin V Potassium well, but some side effects can occur:

  • Nausea
  • Vomiting
  • Stomach upset or discomfort
  • Diarrhea
  • Black hairy tongue (a harmless, temporary change in the tongue's appearance)
  • Skin rash, hives, or other allergic skin reactions
  • Fever or elevated eosinophils (a type of immune cell) — sometimes the only sign of a reaction

Serious reactions — including severe allergic reactions (anaphylaxis), throat swelling, and a dangerous gut infection from C. difficile bacteria — require prompt medical attention. Stop the medication and call for help right away if these occur.

⚠️Warnings & precautions▾
  • Severe allergic reactions (anaphylaxis): Rare but potentially life-threatening. Most likely in people with a prior penicillin allergy or allergy to multiple substances. Signs include difficulty breathing, throat swelling, and collapse. Call emergency services immediately.
  • Cross-reactivity with cephalosporins: Some people allergic to penicillin have also had serious reactions to cephalosporin antibiotics. Tell your doctor about any past antibiotic reactions.
  • C. difficile–associated diarrhea (CDAD): Antibiotics can disrupt gut bacteria, allowing C. difficile to overgrow and cause diarrhea — sometimes severe or even life-threatening colitis (colon inflammation). This can happen even up to two months after finishing the antibiotic. Report new or worsening diarrhea to your doctor promptly.
  • Antibiotic resistance: Use only for proven or strongly suspected bacterial infections to help preserve the drug's effectiveness over time.
🔀What it interacts with▾

The FDA label for Penicillin V Potassium does not specify particular drug, food, or supplement interactions in the supplied evidence.

    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▾
    • Penicillin allergy: Do not take this medication if you have ever had any allergic reaction to a penicillin antibiotic — this is an absolute contraindication
    • Cephalosporin allergy: Tell your doctor if you have reacted to cephalosporin antibiotics; cross-reactions are possible
    • Multiple allergies: People with a history of reacting to many different allergens face a higher risk of serious reactions to penicillin
    • Kidney problems: The drug is cleared more slowly in people with impaired kidney function and in newborns and young infants — dosing requires extra care in these groups
    • Prosthetic heart valves or high-risk heart conditions: Oral penicillin should not be used for endocarditis prevention in patients at particularly high risk (such as those with prosthetic valves or surgically constructed shunts)
    • Severe infections: This drug is not appropriate for acute severe infections like meningitis, pericarditis, or bacteremia — tell your doctor if your symptoms are severe or rapidly worsening
    📡Pharmacodynamics — effects in the body▾

    Penicillin V Potassium is bactericidal — meaning it actively kills bacteria rather than just slowing their growth. It works only during the stage when bacteria are actively multiplying. It is effective against a range of gram-positive bacteria including most streptococci, penicillin-sensitive staphylococci, and pneumococci, but it has no activity against bacteria that produce penicillinase or that are otherwise resistant.

    🔬Pharmacokinetics — how your body processes it▾

    Penicillin V Potassium is well absorbed when taken by mouth and resists breakdown by stomach acid — an advantage over penicillin G. Blood levels are slightly higher when taken on an empty stomach. Once absorbed, about 80% of the drug binds to proteins in the blood. It distributes widely into body tissues, with the highest concentrations in the kidneys, and is excreted rapidly in the urine in people with normal kidney function. Only about 25% of an oral dose is actually absorbed. In newborns, young infants, and people with kidney problems, the drug is cleared more slowly, so it stays in the body longer.

    📦How to store it▾

    Store at 20° to 25°C (68° to 77°F) . Dispense in a tight container as defined in the USP, with a child-resistant closure as required. Store dry powder at 20° to 25°C (68° to 77°F) .

    📄 Written from Penicillin V Potassium’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 →

    56

    Supplements & herbs that interact with Penicillin V Potassium

    56 supplements and herbal products have documented interactions with Penicillin V Potassium 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 · 3
    • Moderate · 42
    • Minor · 11
    ACTIVATED CHARCOAL Major ASARABACCA Major SIBERIAN COCKLEBUR Major ARISTOLOCHIA Moderate BACILLUS COAGULANS Moderate Bacillus Subtilis Moderate BIFIDOBACTERIUM ANIMALIS SUBSP. LACTIS Moderate BIFIDOBACTERIUM BIFIDUM Moderate +48 more
    Every supplement checked against Penicillin V Potassium — ranked by severity The full interaction hub: 3 major · 42 moderate · 11 minor · every one linked to its full report. Check Penicillin V Potassium 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

    Penicillin V Potassium 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 · 6
    • Moderate · 1
    BIOTIN Insignificant Depletion FOLIC ACID Insignificant Depletion RIBOFLAVIN Insignificant Depletion THIAMINE Insignificant Depletion VITAMIN B12 Insignificant Depletion VITAMIN B6 Insignificant Depletion VITAMIN K Moderate Depletion
    See the full Penicillin V Potassium 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 Penicillin V Potassium — the kind of thing our pharmacy team would talk through with you at the counter.

    What kinds of infections does Penicillin V Potassium actually treat? ▾
    It's used for mild to moderately severe bacterial infections — things like strep throat, scarlet fever, certain respiratory infections from pneumococcal bacteria, mild skin infections, and a mouth/throat infection called Vincent's angina. It's also used long-term to prevent rheumatic fever from coming back. It's not the right choice for severe infections like meningitis or a bloodstream infection — those need stronger, faster-acting treatment.
    Should I take it with food or on an empty stomach? ▾
    You can take it either way — it won't upset most people's stomachs badly. That said, your body actually absorbs slightly more of the medication if you take it on an empty stomach. If nausea is a problem for you, taking it with a small amount of food is a reasonable trade-off. Just try to keep to your regular schedule and take each dose at evenly spaced times throughout the day.
    What side effects should I watch out for? ▾
    The most common ones are stomach-related — nausea, vomiting, diarrhea, or general stomach upset. These are usually mild. A rarer but harmless one is 'black hairy tongue,' which sounds alarming but goes away after finishing the antibiotic. The one to take seriously is any sign of an allergic reaction: hives, rash, difficulty breathing, or swelling of the throat. That needs emergency care right away. Also, if you develop severe or watery diarrhea — even a week or two after finishing the course — call your doctor, as that can signal a gut infection caused by C. difficile bacteria.
    I've had a penicillin reaction before — is this safe for me? ▾
    No — if you've ever had an allergic reaction to any penicillin antibiotic, you should not take this medication. That's a firm contraindication. Make sure to tell your doctor and pharmacist about that history every time. Also mention if you've ever reacted to cephalosporin antibiotics (like cephalexin or amoxicillin-related drugs), since there can be overlap in who reacts to those.
    Do I really need to finish all the pills even if I feel better? ▾
    Yes, absolutely. It's very common to start feeling better a day or two in — but stopping early means some bacteria may survive and come back, potentially stronger and harder to treat. Finishing the full course is one of the most important things you can do to make sure the infection is completely cleared and to help prevent antibiotic resistance.
    I'm taking the liquid (oral solution) — anything special I should know? ▾
    Yes, a couple of things. The powder needs to be mixed with water before you use it — your pharmacist will usually do this for you. Once it's mixed, it must be kept in the refrigerator and thrown away after 14 days, even if there's some left. Give it a good shake before each dose to make sure the medication is evenly distributed. If you're unsure how to measure the dose, ask your pharmacist — an oral syringe is much more accurate than a kitchen spoon.
    Is Penicillin V Potassium available over the counter? ▾
    Penicillin V Potassium is dispensed by prescription according to its FDA labeling, so it isn't sold over the counter. Your prescriber and pharmacist will determine if it's appropriate for you.
    When was Penicillin V Potassium first available? ▾
    Penicillin V Potassium has been available in the United States since at least 1958, based on FDA approval history (Drugs@FDA) and product marketing records.
    Who makes Penicillin V Potassium? ▾
    Penicillin V Potassium is supplied by 27 manufacturers listed in the FDA NDC Directory, including PD-Rx Pharmaceuticals, Inc., NuCare Pharmaceuticals,Inc., A-S Medication Solutions.

    💬 Answers drafted from Penicillin V Potassium’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

    📊Penicillin V Potassium supplement interactions56 checked — ranked by severity 🌿Drug & Supplement CheckerPenicillin V Potassium vs. vitamins & herbs 💬Ask a PharmacistFree answer, usually < 24h 🔎NDC & pricing lookupFind Penicillin V Potassium NDCs & costs 🅰️Browse Drugs A–ZLook up any medication

    💊 How Penicillin V Potassium comes

    Penicillin V Potassium is available in 2 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 · Oropharyngeal
    Brands Penicillin V Potasium
    How this form is used
    What it may be used for
    • Penicillin V Potassium tablets treat mild to moderately severe streptococcal infections of the upper respiratory tract, including scarlet fever and erysipelas
    • Penicillin V Potassium tablets treat mild to moderately severe pneumococcal respiratory infections
    • Penicillin V Potassium tablets treat fusospirochetosis (Vincent's gingivitis and pharyngitis) — mild to moderately severe oropharyngeal infections
    • Penicillin V Potassium tablets are used to prevent recurrence of rheumatic fever and for endocarditis prophylaxis in eligible patients
    Important instructions
    • Penicillin V Potassium tablets are taken by mouth several times a day as directed by your prescriber — typically every 6 to 8 hours depending on the infection
    • Penicillin V Potassium tablets can be taken with or without food; taking on an empty stomach produces slightly higher drug levels
    • Take every dose as scheduled and complete the full prescribed course, even if symptoms improve early
    • For endocarditis prophylaxis, Penicillin V Potassium tablets are taken as a single dose before a procedure and a second dose hours later — follow your prescriber's exact instructions
    Available strengths 2 strengths
    250 mg 500 mg
    174 FDA-listed product records ⓘ

    Oral solution

    By mouth
    How this form is used
    What it may be used for
    • Penicillin V Potassium oral solution treats mild to moderately severe streptococcal infections, including strep throat and scarlet fever
    • Penicillin V Potassium oral solution treats mild to moderately severe pneumococcal respiratory infections
    • Penicillin V Potassium oral solution treats mild staphylococcal skin and soft-tissue infections (penicillin-sensitive strains only)
    • Penicillin V Potassium oral solution is used to prevent recurrence of rheumatic fever and chorea
    Important instructions
    • Penicillin V Potassium oral solution must be mixed with water before dispensing — do not add water until ready to dispense
    • Penicillin V Potassium oral solution should be stored in the refrigerator after mixing and discarded after 14 days
    • Shake the bottle well after adding water to ensure the powder is fully dissolved
    • Penicillin V Potassium oral solution can be taken with or without food; blood levels are slightly higher on an empty stomach
    Available strengths 2 strengths
    125 mg/5 mL 250 mg/5 mL
    25 FDA-listed product records ⓘ

    📊 Penicillin V Potassium across the U.S. market

    How Penicillin V Potassium 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.

    2
    Dose forms ⓘ
    27
    Manufacturers
    2
    Brand names
    201
    FDA-listed product records ⓘ
    1958
    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 (2) — bulk drug substance sold to compounders/manufacturers and multi-item kits. These aren’t counted in the dose-form total above.

    PD-Rx Pharmaceuticals, Inc.19%
    NuCare Pharmaceuticals,Inc.15%
    A-S Medication Solutions12%
    Remedyrepack Inc.11%
    Teva Pharmaceuticals USA, Inc.6%
    Bryant Ranch Prepack4%
    Other makers33%

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

    📈 How widely Penicillin V Potassium is used

    A general measure of how commonly Penicillin V Potassium 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 Penicillin V Potassium 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.

    451,965
    Medicaid prescriptions filled (Q1–Q4 2025)
    $5.1M gross Medicaid reimbursement (before mandatory rebates — net cost is lower)

    How commonly is Penicillin V Potassium prescribed? Of the 1,596 medications we measure, Penicillin V Potassium ranks #273 by Medicaid prescriptions — more than 83% of them.

    Where Penicillin V Potassium ranks among the drugs we measure · Q1–Q4 2025 · neighbors ±5
    Total prescriptions — #273 of 1,596
    #268 Adalimumab Injection 478,866 Rx #269 Terbinafine 478,667 Rx #270 Levofloxacin 474,527 Rx #271 Nortriptyline 455,288 Rx #272 Carbamazepine 452,754 Rx #273 Penicillin V Potassium 451,965 Rx #274 Viloxazine 451,086 Rx #275 Omega-3-Acid Ethyl Est... 450,937 Rx #276 Fentanyl 440,395 Rx #277 Formoterol / Mometason... 440,187 Rx #278 Ziprasidone 438,206 Rx

    Utilization by Penicillin V Potassium 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 500 mg oral tablet is the most-dispensed Penicillin V Potassium product — about 73% of these Medicaid prescriptions.

    penicillin V potassium 500 MG Oral Tablet Most dispensed

    328,000 Medicaid prescriptions (Q1–Q4 2025) 73% of Penicillin V Potassium prescriptions shown $3.3M gross reimbursement (before rebates) ≈ $10 per prescription (gross)

    Summed across the 11 of 167 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 834102

    penicillin V potassium 50 MG/ML Oral Solution

    83,042 Medicaid prescriptions (Q1–Q4 2025) 18% of Penicillin V Potassium prescriptions shown $1.3M gross reimbursement (before rebates) ≈ $15 per prescription (gross)

    Summed across the 2 of 13 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 834040

    penicillin V potassium 250 MG Oral Tablet

    28,725 Medicaid prescriptions (Q1–Q4 2025) 6% of Penicillin V Potassium prescriptions shown $346,321 gross reimbursement (before rebates) ≈ $12 per prescription (gross)

    Summed across the 9 of 91 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 834061

    penicillin V potassium 25 MG/ML Oral Solution

    12,198 Medicaid prescriptions (Q1–Q4 2025) 3% of Penicillin V Potassium prescriptions shown $198,651 gross reimbursement (before rebates) ≈ $16 per prescription (gross)

    Summed across the 2 of 8 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 834046

    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 Penicillin V Potassium, 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 24 of 279 listed Penicillin V Potassium NDCs with Medicaid activity.

    🔍 Compare Penicillin V Potassium products

    A representative set of FDA-listed product records for Penicillin V Potassium — 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 201 products — FDA National Drug Code Directory. See every product, package size and price: browse all 201 Penicillin V Potassium 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) Penicillin V Potassium RxCUI 7984 4 dose forms · 5 strengths
    1. Dose form (SCDF) Ophthalmic Solution RxCUI 377416 No current FDA listing
      Clinical drug / strength (SCD) potassium 3 MG/ML RxCUI 834182
    3. Dose form (SCDF) Oral Suspension RxCUI 373267 No current FDA listing
    4. Dose form (SCDF) Oral Tablet RxCUI 373266 In current FDA listings
      Clinical drug / strength (SCD) potassium 250 MG RxCUI 834061 potassium 500 MG RxCUI 834102

    Look up RxCUI 7984 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

    Beepen-VK Betapen-VK Ledercillin VK Pen-Vee K Penapar-VK Uticillin VK V-Cillin K Veetids Penicillin V Potasium

    🏭 Manufacturers & labelers

    PD-Rx Pharmaceuticals, Inc. 38 NuCare Pharmaceuticals,Inc. 30 A-S Medication Solutions 24 Remedyrepack Inc. 22 Teva Pharmaceuticals USA, Inc. 12 Bryant Ranch Prepack 9 RedPharm Drug, Inc. 8 Preferred Pharmaceuticals, Inc 8 RPK Pharmaceuticals, Inc. 6 Hikma Pharmaceuticals USA Inc. 6 Proficient Rx LP 5 Aurobindo Pharma Limited 4 Preferred Pharmaceuticals Inc. 4 Chartwell RX, LLC 4 QPharma Inc 3 Redpharm Drug 3 NuCare Pharmaceuticals, Inc. 2 NorthStar Rx LLC 2 Rising Health, LLC 2 Sandoz Inc 2 Pharmasource Meds LLC 1 Preferred Pharmaceuticals, Inc. 1 DirectRX 1 Direct_Rx 1

    …and 3 more on the FDA NDC directory.

    RxNorm drug class

    Penicillin V Potassium belongs to the Penicillin-class Antibacterial class.

    Pharmacologic class Penicillin-class Antibacterial
    Drug family (ATC) Beta-lactamase sensitive penicillins

    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 Jul 17, 2024
    🏭
    Forms, brands & labelersAggregated from ingredient-matched FDA National Drug Code Directory product records for Penicillin V Potassium.
    📈
    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 Penicillin V Potassium after exact ingredient or ingredient-combination matching and applicable route/form matching
    Clinical labels in scope
    69
    NDC products indexed
    201
    Distinct labelers/manufacturers represented
    27
    Linked representative label ⓘ
    NuCare Pharmaceuticals,Inc.
    Linked label effective
    Jul 17, 2024
    Composite sections available
    10
    Linked SPL Set ID
    ada3be87-2cdb-75f7-e053-2995a90aa95b
    Linked SPL Document ID
    1d7676bc-ea2e-5cb2-e063-6394a90ac2ca
    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 69 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. NuCare Pharmaceuticals,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.