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Unisom PM Pain Nighttime Sleep Aid and Pain Reliever Acetaminophen and Diphenhydramine Hydrochloride 325 mg; 50 mg Tablet, Film Coated, 15-count — NDC 41167-0040-02 package photo
Label image from the product's FDA listing (DailyMed) — may show a different pack size or an older label revision.

Unisom PM Pain Nighttime Sleep Aid and Pain Reliever Acetaminophen and Diphenhydramine Hydrochloride 325 mg; 50 mg Tablet, Film Coated, 15-count — NDC 41167-0040-2 (Billing 41167-0040-02)

by Chattem, Inc. · 1 BOTTLE in 1 CARTON / 15 TABLET, FILM COATED in 1 BOTTLE

This is a package of 15 tablets of Unisom PM Pain Nighttime Sleep Aid and Pain Reliever Acetaminophen and Diphenhydramine Hydrochloride 325 mg; 50 mg Tablet, Film Coated from Chattem, Inc., marketed since Dec 2009 and currently FDA-listed. It is the main listing for this product, which comes in 2 package sizes.

NDC 41167-0040-02
🏷️ FDA NDC (as labeled) 41167-0040-2 billing pads the package segment with a zero
This package
Contains15-count Pack sizes2 compare ↓
Main listing for product 41167-0040 · Also comes in: 30 tablets 41167-0040-4
OTC On market Non-controlled ⇄ Compare with another NDC
🗂️ FDA directory synced Oct 1, 2026 · this listing last changed Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →

This page is curated, coded, and maintained by

Compiled from public FDA, CMS, DailyMed, NADAC, and related drug data sources. Editorial policy

Identity & classification

Regulatory identifiers FDA, NLM and CMS codes for this package

FDA NDC (as labeled) 41167-0040-2
Product NDC 41167-0040
11-digit billing NDC 41167004002
RxCUI 1093075, 1093077
UNII 362O9ITL9D, TC2D6JAD40
Application # M013
SPL Set ID 451daeeb-88a9-44b1-9a2d-1ff0b0ec41cb
Established class (EPC) Histamine-1 Receptor Antagonist
Mechanism of action Histamine H1 Receptor Antagonists
DEA schedule Non-controlled
Marketing category OTC MONOGRAPH DRUG
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2009-12-01
Route ORAL
Dosage form TABLET, FILM COATED
Substance ACETAMINOPHEN; DIPHENHYDRAMINE HYDROCHLORIDE

Drug-database identifiers Medi-Span GPI and First Databank GCN / HICL / AHFS classification

GPI-14 90979902452910
GPI class Gold Bond Extra Strength
Quick answers
  • GPI-14 (Medi-Span): 90979902452910
  • RxCUI (RxNorm): 1093075
Why two NDCs? The FDA registers this code as 41167-0040-2 — a 5-4-1 layout, and that's what's printed on the package and shown on DailyMed. For insurance claims, every NDC is standardized to a uniform 11-digit 5-4-2 format by adding a zero to the package segment → 41167-0040-02. Same drug, same package — only the format differs.
Where does this data come from?
Identifiers from the FDA openFDA NDC Directory and Structured Product Labeling; RxCUI from RxNorm (NLM); GPI from Medi-Span; GCN / HIC / AHFS / legend from First Databank.

RxNorm drug class

This medicine belongs to the Anilides class.

Drug family (ATC) Anilides
Where does this data come from?
Therapeutic classes from RxNorm RxClass (U.S. National Library of Medicine) — Established Pharmacologic Class (FDA), ATC drug family (WHO) and mechanism of action, matched by this product’s RxCUI.

Clinical

📖 About the active ingredient: Acetaminophen; Diphenhydramine Hydrochloride MedlinePlus · NLM
General information about the ingredient itself — the description of this specific product follows below.

Acetaminophen is used to relieve mild to moderate pain and to reduce fever. Acetaminophen is in a class of medications called analgesics (pain relievers) and antipyretics (fever reducers). It works by changing the way the body senses pain and by cooling the body.

Read the full MedlinePlus article ↗
🧪 What is this product?

Unisom PM Pain is an over-the-counter oral tablet that combines two active ingredients. Acetaminophen is typically used as a pain reliever and fever reducer. Diphenhydramine hydrochloride is an antihistamine commonly used to promote drowsiness and is included in this product to aid sleep. This combination is designed for nighttime use when someone may want both pain relief and sleep support.

Supplement & herbal interactions

🌿 Drug–supplement interaction checker →
Where does this data come from?
Plain-language summary from MedlinePlus (U.S. National Library of Medicine); supplement & herbal interactions and nutrient depletion data from the Natural Medicines database; our full guide is HelloPharmacist editorial content.

Pricing

A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.

Price systemPer eachPer package
Retail pharmacies payNADAC · weekly Not in the retail survey — common for institutional, discontinued, or low-volume packs.
Medicaid paysCMS SDUD · 12 mo No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data.
Medicare drug plans payPart D · quarterly No Part D plan price is available for this NDC in our data.
ℹ️
No price is published for this exact package yet. CMS surveys NADAC per package size, so a different pack of the same drug often has one.
Try another pack size: 30 tablets
Where does this data come from?
NADAC (National Average Drug Acquisition Cost) is the CMS weekly pharmacy-acquisition-cost survey — what pharmacies pay. ASP (Average Sales Price) is the CMS Medicare Part B drug-payment file, published quarterly. Medicaid pays is computed by us from CMS State Drug Utilization Data (total reimbursed ÷ units, trailing 12 months) — gross of rebates and inclusive of dispensing fees, so it reflects what Medicaid paid, not an acquisition cost. Medicare drug plans pay is the median negotiated point-of-sale unit cost across plans listing this NDC in the CMS quarterly Prescription Drug Plan pricing files, before rebates. The VA pays is the federal contract price (FSS, and the statutory Big 4 ceiling where listed) from the VA National Acquisition Center pharmaceutical price file. All are free public government data; each measures a different payer, so the figures are not directly comparable.

Packaging — all sizes for this product

Package NDCDescription Marketing startMarketing endStatus
41167-0040-02 You're viewing this Main listing 1 BOTTLE in 1 CARTON / 15 TABLET, FILM COATED in 1 BOTTLE 2009-12-01 — Active
41167-0040-04 41167-0040-4 1 BOTTLE in 1 CARTON / 30 TABLET, FILM COATED in 1 BOTTLE 2009-12-01 — Active

Pack size FAQ

What quantity is in this package?
This is a 15-count package — 1 bottle in 1 carton / 15 tablet, film coated in 1 bottle.
How does this package differ from NDC 41167-0040-04?
Both are Unisom PM Pain Nighttime Sleep Aid and Pain Reliever Acetaminophen and Diphenhydramine Hydrochloride 325 mg; 50 mg Tablet, Film Coated — the drug itself is identical. This page's package is the 15-count one, while NDC 41167-0040-04 is the 30 tablets package.
What NDC number is used to bill for this package of Unisom PM Pain Nighttime Sleep Aid and Pain Reliever Acetaminophen and Diphenhydramine Hydrochloride 325 mg; 50 mg Tablet, Film Coated?
Use the 11-digit billing form listed in the identifiers section of this page. Pharmacy and medical claims use the 11-digit form; the FDA label may print a shorter form of the same code.

Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Unisom PM Pain Nighttime Sleep Aid and Pain Reliever 325 mg/1; 50 mgthis 41167-0040-02 Chattem, 15 tablets — — FDA listed —
About this product: other versions of the same ingredient, strength and form are listed above, least expensive first, with FDA equivalence ratings where available.
Where does this data come from?
Equivalents are other NDCs of the same ingredient, form and route from the openFDA NDC Directory, ranked least-expensive-first by NADAC. Therapeutic-equivalence (AB) ratings come from the FDA Orange Book; biologics use the FDA Purple Book for biosimilar & interchangeable status.

Availability & generic status

🏛️
2009
On the market since
Dec 2009
📍
2026
Currently FDA-listed
17 years listed
🔒
·
No generic listed yet
brand only
ℹ️No FDA-approved generic found

We did not find an FDA-approved generic match for this exact strength, form and route.

Where does this data come from?
Patents and exclusivity from the FDA Orange Book (small-molecule drugs), refreshed from public FDA data. Generic launch timing is an estimate, not a guarantee.

What it looks like

Color white
ShapeOval
ImprintUNISOM;PM;PAIN
Size17 mm
ScoringScored — splits in 2
One label can cover several strengths, so colors may be combined — always confirm a loose pill against the dispensed prescription label or a pharmacist.
Where does this data come from?
Physical description (imprint, shape, color, scoring, coating) from this product’s FDA Structured Product Labeling (SPL), mirrored from DailyMed / openFDA.

Inactive Ingredients / Excipients

Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.

💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.

  • UNII OP1R32D61U
    Microcrystalline cellulose is a purified form of cellulose, a natural fiber from plant sources. It acts as a binder and filler in tablets and capsules, helping hold ingredients together and give the medicine its shape and size.
  • UNII M28OL1HH48
    Croscarmellose sodium is a plant-based substance derived from cellulose. It acts as a disintegrant, helping tablets and capsules break down quickly in the digestive system so the medicine can be absorbed.
  • UNII O7TSZ97GEP
    A mineral compound that serves as a filler and binding agent in tablets and capsules. It adds bulk to the medicine and helps hold ingredients together during manufacturing.
  • UNII H3R47K3TBD
    FD&C Blue No. 1 is a synthetic blue dye approved for use in foods and medicines. It serves as a colorant to give the medication its distinctive appearance and help with product identification.
  • UNII 9XZ8H6N6OH
    A plant-based cellulose derivative used as a binder to hold tablet ingredients together, a thickener in liquids, and a coating agent to control how fast the medicine dissolves.
  • UNII 3NXW29V3WO
    Hypromellose is a plant-based thickener made from cellulose. It's used in medicines as a binder to hold ingredients together, a coating for tablets, and a thickener for liquids.
  • UNII N6K5787QVP
    Light mineral oil is a clear, odorless liquid derived from petroleum. In medicines, it acts as a lubricant and emollient to help the product spread smoothly and improve texture.
  • UNII 9B9691B2N9
    Magnesium silicate is a mineral compound used in tablets and capsules as a glidant and anti-caking agent. It helps powder ingredients flow smoothly during manufacturing and prevents clumping in the final product.
  • UNII 70097M6I30
    Magnesium stearate is a salt made from magnesium and stearic acid, a fatty substance. It's used in tablets and capsules as a lubricant and glidant to help ingredients flow smoothly during manufacturing and prevent sticking.
  • UNII U725QWY32X
    Povidone K30 is a synthetic polymer made from petroleum. It acts as a binder to hold tablet ingredients together and as a disintegrant to help the tablet break apart in the stomach so the medicine can be absorbed.
  • UNII ETJ7Z6XBU4
    Silicon dioxide is a naturally occurring mineral used as a glidant and anti-caking agent. It helps powder ingredients flow smoothly and prevents clumping during manufacturing and storage.
  • UNII 5856J3G2A2
    A starch-based powder made from potatoes and processed with sodium. It acts as a disintegrant, helping the tablet or capsule break apart quickly in the stomach so the medicine can be absorbed.
  • UNII O8232NY3SJ
    A plant-based carbohydrate derived from corn kernels. It acts as a filler to add bulk, a binder to hold ingredients together, and a disintegrant to help the tablet break apart in your stomach for absorption.
  • UNII 4ELV7Z65AP
    Stearic acid is a fatty acid derived from plant or animal sources. It acts as a binder and lubricant in tablets and capsules, helping them hold together and flow smoothly during manufacturing.

14 inactive ingredients listed in the exact product block matched to this NDC.

The official label also statesblue 1 lake, croscarmellose sodium, dicalcium phosphate, hydroxypropylcellulose, hypromellose, magnesium silicate, magnesium stearate, microcrystalline cellulose, mineral oil, pregelatinized corn starch, PVP, silica, sodium carboxymethyl starch, stearic acid (283-056)

Label-section wording can be broader than the structured product block and may mention additional formulation ingredients.

Where does this data come from?
Data sourced from official FDA Structured Product Labeling (SPL) via DailyMed — ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.

Inactive ingredient FAQ

Are inactive ingredients the same for every manufacturer?
No. Inactive ingredients can differ by manufacturer, dosage form, strength, and package / product version.
Why might an inactive ingredient be missing?
Some SPLs do not provide a complete structured inactive-ingredient list, and older or unusual labels may only include the information in narrative text.
Can inactive ingredients matter?
Yes. They can matter for allergies, intolerances, dyes, gluten / lactose concerns, preservatives, and formulation differences — but confirm with a pharmacist or the manufacturer when it’s clinically important.

Manufacturer & labeler

LabelerChattem, Inc.
FDA applicationM013 (OTC MONOGRAPH DRUG)
Labeler code41167
First marketedDec 2009
Product typeHuman Otc Drug
Portfolio157 products on file
The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).
Where does this data come from?
Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.

FDA label — Drug Facts FDA SPL

The complete FDA label for this product — the official Drug Facts labeling, verbatim, section by section. Jump with a chip, search within the label, or expand everything.
🎯 Indications and Usage ⏱️ Dosage and Administration ⚠️ Warnings 🧪 Active Ingredient 🧪 Inactive Ingredients 🎯 Purpose 📄 Do Not Use 📄 Ask a Doctor Before Use If 📄 Ask a Doctor or Pharmacist Before Use If 📄 When Using This Product 📄 Stop Use and Ask a Doctor If 🤰 If Pregnant or Breast-Feeding 📄 Keep Out of Reach of Children 📄 Package Label / Principal Display Panel
🎯 Indications and Usage 16 words ▾

Uses for the temporary relief of occasional headaches and minor aches and pains with accompanying sleeplessness

⏱️ Dosage and Administration 70 words ▾

Directions • do not take more than directed (see overdose warning ) adults and children 12 years and older: • take 1 caplet at bedtime • do not take more than 1 caplet of this product in 24 hours children under 12 years: do not use this adult product in children under 12 years of age, this will provide more than the recommended dose (overdose) and may cause liver damage

⚠️ Warnings ~1 min read ▾

Warnings Liver warning: This product contains acetaminophen. Severe liver damage may occur if you take more than 4,000 mg of acetaminophen in 24 hours with other drugs containing acetaminophen 3 or more alcoholic drinks every day while using this product Do not use with any other drug containing acetaminophen (prescription or nonprescription). If you are not sure whether a drug contains acetaminophen, ask a doctor or pharmacist. in children under 12 years of age with any other product containing diphenhydramine, even one used on skin if you have ever had an allergic reaction to this product or any of its ingredients Ask a doctor before use if you have liver disease a breathing problem such as emphysema or chronic bronchitis trouble urinating due to an enlarged prostate gland glaucoma Ask a doctor or pharmacist before use if you are taking the blood thinning drug warfarin taking sedatives or tranquilizers When using this product drowsiness will occur avoid alcoholic drinks do not drive a motor vehicle or operate machinery Stop use and ask a doctor if sleeplessness persists continuously for more than 2 weeks.

Insomnia may be a symptom of serious medical illness. pain gets worse or lasts for more than 10 days fever gets worse or lasts for more than 3 days redness or swelling is present new symptoms occur These could be signs of a serious condition. If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children.

O verdose warning: Taking more than the recommended dose (overdose) may cause liver damage. In case of overdose, get medical help or contact a Poison Control Center right away. Quick medical attention is critical for adults as well as for children even if you do not notice any signs or symptoms.

🧪 Active Ingredient 17 words ▾

Active ingredients (in each caplet) Acetaminophen 325 mg

Active ingredients (in each caplet) Diphenhydramine HCl 50 mg

🧪 Inactive Ingredients 30 words ▾

Inactive ingredients blue 1 lake, croscarmellose sodium, dicalcium phosphate, hydroxypropylcellulose, hypromellose, magnesium silicate, magnesium stearate, microcrystalline cellulose, mineral oil, pregelatinized corn starch, PVP, silica, sodium carboxymethyl starch, stearic acid (283-056)

🎯 Purpose 6 words ▾

Purposes Pain reliever

Purposes Nighttime sleep-aid

📄 Do Not Use 61 words ▾

Do not use with any other drug containing acetaminophen (prescription or nonprescription). If you are not sure whether a drug contains acetaminophen, ask a doctor or pharmacist. in children under 12 years of age with any other product containing diphenhydramine, even one used on skin if you have ever had an allergic reaction to this product or any of its ingredients

📄 Ask a Doctor Before Use If 28 words ▾

Ask a doctor before use if you have liver disease a breathing problem such as emphysema or chronic bronchitis trouble urinating due to an enlarged prostate gland glaucoma

📄 Ask a Doctor or Pharmacist Before Use If 20 words ▾

Ask a doctor or pharmacist before use if you are taking the blood thinning drug warfarin taking sedatives or tranquilizers

📄 When Using This Product 19 words ▾

When using this product drowsiness will occur avoid alcoholic drinks do not drive a motor vehicle or operate machinery

📄 Stop Use and Ask a Doctor If 60 words ▾

Stop use and ask a doctor if sleeplessness persists continuously for more than 2 weeks. Insomnia may be a symptom of serious medical illness. pain gets worse or lasts for more than 10 days fever gets worse or lasts for more than 3 days redness or swelling is present new symptoms occur These could be signs of a serious condition.

🤰 If Pregnant or Breast-Feeding 10 words ▾

If pregnant or breast-feeding, ask a health professional before use.

📄 Keep Out of Reach of Children 6 words ▾

Keep out of reach of children.

📄 Package Label / Principal Display Panel 17 words ▾

PRINCIPAL DISPLAY PANEL Unisom ® PM PAIN SLEEPCAPS TM 30 Caplets Unisom® PM PAIN SLEEPCAPSTM 30 Caplets

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗

Reported adverse events (FAERS)

Read carefully: FAERS reports are voluntary and unverified. Counts are not incidence, do not establish causation, are subject to reporting bias, and cannot be used to compare one drug to another. Shown for signal context only. Reports for Acetaminophen and Diphenhydramine Hydrochloride — the ingredient across all brands.

Top reported reactions

Fatigue460
Nausea369
Diarrhoea299
Dizziness263
Pain248
Insomnia246
Headache244

Age at onset

Neonate1
Child4
Adolescent12
Adult499
Elderly423

Reporter sex

4,809 reports
Male · 34%
Female · 66%
Unknown · 0%

Serious outcomes

Hospitalization1,402
Death589
Life-threatening114
Disabling83
Reports over time (by year) — tap or hover for the count & year
2019 2021 2023 2026 307 0
Most recent year is provisional (FAERS lags ~3 months).
Where does this data come from?
Adverse-event reports from the FDA Adverse Event Reporting System (FAERS) via openFDA. FAERS reports are voluntary and unverified — counts are not incidence and don’t establish causation.

About this NDC listing & data coverage

Over-the-counter (OTC) product
What data is (and isn’t) available for this NDC — tap to expand
NDC identity (package / product / labeler codes) ✓ Available
Labeler ✓ Available
Product & package description ✓ Available
Marketing category & status ✓ Available
Active ingredient / dosage form / route ✓ Available
FDA label (SPL via DailyMed) ✓ Available
Package photos ✓ Available
Inactive ingredients (structured) ✓ Available
NADAC pharmacy acquisition price (CMS) — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey.
Orange Book / therapeutic-equivalence data — Not published for this NDC Applies only to products approved under an NDA/ANDA; many listings are out of scope.
HCPCS J-code billing crosswalk — Not published for this NDC Most self-administered / retail products have no J-code — that is normal.
Medicaid utilization (CMS SDUD) — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold.
“Not published” reflects what the public FDA / CMS / NLM sources provide for this exact package code — it is a property of the data feeds, not a judgment about the product.

Questions about this listing

Is this NDC FDA-approved?
An NDC listing does not by itself establish FDA approval — the NDC Directory records that a product is listed with FDA, not that it was reviewed and approved. This listing's marketing category is "Otc Monograph Drug". Products approved under an application carry an NDA, ANDA, or BLA number.
Why is there no price listed?
The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.
Is the NDC printed on the package the same as the 11-digit billing NDC?
Yes, they identify this exact package in different formats. The form printed on the packaging and shown on DailyMed is the one the FDA registered. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero and the dashes are dropped. The Identity section at the top of this page lists each form of this code.
Is this package still being marketed?
Yes, per the latest FDA NDC Directory data on this page: this package is listed as actively marketed, with no marketing end date reported by Chattem, Inc.. Listing status can change — the directory data on this page refreshes weekly.
Does this product come in other package sizes?
Yes — the FDA directory lists 1 other package presentation of this same product, including 30 tablets (41167-0040-04). Each has its own NDC and its own page — see the package list near the top of this page.
Who lists this product with the FDA?
Chattem, Inc. is the labeler of record for this NDC — the company under whose FDA-assigned code the package is listed. The labeler may be the manufacturer itself or a distributor marketing the product under its own code.
Do I need a prescription for this product?
This NDC is listed with FDA as an over-the-counter product, so it does not require a prescription. Follow the package directions, and ask your pharmacist if you are unsure whether it is right for you.
This page identifies an FDA-listed package (the NDC) and reports public regulatory and pricing data about the listing. It is reference information, not a medical recommendation — talk to your pharmacist or prescriber about your own medication.
Where does this data come from?
Listing facts (marketing category, packager status, marketing dates) from the FDA openFDA NDC Directory; label availability from DailyMed; pricing coverage from CMS NADAC; equivalence scope from the FDA Orange Book.
← 41167-0039-00 · Chattem, 41167-0061-00 · Chattem, →
For educational and professional reference only — not medical advice. Pricing reflects published NADAC and CMS ASP (free public data) and may differ from your acquisition cost; always verify before billing or dispensing.