Home › NDC Lookup › Ingredients › Zinc Oxide › 72203-0016-01
🧴image loading
(from DailyMed)

Perfect Sunscreen SPF 50 Sheer Mineral Zinc Oxide .12 g/mL Lotion

by Bluemercury, Inc. · 1 BOTTLE in 1 CARTON (72203-016-01) / 50 mL in 1 BOTTLE
NDC 72203-0016-01
🏷️ FDA NDC (as labeled) 72203-016-01 billing pads the product segment with a zero
OTC On market Non-controlled
🗂️ Data synced 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

⚠️
Other active recalls for Zinc Oxide (different manufacturers) — 6 · tap to view
These affect other manufacturers’ products for the same ingredient — not necessarily the exact NDC on this page.
Class II · Oct 31, 2025 — cGMP deviations (Blossom Pharmaceuticals) · FDA recall D-0212-2026
Class II · Oct 31, 2025 — cGMP deviations (Blossom Pharmaceuticals) · FDA recall D-0206-2026
Class II · Oct 31, 2025 — cGMP deviations (Blossom Pharmaceuticals) · FDA recall D-0202-2026
Class II · Oct 31, 2025 — cGMP deviations (Blossom Pharmaceuticals) · FDA recall D-0207-2026
Class II · Oct 31, 2025 — cGMP deviations (Blossom Pharmaceuticals) · FDA recall D-0209-2026
Class II · Oct 31, 2025 — cGMP deviations (Blossom Pharmaceuticals) · FDA recall D-0208-2026
Each entry is an official FDA enforcement report — look up any recall number in the FDA recall database ↗

🆔 Identity & classification

FDA NDC (as labeled) 72203-016-01
Product NDC 72203-016
11-digit billing NDC 72203001601
UNII SOI2LOH54Z
Application # M020
SPL Set ID d8f483ff-b990-40c5-b5b8-00065051ae7e
DEA schedule Non-controlled
Marketing category OTC MONOGRAPH DRUG
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2022-04-15
Route TOPICAL
Dosage form LOTION
Substance ZINC OXIDE
Why two NDCs? The FDA registers this code as 72203-016-01 — a 5-3-2 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 product segment → 72203-0016-01. 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.

🏭 Manufacturer & labeler

LabelerBluemercury, Inc.
FDA applicationM020 (OTC MONOGRAPH DRUG)
Labeler code72203
First marketedApr 2022
Product typeHuman Otc Drug
Portfolio2 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.

🩺 Clinical

🧪 What is this product?

Perfect Sunscreen SPF 50 Sheer Mineral Zinc Oxide is a lotion applied to the skin to help protect against sunburn. Zinc oxide is a mineral ingredient that functions as a UV filter, reflecting and scattering ultraviolet rays from the sun. This product is marketed as an over-the-counter sunscreen under FDA's monograph rule for sunscreen drugs.

Supplement & herbal interactions

Some supplements/herbs that may interact with Zinc oxide (OTC drug) — tap one for details:

Dimethylsulfoxide (dmso)Moderate Turpentine OilModerate AlchemillaMinor
🌿 Every supplement checked against Zinc oxide (OTC drug) (3 interactions) — ranked by severity →
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.

🧪 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 9E8X80D2L0
    A synthetic form of vitamin E used as an antioxidant and preservative in medications. It helps prevent the active ingredients from degrading when exposed to oxygen or light.
  • UNII A9EJ3J61HQ
    A synthetic liquid derived from benzoic acid and long-chain alcohols. It functions as a solvent and penetration enhancer in topical formulations, helping active ingredients dissolve and absorb into the skin.
  • UNII 344S277G0Z
    Allantoin is a naturally derived compound that helps soften and soothe skin. In medicines, it works as a skin-conditioning agent and may help support wound healing and reduce irritation in topical formulations.
  • UNII B423VGH5S9
    A natural fruit ingredient derived from apples, used as a flavoring agent and sweetener to improve taste and palatability of the medicine.
  • UNII 2X51AD1X3T
    A fermented grain-derived polysaccharide used as a thickening and stabilizing agent in liquid formulations to improve texture and help maintain consistent suspension of active ingredients.
  • UNII 2EH13UN8D3
    A synthetic compound used as a solvent and penetration enhancer in topical formulations. It helps dissolve active ingredients and allows them to penetrate the skin more effectively.
  • UNII 00YIU5438U
    Caprylyl glycol is a clear liquid derived from coconut oil. In medicines, it acts as a humectant to retain moisture, a preservative booster to prevent microbial growth, and a solvent to help dissolve or mix other ingredients.
  • UNII I835H2IHHX
    A waxy substance derived from plant oils, used as an emulsifier and solubilizer to help mix oil and water ingredients together and keep them blended throughout the product's shelf life.
  • UNII 936JST6JCN
    Cetyl alcohol is a waxy, fatty substance derived from plant or animal sources. It acts as an emulsifier and thickener in medicines, helping blend oil and water components and giving products a smooth, creamy texture.
  • UNII 147D247K3P
    Ethylhexylglycerin is a synthetic preservative used to prevent bacteria and mold from growing in medicines and personal care products. It helps keep the product safe and stable throughout its shelf life.
  • UNII 1K09F3G675
    Ferric oxide red is an inorganic iron compound used as a colorant in medicines. It gives tablets, capsules, or other dosage forms a red or reddish tint for identification and appearance.
  • UNII PDC6A3C0OX
    Glycerin is a clear, thick liquid derived from plant oils or fats. It acts as a humectant to retain moisture, a sweetener, and a solvent in medications.
  • UNII 230OU9XXE4
    A waxy substance made from glycerin and stearic acid that acts as an emulsifier to blend oily and watery ingredients together. It also helps thicken and stabilize the medicine's texture.
  • UNII W2ZU1RY8B0
    A plant extract from green tea leaves. It's used as an antioxidant ingredient to help preserve the medicine and maintain its stability during storage.
  • UNII KEH0A3F75J
    Hexylene glycol is a clear liquid alcohol used as a solvent and preservative in medicines. It helps dissolve other ingredients and keeps the product stable during storage.
  • UNII M1SLX00M3M
    Isoamyl laurate is a synthetic ester made from isoamyl alcohol and lauric acid. It functions as an emollient and lubricant in topical formulations to help smooth and soften the skin.
  • UNII 19AH1RAF4M
    A plant extract from lavender flowers used as a flavoring and fragrance agent in medicines. It adds taste and aroma to make the product more pleasant to take.
  • UNII 9YT4B71U8P
    A plant extract from lavender flowers used as a flavoring and fragrance agent in medicines. It adds taste or aroma to improve how the product smells and tastes.
  • UNII 24WE03BX2T
    Levomenol is a naturally derived alcohol compound used as a skin-conditioning and anti-inflammatory agent in topical formulations. It helps soothe and protect the skin while improving product texture and absorption.
  • UNII C9H2L21V7U
    A fat derived from coconut or palm oil containing shorter fatty acid chains. It serves as a solvent and carrier to help dissolve or suspend active ingredients, improving absorption and stability in liquid formulations.
  • UNII N8F53B3R4R
    A synthetic humectant and solvent derived from propane. It draws and holds moisture in the formulation, helping keep the medicine stable and improving texture or flow in liquid and semi-solid products.
  • UNII OT38R0N74H
    PEG-75 stearate is a synthetic compound made by combining polyethylene glycol with stearic acid. It acts as an emulsifier and surfactant to help mix oils and water in the medicine and improve how the product dissolves and absorbs in the body.
  • UNII HIE492ZZ3T
    Phenoxyethanol is a synthetic preservative and antimicrobial agent used to prevent bacterial and fungal growth in medicines and cosmetic products, extending shelf life and maintaining product safety.
  • UNII 0F897O3O4M
    A naturally occurring alcohol derived from plants or synthesized chemically. It functions as a preservative and flavoring agent in medicines, helping prevent microbial growth and add pleasant taste to oral products.
  • UNII 9229XJ4V12
    A synthetic emulsifier made from glycerin and fatty acids. It helps blend oil and water-based ingredients in formulations, keeping them mixed and preventing separation.
  • UNII 687U3PEB2Y
    A complex emulsifier made from glycerin and fatty acids. It helps blend oil and water-based ingredients together and improves the texture and stability of creams, lotions, and other formulated products.
  • UNII 8ZQ0AYU1TT
    Pullulan is a natural polysaccharide, a type of carbohydrate made from yeast. It acts as a binder and film-former to hold tablet ingredients together and create protective coatings on capsules.
  • UNII 5G06TVY3R7
    Rutin is a plant-derived compound that acts as an antioxidant in medicines. It helps protect the product from degradation during storage and may improve stability.
  • 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 55X04QC32I
    A strong alkaline chemical used to adjust and maintain the pH balance of liquid medicines. It helps keep the medicine stable and ensures it stays effective during storage.
  • UNII GW89575KF9
    Squalane is a lightweight oil derived from plant sources or synthesized. It acts as an emollient and lubricant in formulations, helping ingredients blend smoothly and improving product texture and spreadability.
  • UNII L0Q8IK9E08
    A synthetic compound made from stearic acid and polyethylene glycol. It acts as an emulsifier and solubilizer, helping mix oil and water-based ingredients and keeping them blended throughout the medicine's shelf life.
  • UNII 3W1JG795YI
    Sunflower oil is a natural vegetable oil derived from sunflower seeds. It serves as a solvent, lubricant, and carrier in medicines, helping dissolve active ingredients and improve how the medication flows and absorbs in the body.
  • UNII 5EHL50I4MY
    A sodium salt compound used as a chelating agent in medicines. It binds to metals and minerals to improve stability, prevent discoloration, and help the medication stay effective longer.
  • UNII R0ZB2556P8
    Tocopherol is a form of vitamin E derived from plant oils. It acts as an antioxidant in medicines to prevent oils and fats from breaking down and spoiling during storage.
  • UNII 059QF0KO0R
    Water is a liquid solvent that dissolves and mixes ingredients together in liquid medicines, syrups, and injections. It helps distribute the active drug evenly throughout the product.
  • UNII TTV12P4NEE
    Xanthan gum is a thickening and stabilizing ingredient made from fermented corn or other sugars. It's added to medicines to improve texture, prevent separation of liquids and solids, and help the product stay consistent.

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

The official label also statesWater, Caprylic/Capric Triglyceride, Squalane, Isoamyl Laurate, Butyloctyl Salicylate, Glycerin, Jojoba Esters, Methylpropanediol, Cetyl Alcohol, Glyceryl Stearate, Silica, Tocopherol, Tocopheryl Acetate, Camellia Sinensis Leaf Extract, Lavandula Angustifolia (Lavender) Flower/Leaf/Stem Extract, Lavandula Angustifolia (Lavender) Flower Extract, Helianthus Annuus (Sunflower) Seed Oil, Pyrus Malus (Apple) Fruit Extract, Allantoin, Bisabolol, Rutin, Lecithin, Hydrogenated Lecithin, Lysolecithin, Caprylyl Glycol, Sclerotium Gum, Iron Oxides, Phenylpropanol, Pullulan, Xanthan Gum, C12-15 Alkyl Benzoate, Polyglyceryl-4 Diisostearate/Polyhydroxystearat e/Sebacate, Polyglyceryl-2 Dipolyhydroxystearate, Ceteth-20, Steareth-20, Tetrasodium Glutamate Diacetate, Phenoxyethanol, PEG-75 Stearate, Ethylhexylglycerin, Hexylene Glycol, Sodium Hydroxide

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.

💲 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 gPer 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.
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.

🔁 Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Perfect Sunscreen SPF 50 Sheer Mineral .12 g/mLthis 72203-0016-01 Bluemercury, 1 bottle — — FDA listed —
Perfect Sunscreen Tinted Mineral SPF50 .12 g/mL 72203-0017-01 Bluemercury, 1 bottle — — 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

🏛️
2022
On the market since
Apr 2022
📍
2026
Currently FDA-listed
4 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.

🔬 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 Zinc Oxide — the ingredient across all brands.

Top reported reactions

Macular Degeneration460
Nausea365
Pyrexia351
Pain348
Malaise289
Weight Decreased284
Constipation257

Age at onset

Neonate6
Infant11
Child35
Adolescent8
Adult218
Elderly272

Reporter sex

3,195 reports
Male · 36%
Female · 64%
Unknown · 0%

Serious outcomes

Hospitalization1,367
Death290
Life-threatening166
Disabling63
Reports over time (by year) — tap or hover for the count & year
2019 2021 2023 2026 352 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.

📦 Packaging — all sizes for this product

Package NDCDescription Marketing startStatus
72203-0016-01 You're viewing this 1 BOTTLE in 1 CARTON (72203-016-01) / 50 mL in 1 BOTTLE 2022-04-15 Active

🧭 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 — Not published for this NDC No photo available yet for this listing.
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 FDA registers it as 72203-016-01, which is what is printed on the packaging and shown on DailyMed. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero: 72203-0016-01, written without dashes as 72203001601. The Identity section at the top of this page lists every form of this code.
What do the three segments of this NDC mean?
In 72203-0016-01, the first segment (72203) is the labeler code FDA assigned to Bluemercury, Inc.; the middle segment (0016) identifies this specific product — its ingredient, strength, and dosage form; and the last segment (01) identifies this exact package size and type. Together they name one specific package of one specific product.
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 Bluemercury, Inc.. Listing status can change — the directory data on this page refreshes weekly.
Who lists this product with the FDA?
Bluemercury, 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.

📄 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 📦 Storage and Handling 🧪 Active Ingredient 🧪 Inactive Ingredients 🎯 Purpose
🎯 Indications and Usage 30 words ▾

Uses Helps prevent sunburn. If used as directed with other sun protection measures (see Directions ), decreases the risk of skin cancer and early skin aging caused by the sun.

⏱️ Dosage and Administration 88 words ▾

Directions Apply liberally 15 minutes before sun exposure. Reapply at least every 2 hours. Use a water resistant sunscreen if swimming or sweating.

Sun Protection Measures. Spending time in the sun increases your risk of skin cancer and early skin aging. To decrease this risk, regularly use a sunscreen with a broad spectrum SPF of 15 or higher and other sun protection measures including: Limit time in the sun, especially from 10am-2pm.

Wear long-sleeve shirts, pants, hats & sunglasses. Children under 6 months of age: Ask a doctor.

⚠️ Warnings 54 words ▾

Warnings For external use only. Do not use on damaged or broken skin. When using this product keep out of eyes. Rinse with water to remove. Stop use and ask a doctor if rash occurs. Keep out of reach of children. If swallowed, get medical help or contact a Poison Control Center right away.

📦 Storage and Handling 14 words ▾

Other Information Protect the product in this container from excessive heat and direct sun.

🧪 Active Ingredient 5 words ▾

Active Ingredient Zinc Oxide 12%

🧪 Inactive Ingredients 84 words ▾

Inactive Ingredients Water, Caprylic/Capric Triglyceride, Squalane, Isoamyl Laurate, Butyloctyl Salicylate, Glycerin, Jojoba Esters, Methylpropanediol, Cetyl Alcohol, Glyceryl Stearate, Silica, Tocopherol, Tocopheryl Acetate, Camellia Sinensis Leaf Extract, Lavandula Angustifolia (Lavender) Flower/Leaf/Stem Extract, Lavandula Angustifolia (Lavender) Flower Extract, Helianthus Annuus (Sunflower) Seed Oil, Pyrus Malus (Apple) Fruit Extract, Allantoin, Bisabolol, Rutin, Lecithin, Hydrogenated Lecithin, Lysolecithin, Caprylyl Glycol, Sclerotium Gum, Iron Oxides, Phenylpropanol, Pullulan, Xanthan Gum, C12-15 Alkyl Benzoate, Polyglyceryl-4 Diisostearate/Polyhydroxystearat e/Sebacate, Polyglyceryl-2 Dipolyhydroxystearate, Ceteth-20, Steareth-20, Tetrasodium Glutamate Diacetate, Phenoxyethanol, PEG-75 Stearate, Ethylhexylglycerin, Hexylene Glycol, Sodium Hydroxide

🎯 Purpose 2 words ▾

Purpose sunscreen

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗
← 72203-0014-01 · Bluemercury 72203-0017-01 · Bluemercury, →
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.