HomeNDC LookupIngredientsGadoquatrane › 50419-0331-11
Ambelvist Gadoquatrane 257.9 mg/mL Injection — NDC 50419-0331-11 package photo

Ambelvist Gadoquatrane 257.9 mg/mL Injection

by Bayer HealthCare Pharmaceuticals Inc. · 5 SYRINGE in 1 CARTON (50419-331-11) / 10 mL in 1 SYRINGE (50419-331-01)
NDC 50419-0331-11
🏷️ FDA NDC (as labeled) 50419-331-11 billing pads the product segment with a zero
Rx only Brand 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 →

🆔 Identity & classification

FDA NDC (as labeled) 50419-331-11
Product NDC 50419-331
11-digit billing NDC 50419033111
NCPDP billing unit ML — per mL (volume)
UNII OZG7J613HK
UPC 0350419329118, 0350419327114
Application # NDA219627
SPL Set ID fac80f5d-8d37-4237-bb52-0faef0dd46aa
DEA schedule Non-controlled
Marketing category NDA
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2026-06-12
Route INTRAVENOUS
Dosage form INJECTION
Substance GADOQUATRANE
GCN Seq No 089056
GCN 59279
HICL code 051372
Ingredient (HICL) Gadoquatrane
HIC1 code Z
Therapeutic class — broad (HIC1) Body As A Whole
HIC2 code Z9
Therapeutic class — intermediate (HIC2) Unclassified Drugs
HIC3 code Z9D
Therapeutic class — specific (HIC3) Diagnostic Preparations,Miscellaneous
AHFS code 36:68.00.00
AHFS class Roentgenography And Other Imaging Agents
FDB label name AMBELVIST 1 MMOL/10 ML SYRINGE
FDB brand name Ambelvist
Legend status F — Federal legend — prescription drug or device
Why two NDCs? The FDA registers this code as 50419-331-11 — 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 → 50419-0331-11. 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

LabelerBayer HealthCare Pharmaceuticals Inc.
Application holderBAYER HEALTHCARE PHARMACEUTICALS INC
FDA applicationNDA219627 (NDA)
Labeler code50419
First marketedJun 2026
Product typeHuman Prescription Drug
Portfolio62 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

Label name AMBELVIST 1 MMOL/10 ML SYRINGE Ingredient Gadoquatrane
📗 Our plain-language guide HelloPharmacist
  • Ambelvist is a contrast agent — essentially a special dye that's injected into a vein right before your MRI. It contains a metal called gadolinium that makes certain parts of your...
  • What exactly is Ambelvist and why does my doctor want me to have it before my MRI?
  • A trained technician or nurse will inject Ambelvist directly into a vein, usually in your arm, just before the MRI starts. The scan can begin right away after the injection. Some p...
  • How is it given, and will I feel anything during the injection?
📖 Read our full Gadoquatrane guide →
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.

  • 0.196 mg / 1 mL UNII J1A8830GE7
    A synthetic calcium compound used as a binder and filler in tablets and capsules. It helps hold the medicine's ingredients together and adds bulk so the pill is easier to handle and swallow.
  • UNII QTT17582CB
    A strong acid used to adjust and maintain the proper pH level in liquid medicines, ensuring stability and preventing breakdown of active ingredients.
  • 3.14 mg / 1 mL UNII 451W47IQ8X
    Sodium chloride is common table salt. It's used in medicines as a buffer to maintain proper pH, as a filler to add bulk, or to adjust the osmotic balance in liquid formulations.
  • 1.21 mg / 1 mL UNII 023C2WHX2V
    Tromethamine is a chemical buffer that helps maintain the proper acidity level in liquid medicines. It neutralizes acids and stabilizes the solution so the medication remains effective and safe throughout its shelf life.
  • 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.

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

Where does this data come from?
Data sourced from official FDA Structured Product Labeling (SPL) via DailyMedingredient 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 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.
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
Ambelvist 257.9 mg/mL 50419-0323-11 Bayer 10 vials FDA listed
Ambelvist 257.9 mg/mL 50419-0327-11 Bayer 10 bottles FDA listed
Ambelvist 257.9 mg/mL 50419-0322-11 Bayer 10 vials FDA listed
Ambelvist 257.9 mg/mL 50419-0328-11 Bayer 10 bottles FDA listed
Ambelvist 257.9 mg/mL 50419-0330-11 Bayer 5 syringes FDA listed
Ambelvist 257.9 mg/mL 50419-0324-11 Bayer 10 vials FDA listed
Ambelvist 257.9 mg/mL 50419-0326-11 Bayer 10 bottles FDA listed
Ambelvist 257.9 mg/mL 50419-0329-11 Bayer 10 bottles FDA listed
Ambelvist 257.9 mg/mL 50419-0321-11 Bayer 3 vials FDA listed
Ambelvist 257.9 mg/mLthis 50419-0331-11 Bayer 5 syringes FDA listed
Ambelvist 257.9 mg/mL 50419-0332-11 Bayer 5 syringes FDA listed
About this product: this is the brand-name version. We did not find an FDA-approved generic match for this exact strength, form and route.
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

🏛️
2026
First FDA approval
Jun 2026
📍
2026
Currently FDA-listed
listed with the FDA
🛡️
2040
Latest patent/protection listed
not a guaranteed launch date
🔒No FDA-approved generic found

We did not find an FDA-approved generic match for this exact strength, form and route. Patent/protection dates below may affect future generic timing.

🛡️ Latest patent/protection date listed: FDA patent/protection data lists protections through May 2040. This may affect when a full generic version becomes widely available, but it is not a guaranteed launch date.
📅 FDA approved Jun 12, 2026 RLD RS ⏳ ~13.7 yr to latest listed protection

Why the date isn’t exact: Generic timing can change because patents may be challenged, settled, licensed, added, removed, or worked around with a narrower label — and FDA approval does not always mean a pharmacy can get the generic today.

Patents & exclusivity — FDA Orange Book
US 10722601 — drug substance (U-4424)
US 10722601 — drug substance (U-4424)
US 10722601 — drug substance (U-4424)
US 10722601 — drug substance (U-4424)
US 10722601 — drug substance (U-4424)
US 10722601 — drug substance (U-4424)
US 10137209 — drug substance (U-4424)
US 10137209 — drug substance (U-4424)
US 10137209 — drug substance (U-4424)
US 10137209 — drug substance (U-4424)
US 10137209 — drug substance (U-4424)
US 10137209 — drug substance (U-4424)
US 11491245 — drug substance
US 11944690 — drug product
US 11491245 — drug substance
US 12478696 — drug substance
US 12478696 — drug substance
US 11944690 — drug product
US 12478696 — drug substance
US 11944690 — drug product
US 12303573 — drug product
US 12303573 — drug product
US 12303573 — drug product
US 11944690 — drug product
US 12478696 — drug substance
US 12478696 — drug substance
US 11944690 — drug product
US 11491245 — drug substance
US 12303573 — drug product
US 11491245 — drug substance
US 12303573 — drug product
US 11491245 — drug substance
US 11491245 — drug substance
US 11944690 — drug product
US 12303573 — drug product
US 12478696 — drug substance
Exclusivity NCE
Exclusivity NCE
Exclusivity NCE
Exclusivity NCE
Exclusivity NCE
Exclusivity NCE
2026 2028 2030 2032 2034 2036 2038 2040
Today
LOE
Substance patent Formulation patent Method-of-use patent Exclusivity Pediatric +6mo
🏛️FDA exclusivity
FDA-granted marketing protection. It’s separate from patents and may be shorter than patent protection.
🧪Product / substance patents
Patents covering the active ingredient, product, formulation, or related drug features.
🎯Method-of-use patents
Patents covering specific approved uses. These can sometimes be carved out with a “skinny label,” but not always.
🛈 What do these terms mean?
Patent
Legal protection listed in the Orange Book that may delay generic approval or launch. Issued by the U.S. Patent & Trademark Office.
Substance patent
Covers the active drug molecule itself — the hardest to design around. A generic generally can’t launch until it expires.
Formulation (product) patent
Covers a specific formulation or dosage form. A generic can sometimes work around it with a different formulation.
Method-of-use patent
A patent covering one specific approved use of the drug — not necessarily the whole molecule. A generic can sometimes launch with a “skinny label” that carves out the protected use and keeps the others.
Skinny label
A generic label that omits a still-patented use when the FDA allows it — letting a generic reach the market for the unprotected uses.
Exclusivity
FDA-granted marketing protection, separate from patents — e.g. 5-yr new chemical entity, 7-yr orphan drug, or a +6-month pediatric extension.
Paragraph IV
A generic applicant’s formal challenge to a listed patent. It can potentially lead to earlier generic entry, but often involves litigation or a settlement.
RLD / RS
Reference Listed Drug — the brand product the FDA uses as the reference for generic applications. Reference Standard — the product the FDA expects generics to compare against in bioequivalence testing.
TE / AB rating
FDA therapeutic-equivalence rating. An AB rating generally means the FDA considers a generic therapeutically equivalent to — and substitutable for — the brand.
LOE (loss of exclusivity)
The latest patent or exclusivity currently listed — the loss-of-exclusivity / latest-listed-protection date shown on this page. Paragraph-IV challenges and settlements can move the real date earlier; FDA approval and a manufacturer’s decision to market can move it later.

Built from the FDA Orange Book. The bars above are scaled to each protection’s expiry; the red LOE marker is the last one to lapse.

Listed patents (36)
PatentTypeUse codeExpires
US 10722601 ↗ Drug substance U-4424 May 30, 2036
US 10722601 ↗ Drug substance U-4424 May 30, 2036
US 10722601 ↗ Drug substance U-4424 May 30, 2036
US 10722601 ↗ Drug substance U-4424 May 30, 2036
US 10722601 ↗ Drug substance U-4424 May 30, 2036
US 10722601 ↗ Drug substance U-4424 May 30, 2036
US 10137209 ↗ Drug substance U-4424 May 30, 2036
US 10137209 ↗ Drug substance U-4424 May 30, 2036
US 10137209 ↗ Drug substance U-4424 May 30, 2036
US 10137209 ↗ Drug substance U-4424 May 30, 2036
US 10137209 ↗ Drug substance U-4424 May 30, 2036
US 10137209 ↗ Drug substance U-4424 May 30, 2036
US 11491245 ↗ Drug substance May 30, 2036
US 11944690 ↗ Drug product May 19, 2040
US 11491245 ↗ Drug substance May 30, 2036
US 12478696 ↗ Drug substance May 30, 2036
US 12478696 ↗ Drug substance May 30, 2036
US 11944690 ↗ Drug product May 19, 2040
US 12478696 ↗ Drug substance May 30, 2036
US 11944690 ↗ Drug product May 19, 2040
US 12303573 ↗ Drug product Nov 21, 2039
US 12303573 ↗ Drug product Nov 21, 2039
US 12303573 ↗ Drug product Nov 21, 2039
US 11944690 ↗ Drug product May 19, 2040
US 12478696 ↗ Drug substance May 30, 2036
US 12478696 ↗ Drug substance May 30, 2036
US 11944690 ↗ Drug product May 19, 2040
US 11491245 ↗ Drug substance May 30, 2036
US 12303573 ↗ Drug product Nov 21, 2039
US 11491245 ↗ Drug substance May 30, 2036
US 12303573 ↗ Drug product Nov 21, 2039
US 11491245 ↗ Drug substance May 30, 2036
US 11491245 ↗ Drug substance May 30, 2036
US 11944690 ↗ Drug product May 19, 2040
US 12303573 ↗ Drug product Nov 21, 2039
US 12478696 ↗ Drug substance May 30, 2036
FDA exclusivity
CodeWhat it grantsExpires
NCENew Chemical Entity (5-year)Jun 12, 2031
NCENew Chemical Entity (5-year)Jun 12, 2031
NCENew Chemical Entity (5-year)Jun 12, 2031
NCENew Chemical Entity (5-year)Jun 12, 2031
NCENew Chemical Entity (5-year)Jun 12, 2031
NCENew Chemical Entity (5-year)Jun 12, 2031
Common questions
Is there a generic version of AMBELVIST 1 MMOL/10 ML SYRINGE?
No FDA-approved generic equivalent is currently listed in the FDA Orange Book for AMBELVIST 1 MMOL/10 ML SYRINGE. Based on the patents and exclusivity currently listed, the Orange Book estimate is that full-label generic entry may be delayed until May 2040 — an estimate, not a guaranteed launch date.
The FDA approved a generic — why can’t I get it at my pharmacy yet?
FDA approval and pharmacy availability are two different things. The FDA can approve a generic years before it actually reaches pharmacies, because the brand company may still hold patents or have a settlement that delays the launch. A manufacturer also has to choose to make and sell it, and have supply ready. So a drug can be “FDA-approved generic exists” and still be brand-only at the counter today.
Why do different websites show different generic release dates?
Generic availability is not based on one single date. Some sources use the first exclusivity expiration, some use the last product patent, and others use the latest method-of-use patent. Patent challenges, settlements, licenses, and label carve-outs can also change the real-world launch date. This page shows the underlying Orange Book dates so you can see why estimates may differ.
What does “FDA listed” mean?
It means the product appears in the FDA’s official NDC directory. That’s a good sign a product exists and is intended for the U.S. market, but on its own it does not confirm a pharmacy can fill it today. Where we have recent retail pricing data (NADAC) for a product, we label it “Availability likely” instead.
What does a patent or protection date mean here?
It’s the latest date currently listed in the FDA Orange Book for a patent or exclusivity on the brand product. It can affect when a full generic version becomes widely available — but it is not a guaranteed generic launch date. Generics sometimes arrive earlier (through a settlement or patent challenge) or later (a manufacturer still has to make and sell one).
What does “current Orange Book estimate” mean?
It means we are using the latest patent and exclusivity dates currently listed in the FDA Orange Book. It is not a guaranteed launch date.
Can a generic come out before the last patent expires?
Sometimes. A generic company may challenge a patent, settle with the brand manufacturer, receive a license, or obtain approval with a narrower label that avoids a patented use. In other cases, the last listed protection may delay full-label generic competition.
Can a generic come out after the listed dates?
Yes. Even after patents or exclusivity expire, a generic still needs FDA approval and a manufacturer must choose to market it. Supply, litigation, business decisions, or regulatory issues can delay actual availability.
What is the difference between patents and exclusivity?
Patents are legal protections usually issued by the U.S. Patent and Trademark Office. FDA exclusivity is marketing protection granted by the FDA. They are separate, and either one can affect generic timing.
Why are there multiple patent dates?
One drug can have several patents covering different things: the active ingredient, a formulation, a manufacturing process, or a specific approved use. That is why a page may show several expiration dates instead of one simple generic date.
Built from FDA Orange Book patent and exclusivity data. Dates are refreshed from public FDA data when available; the marker is max(latest patent expiry, latest exclusivity expiry). Paragraph-IV settlements and first-filer 180-day exclusivity can shift the real date; a method-of-use patent may allow an earlier skinny-label generic for non-protected indications. Generic launch timing is an estimate, not a guarantee.
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.

📦 Packaging — all sizes for this product

Package NDCDescription Marketing startStatus
50419-0331-11 You're viewing this 5 SYRINGE in 1 CARTON (50419-331-11) / 10 mL in 1 SYRINGE (50419-331-01) 2026-06-12 Active

🧭 About this NDC listing & data coverage

Finished prescription 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 ✓ Available
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

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 50419-331-11, 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: 50419-0331-11, written without dashes as 50419033111. 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 50419-0331-11, the first segment (50419) is the labeler code FDA assigned to Bayer HealthCare Pharmaceuticals Inc.; the middle segment (0331) identifies this specific product — its ingredient, strength, and dosage form; and the last segment (11) 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 Bayer HealthCare Pharmaceuticals Inc.. Listing status can change — the directory data on this page refreshes weekly.
Who lists this product with the FDA?
Bayer HealthCare Pharmaceuticals 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 a prescription product, so it is dispensed under a prescriber's order. Your pharmacist can tell you whether any over-the-counter forms of the same medication exist.
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.

📄 Full prescribing information FDA SPL

The complete FDA label for this product — the official prescribing information, verbatim, section by section. Jump with a chip, search within the label, or expand everything.
🚨 Boxed Warning ~2 min read

WARNING: RISK ASSOCIATED WITH INTRATHECAL USE and NEPHROGENIC SYSTEMIC FIBROSIS Risk Associated with Intrathecal Use Intrathecal administration of gadolinium-based contrast agents (GBCAs) can cause serious adverse reactions including death, coma, encephalopathy, and seizures. AMBELVIST is not approved for intrathecal use [see Warnings and Precautions (5.1) ]. Nephrogenic Systemic Fibrosis GBCAs increase the risk for nephrogenic systemic fibrosis (NSF) among patients with impaired elimination of the drugs.

Avoid use of AMBELVIST in these patients unless the diagnostic information is essential and not available with non-contrasted MRI or other modalities. NSF may result in fatal or debilitating fibrosis affecting the skin, muscle, and internal organs. The risk for NSF appears highest among patients with: Chronic, severe kidney disease (GFR < 30 mL/min/1.73 m 2 ), or Acute kidney injury.

Screen patients for acute kidney injury and other conditions that may reduce renal function. For patients at risk for chronically reduced renal function (for example, age > 60 years, hypertension, or diabetes), estimate the glomerular filtration rate (GFR) through laboratory testing. For patients at highest risk for NSF, do not exceed the recommended AMBELVIST dose and allow a sufficient period of time for elimination of the drug from the body prior to any re-administration [see Warnings and Precautions (5.2) ].

WARNING: RISK ASSOCIATED WITH INTRATHECAL USE and NEPHROGENIC SYSTEMIC FIBROSIS See full prescribing information for complete boxed warning Intrathecal administration of gadolinium-based contrast agents (GBCAs) can cause serious adverse reactions including death, coma, encephalopathy, and seizures. AMBELVIST is not approved for intrathecal use ( 5.1 ). GBCAs increase the risk for nephrogenic systemic fibrosis (NSF) among patients with impaired elimination of the drugs.

Avoid use of AMBELVIST in these patients unless the diagnostic information is essential and not available with non-contrasted MRI or other modalities. The risk for NSF appears highest among patients with: Chronic, severe kidney disease (GFR < 30 mL/min/1.73 m 2 ), or Acute kidney injury. Screen patients for acute kidney injury and other conditions that may reduce renal function.

For patients at risk for chronically reduced renal function (for example, age >60 years, hypertension or diabetes), estimate the glomerular filtration rate (GFR) through laboratory testing ( 5.2 ).

🎯 Indications and Usage 105 words

1 INDICATIONS AND USAGE AMBELVIST is indicated in adult and pediatric patients, including term neonates, for use with magnetic resonance imaging (MRI) to detect and visualize lesions with abnormal vascularity in: the central nervous system (brain, spine, and associated tissues) the body (head and neck, thorax, abdomen, pelvis, and musculoskeletal system) AMBELVIST is a gadolinium-based contrast agent indicated in adult and pediatric patients, including term neonates, for use with magnetic resonance imaging (MRI) to detect and visualize lesions with abnormal vascularity in: the central nervous system (brain, spine, and associated tissues) the body (head and neck, thorax, abdomen, pelvis, and musculoskeletal system) ( 1 )

⏱️ Dosage and Administration ~3 min read

2 DOSAGE AND ADMINISTRATION Recommended dose for adult and pediatric patients, including term neonates, is 0.01 mmol/kg actual body weight (equivalent to an injection volume of 0.1 mL/kg). ( 2.1 ) Administer the dose by intravenous injection, manually or by compatible power injector, at 1 mL/sec to 4 mL/sec followed by a flush of 0.9% sodium chloride injection; for pediatric patients, adjust the flow rate and flush volume based on age. ( 2.2 )

2.1Recommended Dose The recommended dose of AMBELVIST for adult and pediatric patients, including term neonates, is 0.01 mmol/kg actual body weight (equivalent to an injection volume of 0.1 mL/kg) administered intravenously. Clarification on Gadolinium Content Each molecule of gadoquatrane contains four gadolinium (Gd) ions [see Description (11) ] . Therefore, the recommended dose of 0.01 mmol/kg of gadoquatrane (administered as AMBELVIST) delivers 0.04 mmol Gd/kg.

2.2Administration and Imaging Instructions Administer AMBELVIST as an intravenous injection, manually or by compatible power injector, at a flow rate of approximately 1 mL/second to 4 mL/second, followed by a flush of 0.9% sodium chloride injection. For pediatric patients, adjust the flow rate and flush volume based on age. AMBELVIST is for intravenous use only and must not be administered intrathecally [see Warnings and Precautions (5.1) ].

Use aseptic technique when preparing and administering AMBELVIST. Visually inspect AMBELVIST for particulate matter and discoloration prior to administration. Do not use the solution if it is discolored, particulate matter is present, or the container appears damaged.

If solidification occurs due to cold exposure, bring AMBELVIST to room temperature before use and inspect to ensure that the solution is clear and colorless to pale yellow. Do not mix AMBELVIST with other medications, and do not administer AMBELVIST in the same intravenous line simultaneously with other medications because of the potential for chemical incompatibility. Contrast MRI can begin immediately following the injection of AMBELVIST.

2.3Directions for Use of Single-Dose Containers Single-Dose Vials Pierce the rubber stopper only once. Aseptically draw AMBELVIST into the syringe immediately before use. Each vial of AMBELVIST is intended for one single dose. Discard any unused vial contents. Single-Dose Pre-Filled Syringes Remove the tip cap from the pre-filled syringe immediately before use. Each pre-filled AMBELVIST syringe is for one single dose. Discard any unused syringe contents.

2.4Directions for Use of Imaging Bulk Package AMBELVIST Imaging Bulk Package (IBP) is not for direct infusion. The IBP is for use only with an automated contrast injection system, contrast management system, or contrast media transfer set approved or cleared for use with this contrast agent in this IBP. See drug and device labeling for information on devices indicated for use with this IBP and techniques to help assure safe use.

The AMBELVIST IBP is to be used only in a room designated for radiological procedures that involve intravascular administration of a contrast agent. Utilize aseptic technique for penetrating the container closure of the AMBELVIST IBP and transferring AMBELVIST. Penetrate the container closure only one time with a suitable sterile component of the automated contrast injection system, contrast management system, or contrast media transfer set (e.g., transfer spike) approved or cleared for use with this contrast agent in this IBP.

Once the AMBELVIST IBP is punctured, do not remove it from the work area during the entire period of use. Storage temperature of AMBELVIST IBP after the closure has been entered is 20°C to 25°C (68°F to 77°F). Maximum use time is 6 hours from puncture.

Discard any unused portion 6 hours after puncture of the IBP. After the container closure is punctured, if the integrity of the IBP and the delivery system cannot be assured through direct continuous supervision, the IBP and all associated…

💊 Dosage Forms and Strengths 111 words

3 DOSAGE FORMS AND STRENGTHS Injection: 0.1 mmol/mL of gadoquatrane as a clear and colorless to pale yellow solution available as: Strength Package Type 0.2 mmol/2 mL (0.1 mmol/mL) 0.75 mmol/7.5 mL (0.1 mmol/mL) 1 mmol/10 mL (0.1 mmol/mL) 1.5 mmol/15 mL (0.1 mmol/mL) Single-Dose Vials 0.75 mmol/7.5 mL (0.1 mmol/mL) 1 mmol/10 mL (0.1 mmol/mL) 1.5 mmol/15 mL (0.1 mmol/mL) Single-Dose Pre-Filled Syringes 3 mmol/30 mL (0.1 mmol/mL) 6.5 mmol/65 mL (0.1 mmol/mL) Imaging Bulk Packages 3 mmol/30 mL (0.1 mmol/mL) 6.5 mmol/65 mL (0.1 mmol/mL) Pharmacy Bulk Packages Injection: 0.1 mmol/mL of gadoquatrane in single-dose vials, single-dose pre-filled syringes, imaging bulk packages, and pharmacy bulk packages.

( 3 )

Contraindications 25 words

4 CONTRAINDICATIONS AMBELVIST is contraindicated in patients with a history of severe hypersensitivity reactions to AMBELVIST. History of severe hypersensitivity to AMBELVIST. ( 4 )

⚠️ Warnings and Cautions ~3 min read

5 WARNINGS AND PRECAUTIONS Hypersensitivity Reactions: Serious hypersensitivity reactions have occurred with GBCAs. Monitor patients closely for need of emergency cardiorespiratory support. ( 5.3 ) Gadolinium Retention: Gadolinium is retained for months or years in brain, bone, and other organs. ( 5.4 )

5.1Risks Associated with Intrathecal Use Intrathecal administration of GBCAs can cause serious adverse reactions including death, coma, encephalopathy, and seizures. The safety and effectiveness of AMBELVIST have not been established with intrathecal use. AMBELVIST is not approved for intrathecal use [see Dosage and Administration (2.1) ] .

5.2Nephrogenic Systemic Fibrosis GBCAs increase the risk for nephrogenic systemic fibrosis (NSF) among patients with impaired elimination of the drugs. Avoid use of AMBELVIST among these patients unless the diagnostic information is essential and not available with non-contrast enhanced MRI or other modalities. The GBCA-associated NSF risk appears highest for patients with chronic, severe kidney disease (GFR < 30 mL/min/1.73 m 2 ) as well as patients with acute kidney injury.

The risk appears lower for patients with chronic, moderate kidney disease (GFR 30 to 59 mL/min/1.73 m 2 ) and little, if any, for patients with chronic, mild kidney disease (GFR 60 to 89 mL/min/1.73 m 2 ). NSF may result in fatal or debilitating fibrosis affecting the skin, muscle, and internal organs. Report any diagnosis of NSF following AMBELVIST administration to Bayer HealthCare (1- 888-842-2937) or FDA (1-800-FDA-1088 or www.fda.gov/medwatch).

Screen patients for acute kidney injury and other conditions that may reduce renal function. Features of acute kidney injury consist of rapid (over hours to days) and usually reversible decrease in kidney function, commonly in the setting of surgery, severe infection, injury, or drug-induced kidney toxicity. Serum creatinine levels and estimated GFR may not reliably assess renal function in the setting of acute kidney injury.

For patients at risk for chronically reduced renal function (for example, age > 60 years, diabetes mellitus, or chronic hypertension), estimate the GFR through laboratory testing. Among the factors that may increase the risk for NSF are repeated or higher than recommended doses of a GBCA and degree of renal impairment at the time of exposure. Record the specific GBCA and the dose administrated to a patient.

For patients at highest risk for NSF, do not exceed the recommended AMBELVIST dose and allow a sufficient period of time for elimination of the drug prior to re-administration. For patients receiving hemodialysis, physicians may consider the prompt initiation of hemodialysis following the administration of a GBCA in order to enhance the contrast agent's elimination [see Use in Specific Populations (8.6) and Clinical Pharmacology (12.3) ] . The usefulness of hemodialysis in the prevention of NSF is unknown.

5.3Hypersensitivity Reactions With GBCAs, serious hypersensitivity reactions have occurred. In most cases, initial symptoms occurred within half an hour of GBCA administration and resolved with prompt emergency treatment. Before AMBELVIST administration, assess all patients for any history of a reaction to contrast media, bronchial asthma, and/or allergic disorders.

These patients may have an increased risk for a hypersensitivity reaction to AMBELVIST. AMBELVIST is contraindicated in patients with history of severe hypersensitivity reactions to AMBELVIST [see Contraindications (4) ] . Administer AMBELVIST only in situations where trained personnel and therapies are promptly available for the treatment of hypersensitivity reactions, including personnel trained in resuscitation.

During and following AMBELVIST administration, observe patients for signs and symptoms of hypersensitivity reactions.

5.4Gadolinium Retention Gadolinium is retained for months or years in several organs. The highest concentrations (nanomoles per gram of tissue) have been…

🤒 Adverse Reactions ~3 min read

6 ADVERSE REACTIONS The following clinically significant adverse reactions are discussed elsewhere in the labeling: Nephrogenic Systemic Fibrosis [see Warnings and Precautions (5.2) ] Hypersensitivity Reactions [see Contraindications (4) and Warnings and Precautions (5.3) ] Most frequently observed adverse reactions (incidence ≥ 0.2%) were dizziness, headache, injection site reactions, nausea, vomiting, feeling hot, paresthesia, and pruritus. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Bayer HealthCare Pharmaceuticals Inc. at 1-888-842-2937 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

6.1Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. The safety of AMBELVIST was evaluated in four clinical studies in a total of 842 patients who received a single 0.01 mmol/kg dose. This safety population included 697 adult patients from two active comparator, cross-over studies [see Clinical Studies (14.1) ], 52 adult patients from a dose-finding study, and 93 pediatric patients [see Use in Specific Populations (8.4) ] .

Adult Patients Among the 749 adult patients (who were exposed to gadoquatrane), the mean age was 56 years (range: 18 years to 89 years). Of these patients, 67% were White, 29% Asian, 1% Black or African American, and 3% of other or unspecified race, and 10% were Hispanic or Latino, 76% not Hispanic or Latino, and 14% of unspecified ethnicity. Table 1 lists adverse reactions that occurred in ≥ 0.2% of adult patients who received 0.01 mmol/kg AMBELVIST.

Table 1: Adverse Reactions Reported in ≥ 0.2% of Adult Patients Who Received AMBELVIST Adverse Reaction AMBELVIST 0.01 mmol/kg N=749 (%) Dizziness

0.9 Headache

0.9Injection site reactions Injection site reactions include injection site pain, catheter site pain, injection site coldness, and injection site erythema.

0.7 Nausea

0.5 Vomiting

0.4 Feeling hot

0.4 Paresthesia

0.3 Pruritus

0.3Adverse reactions that occurred in < 0.2% of adult patients who received 0.01 mmol/kg AMBELVIST included erythema, abdominal discomfort, toothache, feeling cold, decreased glomerular filtration rate, urinary sediment, urinary white blood cells, urticaria, dyspnea, rhinalgia, arthralgia, limb discomfort, hematuria, vertigo, and hyperbilirubinemia. Pediatric Patients Among the 93 pediatric patients, the mean age was 7 years (range: 28 days to less than 18 years). Of these patients, 57% were White, 38% Asian, 1% Black or African American, and 4% of unspecified race, and 14% were Hispanic or Latino, 80% not Hispanic or Latino, and 6% of unspecified ethnicity.

Adverse reactions in pediatric patients who received 0.01 mmol/kg AMBELVIST included (each occurring in 1% of patients): apnea, pyrexia, decreased platelet count, erythema, and rash [see Use in Specific Populations (8.4) ] .

6.2Postmarketing Experience The following additional adverse reactions have been identified during postmarketing use of GBCAs. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Gastrointestinal Disorders : Acute pancreatitis with onset within 48 hours after GBCA administration.

General Disorders and Administration Site Conditions : Fatigue, asthenia, pain syndromes, and heterogeneous clusters of symptoms in the neurological, cutaneous, and musculoskeletal systems with variable onset and duration after GBCA administration [see Warnings and Precautions (5.4) ] Respiratory, Thoracic, and Mediastinal Disorders : Acute respiratory distress syndrome, pulmonary edema. Skin Disorders : Gadolinium-associated plaques

👥 Use in Specific Populations ~3 min read

8 USE IN SPECIFIC POPULATIONS Pregnancy: Use only if imaging is essential during pregnancy and cannot be delayed. ( 8.1 )

8.1Pregnancy Risk Summary There are no available data on AMBELVIST use in pregnant women to evaluate for a drug-associated risk of major birth defects, miscarriage, or other adverse maternal or fetal outcomes. GBCAs cross the placenta and result in fetal exposure. In human placental imaging studies, contrast was visualized in the placenta and fetal tissues after maternal GBCA administration.

Based on animal studies, use of GBCAs during pregnancy may result in fetal gadolinium retention. Published epidemiological studies on the association between GBCAs and adverse fetal outcomes have reported inconsistent findings and have important methodological limitations (see Data ) . In animal reproduction studies, there were no adverse developmental effects observed in rats or rabbits with intravenous administration of gadoquatrane during organogenesis (see Data ) .

Because of the potential risks of gadolinium to the fetus, use AMBELVIST only if imaging is essential during pregnancy and cannot be delayed. The background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defects, loss, or other adverse outcomes.

In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Human Data Available data regarding exposure to GBCAs during pregnancy from published epidemiological studies are not sufficient to assess the risk of adverse fetal and neonatal effects that may be associated with GBCAs. A retrospective cohort study of over 1.4 million pregnancies in Ontario, Canada, comparing pregnant women who had a GBCA MRI to pregnant women who did not have an MRI, reported a higher occurrence of stillbirths and neonatal deaths in the group receiving GBCA MRI.

Limitations of this study include a lack of comparison with non-contrast MRI and lack of information about the maternal indication for MRI. Another retrospective cohort study of over 11 million pregnancies in the Medicaid database found no increased risk of fetal or neonatal death or Neonatal Intensive Care Unit admission when comparing pregnancies exposed to GBCA MRI versus non-contrast MRI. These two retrospective observational studies assessed a limited number of potential pregnancy outcomes and did not evaluate the full spectrum of potential fetal risk.

Animal Data Gadolinium Retention GBCAs administered to pregnant non-human primates (0.1 mmol Gd/kg on gestational days 85 and 135) result in measurable gadolinium concentration in the offspring in bone, brain, skin, liver, kidney, and spleen for at least 7 months. GBCAs administered to pregnant mice (2 mmol Gd/kg daily on gestational days 16 through 19) result in measurable gadolinium concentrations in the pups in bone, brain, kidney, liver, blood, muscle, and spleen at one-month postnatal age. Reproductive Toxicology Gadoquatrane had no effect on embryo-fetal development in rats and rabbits at dose levels of up to 1.55 mmol Gd/kg/day (corresponding to 18 and 23 times the human exposure in rats and rabbits, respectively).

When rats were treated through pregnancy and lactation at dose levels of up to 1.56 mmol Gd/kg/day (39 times the recommended human dose), there were no adverse effects observed on survival, growth, sexual maturation, or neurobehavioral and reproductive function in the offspring. The exposure at the highest dose corresponded to 38 times (Lactation Day 4) and 12 times (Lactation Day 20) the exposure in terms of AUC in humans.

8.2Lactation Risk Summary There are no data on the presence of gadoquatrane in human milk, the effects on the breastfed infant, or the effects on milk production. However, published lactation data on other GBCAs indicate that 0.01% to 0.04% of the maternal gadolinium dose is pres…

🤰 Pregnancy ~2 min read

8.1Pregnancy Risk Summary There are no available data on AMBELVIST use in pregnant women to evaluate for a drug-associated risk of major birth defects, miscarriage, or other adverse maternal or fetal outcomes. GBCAs cross the placenta and result in fetal exposure. In human placental imaging studies, contrast was visualized in the placenta and fetal tissues after maternal GBCA administration.

Based on animal studies, use of GBCAs during pregnancy may result in fetal gadolinium retention. Published epidemiological studies on the association between GBCAs and adverse fetal outcomes have reported inconsistent findings and have important methodological limitations (see Data ) . In animal reproduction studies, there were no adverse developmental effects observed in rats or rabbits with intravenous administration of gadoquatrane during organogenesis (see Data ) .

Because of the potential risks of gadolinium to the fetus, use AMBELVIST only if imaging is essential during pregnancy and cannot be delayed. The background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defects, loss, or other adverse outcomes.

In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Human Data Available data regarding exposure to GBCAs during pregnancy from published epidemiological studies are not sufficient to assess the risk of adverse fetal and neonatal effects that may be associated with GBCAs. A retrospective cohort study of over 1.4 million pregnancies in Ontario, Canada, comparing pregnant women who had a GBCA MRI to pregnant women who did not have an MRI, reported a higher occurrence of stillbirths and neonatal deaths in the group receiving GBCA MRI.

Limitations of this study include a lack of comparison with non-contrast MRI and lack of information about the maternal indication for MRI. Another retrospective cohort study of over 11 million pregnancies in the Medicaid database found no increased risk of fetal or neonatal death or Neonatal Intensive Care Unit admission when comparing pregnancies exposed to GBCA MRI versus non-contrast MRI. These two retrospective observational studies assessed a limited number of potential pregnancy outcomes and did not evaluate the full spectrum of potential fetal risk.

Animal Data Gadolinium Retention GBCAs administered to pregnant non-human primates (0.1 mmol Gd/kg on gestational days 85 and 135) result in measurable gadolinium concentration in the offspring in bone, brain, skin, liver, kidney, and spleen for at least 7 months. GBCAs administered to pregnant mice (2 mmol Gd/kg daily on gestational days 16 through 19) result in measurable gadolinium concentrations in the pups in bone, brain, kidney, liver, blood, muscle, and spleen at one-month postnatal age. Reproductive Toxicology Gadoquatrane had no effect on embryo-fetal development in rats and rabbits at dose levels of up to 1.55 mmol Gd/kg/day (corresponding to 18 and 23 times the human exposure in rats and rabbits, respectively).

When rats were treated through pregnancy and lactation at dose levels of up to 1.56 mmol Gd/kg/day (39 times the recommended human dose), there were no adverse effects observed on survival, growth, sexual maturation, or neurobehavioral and reproductive function in the offspring. The exposure at the highest dose corresponded to 38 times (Lactation Day 4) and 12 times (Lactation Day 20) the exposure in terms of AUC in humans.

🧒 Pediatric Use 199 words

8.4Pediatric Use The safety and effectiveness of AMBELVIST for use with MRI to detect and visualize lesions with abnormal vascularity in the CNS (brain, spine, and associated tissues) and the body (head and neck, thorax, abdomen, pelvis, and musculoskeletal system) have been established in pediatric patients, including term neonates. Use of AMBELVIST in this age group is supported by evidence from adequate and well-controlled studies of AMBELVIST in adults, with additional pharmacokinetic and safety data from 93 pediatric patients aged 28 days to less than 18 years who received one 0.01 mmol/kg dose of AMBELVIST and underwent MRI of any body region [see Adverse Reactions (6.1) , Clinical Pharmacology (12.3) , and Clinical Studies (14.2 , 14.3) ] .

Adverse reactions in pediatrics included an episode of apnea in a 4-week-old patient with a history of cerebral vein thrombosis, seizures, and cerebral hemorrhage, occurring one minute after receiving AMBELVIST 0.01 mmol/kg (0.44 mL) at a rate of 0.8 mL/sec. The patient experienced sudden blood oxygen desaturation to 65% which returned to 100% within 11 minutes after the inhaled oxygen flow rate increased [see Adverse Reactions (6.1) ]. The safety of AMBELVIST has not been established in preterm neonates.

🧓 Geriatric Use 109 words

8.5Geriatric Use Of the total number of patients in clinical studies of AMBELVIST, 238 (28%) of patients were 65 years of age and older, and 75 (9%) were 75 years of age and older. No overall differences in safety or effectiveness were observed between these patients and younger patients. This drug is known to be excreted by the kidney, and the risk of adverse reactions to this drug may be greater in patients with impaired renal function.

Because elderly patients are more likely to have decreased renal function, it may be useful to monitor renal function [see Warnings and Precautions (5.2) and Use in Specific Populations (8.6) ].

🆘 Overdosage 35 words

10 OVERDOSAGE AMBELVIST can be removed by hemodialysis in the event of an overdose [see Clinical Pharmacology (12.3) ] . For additional management recommendations, consider contacting the Poison Help line (1-800-222-1222) or a medical toxicologist.

🧬 Clinical Pharmacology ~3 min read

12 CLINICAL PHARMACOLOGY

12.1Mechanism of Action Gadoquatrane is a paramagnetic tetrameric macrocyclic non-ionic complex of gadolinium that develops a magnetic moment when placed in a magnetic field. The magnetic moment alters the relaxation rates of water protons in its vicinity in the body, leading to an increase in the signal intensity (brightness) of tissues.

12.2Pharmacodynamics In MRI, visualization of normal and pathological tissue depends in part on variations in the radiofrequency signal intensity that occur with: differences in proton density differences of the spin-lattice or longitudinal relaxation times (T 1 ). differences in the spin-spin or transverse relaxation time (T 2 ). Gadoquatrane alters the T 1 and T 2 relaxation times in tissues in the magnetic field of an MRI scanner. The extent to which a contrast agent can affect the relaxation rate (1/T 1 or 1/T 2 ) of tissue water is termed relaxivity (r 1 or r 2 ).

The relaxivity (r1) of gadoquatrane is presented in Table 3. Table 3: Relaxivity (r 1 ) of Gadoquatrane Each molecule of gadoquatrane contains 4 chelated gadolinium ions [see Description (11) ] . in Human Plasma at 37°C Magnetic Field Strength Relaxivity (r 1 ) (L/mmol/sec)

1.5 T 47

3.0T 41 Cardiac Electrophysiology At 5 times the recommended dose of gadoquatrane, clinically significant QTc interval prolongation was not observed.

12.3Pharmacokinetics The peak plasma concentration (C max ) and area under the concentration time curve (AUC) of gadolinium (Gd) increased proportionally over a dose range from 0.0025 to 0.05 mmol/kg of gadoquatrane (0.25 to 5 times the recommended dose). At the recommended dose, the median (5th, 95th percentile) C max and AUC inf were 394 (249, 628) µmol Gd/L and 462 (315, 766) µmol Gd*h/L, respectively. The pharmacokinetic (PK) parameters of gadolinium by age group are shown in Table 4.

Table 4: Pharmacokinetic Parameters (Median, (5 th , 95 th Percentile)) of Gadolinium at the recommended dose of gadoquatrane by Age Group Adults N=527 0 to <2 years N=23 2 to <12 years N=45 12 to <18 years N=24 0 to <18 years N=92 Abbreviations: N, number of subjects; eGFR, estimated glomerular filtration rate; AUC inf , area under the plasma concentration-time curve from time zero extrapolated to infinity; CL/BW, clearance normalized by body weight; Vss/BW, volume of distribution at steady state normalized by body weight; t 1/2eff , effective half-life; C 10 , plasma concentration at 10 minutes post-dose; C 20 , plasma concentration at 20 minutes post-dose eGFR 105 131 141 116 134 (mL/min/1.73m 2 ) (91.5, 126) (74.7, 179) (101, 192) (85.6, 155) (85.1, 186) AUC inf (µmol Gd*h/L) 421 (308, 651) 287 (214, 353) 250 (200, 342) 347 (264, 460) 284 (203, 398) CL/BW (L/h/kg) 0.095 (0.062, 0.130) 0.139 (0.113, 0.190) 0.160 (0.116, 0.202) 0.115 (0.087, 0.150) 0.142 (0.100, 0.194) Vss/BW (L/kg) 0.205 (0.157, 0.249) 0.245 (0.226, 0.259) 0.233 (0.199, 0.244) 0.198 (0.171, 0.230) 0.230 (0.175, 0.251) t 1/2 eff (h) 1.47 (1.16, 2.24) 1.19 (0.928, 1.52) 1.01 (0.829, 1.28) 1.15 (1.04, 1.34) 1.07 (0.844, 1.40) C 10 (µmol Gd/L) 268 (209, 374) 184 (167, 199) 190 (175, 228) 236 (193, 268) 193 (168, 261) C 20 (µmol Gd/L) 216 (171, 295) 153 (135, 164) 156 (139, 193) 200 (161, 228) 160 (136, 220) Distribution After intravenous administration, gadoquatrane is distributed from the vascular to the extracellular space.

The median (5th, 95th percentile) volume of distribution over body weight of gadolinium at steady state (Vss/BW) is 0.205 (0.157, 0.252) L/kg. Plasma protein binding is < 1%. Following GBCA administration, gadolinium is present for months or years in brain, bone, skin, and other organs [see Warnings and Precautions (5.4) ] .

It is unknown whether the recommended dose of AMBELVIST results in similar or different levels of gadolinium retention relative to those of other approved macrocyclic GBCAs at their recommended doses. Elimination The median (5th, 95th percentile) effective elimination half-life (t…

🧬 Mechanism of Action 52 words

12.1Mechanism of Action Gadoquatrane is a paramagnetic tetrameric macrocyclic non-ionic complex of gadolinium that develops a magnetic moment when placed in a magnetic field. The magnetic moment alters the relaxation rates of water protons in its vicinity in the body, leading to an increase in the signal intensity (brightness) of tissues.

📦 How Supplied / Storage and Handling 190 words

16 HOW SUPPLIED/STORAGE AND HANDLING How Supplied AMBELVIST (gadoquatrane) injection is a clear and colorless to pale yellow solution available in the following presentations: Strength Package Type Sale Unit NDC 0.2 mmol/2 mL (0.1 mmol/mL) Single-Dose Vial Cartons of 3 vials 50419-321-11 0.75 mmol/7.5 mL (0.1 mmol/mL) Single-Dose Vial Cartons of 10 vials 50419-322-11 1 mmol/10 mL (0.1 mmol/mL) Single-Dose Vial Cartons of 10 vials 50419-323-11 1.5 mmol/15 mL (0.1 mmol/mL) Single-Dose Vial Cartons of 10 vials 50419-324-11 0.75 mmol/7.5 mL (0.1 mmol/mL) Single-Dose Pre-Filled Syringe Cartons of 5 syringes 50419-330-11 1 mmol/10 mL (0.1 mmol/mL) Single-Dose Pre-Filled Syringe Cartons of 5 syringes 50419-331-11 1.5 mmol/15 mL (0.1 mmol/mL) Single-Dose Pre-Filled Syringe Cartons of 5 syringes 50419-332-11 3 mmol/30 mL (0.1 mmol/mL) Imaging Bulk Package Cartons of 10 bottles 50419-326-11 6.5 mmol/65 mL (0.1 mmol/mL) Imaging Bulk Package Cartons of 10 bottles 50419-327-11 3 mmol/30 mL (0.1 mmol/mL) Pharmacy Bulk Package Cartons of 10 bottles 50419-328-11 6.5 mmol/65 mL (0.1 mmol/mL) Pharmacy Bulk Package Cartons of 10 bottles 50419-329-11 Storage and Handling Store at 25°C (77°F); excursions permitted to 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature].

📦 Storage and Handling 21 words

Storage and Handling Store at 25°C (77°F); excursions permitted to 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature].

📋 Description 147 words

11 DESCRIPTION AMBELVIST (gadoquatrane) injection is a paramagnetic tetrameric macrocyclic gadolinium-based contrast agent for intravenous use. The chemical name for gadoquatrane is tetragadolinium [4,10-bis(carboxylatomethyl)-7-{3,6,12,15-tetraoxo-16-[4,7,10-tris-(carboxylatomethyl)-1,4,7,10-tetraazacyclododecan-1-yl]-9,9-bis({[({2-[4,7,10-tris-(carboxylatomethyl)-1,4,7,10-tetraazacyclododecan-1-yl]propanoyl}amino)acetyl]-amino}methyl)-4,7,11,14-tetraazaheptadecan-2-yl}-1,4,7,10-tetraazacyclododecan-1-yl]acetate, with a molecular formula of C 81 H 128 Gd 4 N 24 O 32 and a molecular weight of 2,579.1 g/mol.

The structural formula of gadoquatrane is: AMBELVIST is a sterile, clear, colorless to pale yellow solution. Each mL contains 257.9 mg (0.1 mmol) of gadoquatrane (containing 0.4 mmol of gadolinium) and the following inactive ingredients: 0.196 mg of calcobutrol, 3.14 mg of sodium chloride,1.21 mg of trometamol, hydrochloric acid (for pH adjustment), and water for injection. The main physicochemical properties of AMBELVIST are listed in Table 2: Table 2: Physicochemical Properties of AMBELVIST Parameter Value Osmolality at 37°C (mOsm/kg H 2 O) 270 to 370 Viscosity at 20°C (mPa∙s)

2.55Viscosity at 37°C (mPa∙s) 1.76 pH 6.9 to

7.9 Chemical Structure

💬 Information for Patients 205 words

17 PATIENT COUNSELING INFORMATION Advise the patient to read the FDA-approved patient labeling (Medication Guide). Nephrogenic Systemic Fibrosis Inform the patient that AMBELVIST may increase the risk of NSF among patients with impaired elimination of the drug and that NSF may result in fatal or debilitating fibrosis affecting the skin, muscle, and internal organs. Instruct the patient to contact their physician if they develop signs or symptoms of NSF following AMBELVIST administration, such as burning, itching, swelling, scaling, hardening and tightening of the skin; red or dark patches on the skin; stiffness in joints with trouble moving, bending, or straightening the arms, hands, legs, or feet; pain in the hip bones or ribs; or muscle weakness [see Warnings and Precautions (5.2) ] .

Gadolinium Retention Advise patients that gadolinium is retained for months or years in brain, bone, skin, and other organs following AMBELVIST administration even in patients with normal renal function. The clinical consequences of retention are unknown. Retention depends on multiple factors and is greater following administration of linear GBCAs than following administration of macrocyclic GBCAs [see Warnings and Precautions (5.4) ] .

Pregnancy Advise pregnant women of the potential risk of fetal exposure to AMBELVIST [see Use in Specific Populations (8.1) ].

💬 Medication Guide ~3 min read

MEDICATION GUIDE AMBELVIST (am bel' vist) (gadoquatrane) injection, for intravenous use This Medication Guide has been approved by the U.S. Food and Drug Administration. Issued: 6/2026 What is the most important information I should know about AMBELVIST?

GBCAs like AMBELVIST may cause serious side effects including death, coma, encephalopathy, and seizures when it is given intrathecally (injection given into the spinal canal). It is not known if AMBELVIST is safe and effective with intrathecal use. AMBELVIST is not approved for this use.

AMBELVIST contains a metal called gadolinium. Small amounts of gadolinium can stay in your body including the brain, bones, skin and other parts of your body for a long time (several months to years). It is not known how gadolinium may affect you, but so far, studies have not found harmful effects in patients with normal kidneys.

Rarely, patients have reported pains, tiredness, and skin, muscle or bone ailments for a long time, but these symptoms have not been directly linked to gadolinium. There are different GBCAs that can be used for your MRI exam. The amount of gadolinium that stays in the body is different for different gadolinium medicines.

Gadolinium stays in the body more after gadodiamide than after gadoxetate disodium or gadobenate dimeglumine. Gadolinium stays in the body the least after gadoterate meglumine, gadobutrol, gadoteridol, gadopiclenol, and gadoquatrane. People who get many doses of gadolinium medicines, women who are pregnant and young children may be at increased risk from gadolinium staying in the body.

Some people with kidney problems who get gadolinium medicines can develop a condition with severe thickening of the skin, muscles and other organs in the body called nephrogenic systemic fibrosis (NSF). Your healthcare provider should screen you to see how well your kidneys are working before you receive AMBELVIST. What is AMBLEVIST?

AMBELVIST is a prescription medicine called a gadolinium-based contrast agent (GBCA). AMBELVIST, like other GBCAs, is injected into your vein and used with a magnetic resonance imaging (MRI) scanner. An MRI exam with a GBCA, including AMBELVIST, helps your healthcare provider to see problems better than an MRI exam without a GBCA.

Your healthcare provider has reviewed your medical records and has determined that you would benefit from using a GBCA with your MRI exam. Who should not receive AMBELVIST? Do not receive AMBELVIST if you have had a severe allergic reaction to AMBELVIST.

Before receiving AMBELVIST, tell your healthcare provider about all your medical conditions, including if you: have had any MRI procedures in the past where you received a GBCA. Your healthcare provider may ask you for more information including the dates of these MRI procedures. have kidney problems, diabetes, or high blood pressure. have had an allergic reaction to dyes (contrast agents) including GBCAs. are pregnant or plan to become pregnant. It is not known if AMBELVIST can harm your unborn baby.

Talk to your healthcare provider about the possible risks to an unborn baby if a GBCA such as AMBELVIST is received during pregnancy. What are the possible side effects of AMBELVIST? See " What is the most important information I should know about AMBELVIST? " Allergic reactions.

AMBELVIST can cause allergic reactions that can sometimes be serious. Your healthcare provider will monitor you closely for symptoms of an allergic reaction. The most common side effects of AMBELVIST include: dizziness headache injection site reaction nausea vomiting feeling hot tingling itchy skin These are not all the possible side effects of AMBELVIST.

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. General information about the safe and effective use of AMBELVIST.

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide. You can ask your healthcare provider for information about AMBELVIST t…

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