Hyaluronate Sodium (Hylartin V, Hyvisc): adverse event reports that FDA received
Active ingredient
Also sold as: Hylartin V, Hyvisc, Equron, Synacid, Hyalovet, Legend, and 1 more brand name.
The openFDA records give the value "MSK" for the brand name and for the manufacturer name of each drug. FDA says that MSK means "masked". So the site cannot count a report for a brand.
Read this first. FDA says this about the data:
An API dataset query result cannot be used to estimate the risk associated with the product or compare one drug or device product with another. When looking at the results, be aware that there is no certainty that the reported drug or device caused the adverse event. This dataset should not be the sole source of information for clinical decision-making or other assumptions about the safety or effectiveness of a product. The adverse event may have been related to an underlying disease, other drugs used at the same time or other non-drug related sources.
FDA Center for Veterinary Medicine publishes these words. Source: Adverse Event Reports for Animal Drugs and Devices, read on . The data have the reports that FDA received through .
This page is not veterinary advice. For an animal that is ill, speak to a veterinarian.
Contacting a veterinarianHow to report to FDAFrom February 1987 to April 2026, FDA received 1,125 adverse event reports that name a drug with hyaluronate sodium as its active ingredient. Of the 1,125 reports, 536 (47.6%) are about horses. 27 reports are about dogs (2.4%).
In January to March 2026, FDA received 30 reports that name this drug. The signs that appear in the largest number of the 1,125 reports are "Lameness", "Joint swelling" and "Product syringe issue". A report is not proof that a drug caused a sign.
Fewer than 20 reports named this drug in the 12 months before June 2026, so this page gives no change. Reports about dogs are 2.4% of the reports that name this drug, and 72.6% of all reports.
Since the last update of the FDA data
The site recorded an update of the FDA data on . FDA changed these counts for January to March 2026:
- All species: from 25 to 30.
January to March 2026 is the latest closed quarter in the data. In that quarter FDA received 30 reports that name hyaluronate sodium: 1 dog, 0 cat, 26 horse, 3 other or not given.
Signs that the reports list
A sign is a coded term from the report. The words in brackets are a plain gloss of the term. The percentage is the share of the 1,125 reports that list the sign. One report can list more than one sign.
The sign that is in the largest number of the reports comes first.
- Lameness15.8%178 reports
- Joint swelling11.7%132 reports
- Product syringe issue[a product quality report, not a sign in an animal]9.3%105 reports
- Stopper, abnormal9.2%103 reports
- Syringe, Abnormal[a product quality report, not a sign in an animal]8.4%95 reports
- Joint effusion6.8%77 reports
- Uncoded sign[a sign with no matching dictionary term]5.7%64 reports
- Joint pain4.7%53 reports
- Joint inflammation4.2%47 reports
- Illness NOS[NOS: not otherwise specified]4.1%46 reports
- Underfilling, Vials[a product quality report, not a sign in an animal]4.1%46 reports
- Injection site swelling[swelling where the injection was given]3.6%41 reports
- Vials, Damaged[a product quality report, not a sign in an animal]3.6%40 reports
- Fever3.4%38 reports
Show the next 16 signs
- Synovitis3%34 reports
- No sign[no clinical sign was reported]2.8%31 reports
- Injection site inflammation[inflammation where the injection was given]2.7%30 reports
- Death by euthanasia[the animal was euthanized]2.5%28 reports
- Seal, Abnormal[a product quality report, not a sign in an animal]2.2%25 reports
- Septic arthritis2.2%25 reports
- Intentional misuse[use that was knowingly different from the label]2.1%24 reports
- Other abnormal test result NOS[abnormal laboratory result, type not specified]1.9%21 reports
- Underfilling, Package[a product quality report, not a sign in an animal]1.8%20 reports
- Synovial fluid, abnormal NOS[NOS: not otherwise specified]1.7%19 reports
- Contamination, Particulate Matter1.6%18 reports
- Injection site pain[pain where the injection was given]1.6%18 reports
- Lethargy[unusually tired or inactive]1.6%18 reports
- Solution, Abnormal[a product quality report, not a sign in an animal]1.6%18 reports
- Vials, Leaking[a product quality report, not a sign in an animal]1.6%18 reports
- Containers, Leaking[a product quality report, not a sign in an animal]1.5%17 reports
The list shows 30 of 357 coded signs. A report is not proof that a drug caused a sign. Download all signs (CSV)
Reports by species
The share is of all 1,125 reports that name hyaluronate sodium. The other reports give a different species or no species.
Reports for each month, Jul 2021 to Jun 2026
No chart: no month has 5 or more reports.
No chart: no month has 5 or more reports.
The month is the month in which FDA received the report. Each chart has its own scale. FDA says that a report can take 3 to 6 months to reach the public data. The newest months can get more reports in a later update.
Reports by year
- Dog
- Cat
- Horse
- Other or not given
| Year | Dog | Cat | Horse | Other or not given | All species |
|---|---|---|---|---|---|
| 2026 | 1 | 0 | 29 | 3 | 33 |
| 2025 | 1 | 0 | 33 | 4 | 38 |
| 2024 | 0 | 0 | 9 | 4 | 13 |
| 2023 | 0 | 0 | 10 | 7 | 17 |
| 2022 | 0 | 0 | 19 | 12 | 31 |
| 2021 | 0 | 0 | 20 | 31 | 51 |
| 2020 | 0 | 0 | 22 | 12 | 34 |
| 2019 | 0 | 0 | 12 | 19 | 31 |
| 2018 | 0 | 0 | 35 | 26 | 61 |
| 2017 | 0 | 0 | 26 | 50 | 76 |
| 2016 | 0 | 0 | 14 | 71 | 85 |
| 2015 | 2 | 1 | 17 | 89 | 109 |
| 2014 | 1 | 0 | 18 | 20 | 39 |
| 2013 | 4 | 0 | 15 | 30 | 49 |
| 2012 | 2 | 0 | 22 | 20 | 44 |
| 2011 | 0 | 0 | 9 | 21 | 30 |
| 2010 | 1 | 0 | 9 | 18 | 28 |
| 2009 | 0 | 0 | 10 | 16 | 26 |
| 2008 | 1 | 0 | 9 | 7 | 17 |
| 2007 | 9 | 0 | 10 | 6 | 25 |
| 2006 | 1 | 0 | 15 | 23 | 39 |
| 2005 | 4 | 0 | 7 | 14 | 25 |
| 2004 | 0 | 0 | 10 | 9 | 19 |
| 2003 | 0 | 0 | 9 | 17 | 26 |
| 2002 | 0 | 0 | 17 | 10 | 27 |
| 2001 | 0 | 0 | 2 | 2 | 4 |
| 2000 | 0 | 0 | 5 | 9 | 14 |
| 1999 | 0 | 0 | 4 | 5 | 9 |
| 1998 | 0 | 0 | 16 | 2 | 18 |
| 1997 | 0 | 0 | 9 | 4 | 13 |
| 1996 | 0 | 0 | 4 | 0 | 4 |
| 1995 | 0 | 0 | 7 | 0 | 7 |
| 1994 | 0 | 0 | 16 | 0 | 16 |
| 1993 | 0 | 0 | 22 | 0 | 22 |
| 1992 | 0 | 0 | 10 | 0 | 10 |
| 1991 | 0 | 0 | 9 | 0 | 9 |
| 1990 | 0 | 0 | 8 | 0 | 8 |
| 1989 | 0 | 0 | 3 | 0 | 3 |
| 1988 | 0 | 0 | 12 | 0 | 12 |
| 1987 | 0 | 0 | 3 | 0 | 3 |
2026 has the reports that FDA received through Apr 2026. Download the years (CSV)
What the reports record
Outcome at the time of the report
- Recovered/Normal10.7%120
- Recovered with Sequela[recovered, with a lasting effect]0.3%3
- Ongoing3.7%42
- Died1.9%21
- Euthanized1.5%17
- Outcome Unknown10.3%116
An outcome in a report is not proof that the drug caused it. The person who sends the report gives the outcome. Each share is of the 1,125 reports that name hyaluronate sodium.
A report about more than one animal can have more than one outcome.
Kind of report
- Safety issue43.6%491
- Lack of expected effectiveness0.5%6
- Both safety and lack of expected effectiveness0.2%2
- Manufacturing or product defect50%562
- Other5.7%64
286 reports say if the event was serious. 61.9% of them have the serious flag. The person who sends the report sets the flag.
Show age, weight, breed and route
Age of the animal
- Under 1 year0%0
- 1 to 3 years3.7%42
- 4 to 7 years8.3%93
- 8 to 11 years7.5%84
- 12 years and over12.2%137
- Age not given68.4%769
Weight of the animal
- Under 5 kg (11 lb)0%0
- 5 to 9.9 kg (11 to 22 lb)0.4%4
- 10 to 24.9 kg (22 to 55 lb)0.3%3
- 25 to 44.9 kg (55 to 99 lb)0.4%5
- 45 kg and over (99 lb and over)21.2%238
- Weight not given77.8%875
Breed, where the report gives one breed
- Quarter Horse8.1%91
- Thoroughbred5.7%64
- Standardbred3%34
- Warmblood2%23
- Dutch Warmblood1.2%14
- Paint0.8%9
- American Standardbred0.7%8
- Appaloosa0.6%7
A breed with many animals has many reports.
Route in the report
- Intra-Articular28.6%322
- Intravenous6.4%72
- Intraocular1.3%15
- Intra-Arterial0.7%8
- Intramuscular0.5%6
- Intrasynovial0.4%5
Each bar is on a scale of 0 to 100%.
Approved animal drugs with this active ingredient (FDA Green Book)
This section is reference data. It has no report count.
The openFDA records give the value "MSK" for the brand name and for the manufacturer name of each drug. FDA says that MSK means "masked". So the site cannot count a report for a brand.
Brand names
- Hylartin V
- Hyvisc
- Equron
- Synacid
- Hyalovet
- Legend
- NexHA
What the Green Book records give
- Applications with an approval in force
- 7
- Approved species
- Equids, Horses
- Dose forms
- Liquid (Solution), Injectable Solution
- Routes
- Intra-Articular, Intravenous
- Sale
- RX (prescription)
- Earliest approval date in the records
The species, dose forms and routes are the words of the Green Book records for all the applications together. One product can have fewer. The label of a product gives its approved use.
| Brand name | Active ingredients | Sponsor | Approved species | Application |
|---|---|---|---|---|
| Hylartin V; Hylartin V Injection | Hyaluronate Sodium | Zoetis Inc. | Horses | NADA 112-048 |
| Hyvisc | Hyaluronate Sodium | Anika Therapeutics | Horses | NADA 122-578 |
| Equron | Hyaluronate Sodium | Zoetis Inc. | Horses | NADA 139-913 |
| Synacid | Hyaluronate Sodium | Intervet, Inc. | Horses | NADA 140-474 |
| Hyalovet | Hyaluronate Sodium | Boehringer Ingelheim Animal Health USA, Inc. | Horses | NADA 140-806 |
| Legend Injectable Solution; Legend Multi Dose | Hyaluronate Sodium | Boehringer Ingelheim Animal Health USA, Inc. | Horses | NADA 140-883 |
| NexHA | Hyaluronate Sodium | Vetoquinol USA, Inc. | Horses | ANADA 200-432 |
Next in the A to Z list
FDA pages for this drug
- How to Report Animal Drug and Device Side Effects and Product ProblemsThe FDA page that tells an owner or a veterinarian how to send a report.
- Green Book record of NADA 112-048The FDA record of the application for Hylartin V, Hylartin V Injection.
- Green Book record of NADA 122-578The FDA record of the application for Hyvisc.
- Green Book record of NADA 139-913The FDA record of the application for Equron.
- Green Book record of NADA 140-474The FDA record of the application for Synacid.
- Green Book record of NADA 140-806The FDA record of the application for Hyalovet.
- Green Book record of NADA 140-883The FDA record of the application for Legend Injectable Solution, Legend Multi Dose.
- Animal Drugs @ FDAThe search page of the Green Book, the FDA list of approved animal drugs.
The site checked these addresses on . The links open in a new tab.
Cite this page
Pet Drug Reports. Hyaluronate Sodium: adverse event reports that FDA received. https://petdrugreports.com/drug/hyaluronate-sodium/ Source: FDA Center for Veterinary Medicine, openFDA Animal and Veterinary adverse event reports, export of . Reports received through .
Where the data come from
The counts come from the openFDA Animal and Veterinary adverse event files, export of 30 Oct 2026. The files have the reports that the FDA Center for Veterinary Medicine received through 26 Jun 2026. The files mask brand and manufacturer names. The site counts a drug by the active ingredients that each record gives, and gives no count to a brand, an application or a company. Ingredient names and the lists of approved products follow the FDA Green Book of 2 Nov 2026. The site does not use the application number that a record has.
The site does not publish report text, lot numbers or details of a reporter. FDA's record is the authority. See how the site counts reports, the data sources and the corrections page.
Questions about these reports
- Which brand are these reports about?
The openFDA records give the value "MSK" for the brand name and for the manufacturer name of each drug. FDA says that MSK means "masked". So the site cannot count a report for a brand. The Green Book section of this page lists the brand names with this active ingredient.
- Do the reports show that the drug caused the signs?
No. FDA states this about the data.
When looking at the results, be aware that there is no certainty that the reported drug or device caused the adverse event.
The adverse event may have been related to an underlying disease, other drugs used at the same time or other non-drug related sources.
FDA Center for Veterinary Medicine. Source: Adverse Event Reports for Animal Drugs and Devices
- How many reports did FDA receive in the latest 12 months?
FDA received 57 reports in the 12 months to June 2026. It received 19 reports in the 12 months before. FDA says that a report can take 3 to 6 months to reach the public data. The newest months can get more reports in a later update.
- What kinds of report are in the count?
Of the 1,125 reports received from February 1987 to April 2026, 43.6% are about a safety issue only. 0.7% are about a lack of expected effectiveness, alone or with a safety issue. 50% are about a defect of the product or its package.