Note: This document contains side effect information about sodium hyaluronate. Some dosage forms listed on this page may not apply to the brand name Euflexxa.

Applies to sodium hyaluronate: injection gel/jelly, injection solution.

Serious side effects of Euflexxa

Along with its needed effects, sodium hyaluronate (the active ingredient contained in Euflexxa) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking sodium hyaluronate:

Less common

• Blue color or flushing or redness of skin
• cough
• difficulty in swallowing
• dizziness or feeling faint (severe)
• fever
• redness or pain at place of injection
• skin rash, hives, and/or itching
• stuffy nose
• swelling of eyelids, face, or lips
• tightness in chest, troubled breathing, and/or wheezing

Other side effects of Euflexxa

Some side effects of sodium hyaluronate may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

• Diarrhea
• headache
• itching of the skin
• large, nonelevated blue or purplish patches in the skin
• loss of appetite
• nausea and/or vomiting
• stomach pain
• swelling of the knee

For Healthcare Professionals

Applies to sodium hyaluronate: intra-articular solution.

Local

Common (1% to 10%): Injection site pain/swelling/effusion/redness/warmth

Uncommon (0.1% to 1%):^[Ref]

Hypersensitivity

Frequency not reported: Hayfever reaction on face and neck, reaction on forearms and knees

Postmarketing reports: Anaphylaxis/anaphylactoid reaction^[Ref]

Other

Frequency not reported: Swelling of the face/eyelids/mouth/extremities, fever^[Ref]

Gastrointestinal

Common (1% to 10%): Nausea, vomiting, abdominal pain, diarrhea, dyspepsia^[Ref]

Cardiovascular

Frequency not reported: Transient hypotension^[Ref]

Musculoskeletal

Very common (10% or more): Arthralgia (18%), arthropathy/arthrosis/arthritis (11%)

Common (1% to 10%): Back pain, leg discomfort, leg pain^[Ref]

Immunologic

Common (1% to 10%): Influenza-like reaction^[Ref]

Genitourinary

Common (1% to 10%): Urinary tract infection^[Ref]

Respiratory

Common (1% to 10%): Upper respiratory tract infection, sinusitis, bronchitis, rhinitis^[Ref]

Nervous system

Common (1% to 10%): Headache, dizziness^[Ref]

Dermatologic

Frequency not reported: Rash, itching^[Ref]