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Joyflex® 1.6%

Sodium hyaluronate 16 mg/ml for intra-articular injection

The entry-level product in the viscosupplementation segment: standard formulation, established clinical profile, comprehensive technical documentation.
CLASS

Medical device

FORMAT

2 ml syringe

Dosage

3 injections

AREA

Intra-articular

Joyflex 1.6% is a sterile, biodegradable and isotonic gel for intra-articular use, based on hyaluronic acid obtained through the biofermentation of Streptococcus equi, formulated at a concentration of 16 mg/ml in physiological buffer. Thanks to its viscoelastic properties, it helps to normalise the viscosity of the synovial fluid within the intra-articular cavity.

Indicated as a synovial fluid substitute for the restoration of the rheological conditions of the joint, which are altered in degenerative or post-traumatic conditions — particularly gonarthrosis and arthritic conditions in the symptomatic phase. It acts only at the level of the joint into which it is injected, with no systemic action.

  • Constant molecular weight 1.2–1.5 million Daltons: optimal diffusion and effective binding to the CD44 receptor.

  • Native hyaluronic acid, not chemically modified, from bio-fermentation without animal proteins: allergen risk minimised.

  • Dosage: initial cycle of 3 treatments, 1 every 15 days, providing coverage for 6–12 months.

  • High safety profile; possible transient local reactions (pain, stiffness, redness) manageable with ice.
Evidence
Extensive reference bibliography in the product folder (Cochrane reviews, meta-analyses on over 8,000 patients, studies on knee and hip). The HA–CD44 bond is optimal in the molecular weight range 0.5–4.0×10⁶ Da, into which Joyflex falls.

Specification

Value

Active ingredient

Linear sodium hyaluronate

Molecular weight

1.2–1.5 million Daltons

Viscosity

70,000–120,000 cP

Concentration

32 mg / 2 ml

Osmolarity

270–330 mOsm/kg

pH

6,5–7,5

Volume

2 ml

Origin

Biofermentation

Dosage

3 injections (1 every 15 days, 6/12 months coverage)

Shelf life

36 months

Specification

Value

Active ingredient

Linear sodium hyaluronate

Molecular weight

1.2–1.5 million Daltons

Viscosity

70,000–120,000 cP

Concentration

32 mg / 2 ml

Osmolarity

270–330 mOsm/kg

pH

6,5–7,5

Volume

2 ml

Origin

Biofermentation

Dosage

3 injections (1 every 15 days, 6/12 months coverage)

Shelf life

36 months

Entry-level product for the segment, with a broad clinical reference base and a clear positioning in the orthopaedic and physical medicine channel. It is the go-to reference with which a distributor enters standard viscosupplementation in markets already familiar with the category.

Reference channel

Orthopaedics, physical medicine and rehabilitation, outpatient clinics and centres already practising standard viscosupplementation.

Support included

  • Complete technical and clinical documentation (in accordance with current European regulations, in English).

  • Presentation materials for the healthcare professional, adaptable for the market.

  • Support with positioning against local competitors.

  • Willingness to consider local trade names, subject to regulatory compliance.

Compare the line — Joyflex joint references

Highlighting the column of Joyflex 1.6% - the product on this page.

Specification
Joyflex 1.6%
Joyflex 2%
Joyflex One
Proakjn
Proakjn XL
Active ingredient
linear HA
linear HA
linear HA
HA + MSM
HA + MSM
Mol. weight (Da)
1.2–1.5m
1.2–1.5m
1.2–1.5m
0.8–1.2m
0.8–1.2m
Viscosity (cP)
70–120k
150–290k
150–290k
70–120k
70–120k
Concentration
32 mg/2 ml
40 mg/2 ml
80 mg/4 ml
32+100 mg/2 ml
48+150 mg/3 ml
Osmolarity
270–330
270–330
270–330
800–900
800–900
pH
6,5–7,5
6,5–7,5
6,5–7,5
6,5–7,5
6,5–7,5
Volume
2 ml
2 ml
4 ml
2 ml
3 ml
Injections
3
3
1
3
1
Patent
-
-
-
Yes
Yes
Shelf life
36 months
36 months
36 months
36 months
36 months

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