Cynatine® FLX (Solubilized Keratin — Roxlor)

Evidence Level
Moderate
1 Clinical Trial
3 Documented Benefits
3/5 Evidence Score

Cynatine® FLX is a solubilized, bioavailable keratin from Roxlor, formulated for joint support. Keratin is a sulfur-rich structural protein, and the solubilized form is studied for easing joint discomfort and supporting flexibility, with a randomized, placebo-controlled trial behind it.

Studied Dose About 500 mg per day.
Active Compound Solubilized keratin, a bioavailable form of the sulfur-rich structural protein, standardized for joint support.

Benefits

Joint comfort and flexibility

In a randomized, placebo-controlled trial, solubilized keratin supported reductions in joint discomfort and improvements in flexibility and range of motion.

Connective-tissue protein

Keratin supplies sulfur amino acids used in connective tissue, supporting the maintenance of joint and cartilage structures.

Antioxidant sulfur support

The sulfur in keratin supports the body's antioxidant systems, relevant to the oxidative stress involved in joint discomfort.

Mechanism of action

1

Sulfur amino acid delivery

Solubilized keratin provides bioavailable cysteine and other sulfur amino acids used to build and maintain connective tissue and antioxidant molecules.

2

Anti-inflammatory support

Keratin supplementation is studied for lowering joint inflammatory markers, contributing to its comfort benefit.

Clinical trials

1
Solubilized Keratin and Joint Health — RCT
PubMed

Randomized, double-blind, placebo-controlled trial of solubilized keratin for joint health. (Beer et al. 2013, Journal of Dietary Supplements)

Adults with joint discomfort.

Solubilized keratin supported reductions in joint pain and improvements in flexibility and range of motion versus placebo.

Side effects and drug interactions

Common Potential side effects

GENERALLY WELL-TOLERATED — adverse events in the trial were minimal.
Mild digestive upset is occasionally reported.
No known major safety concerns at studied doses.

Important Drug interactions

No significant drug interactions are established.
Generally compatible with other joint supplements.
Tell your doctor if you take medication for arthritis.

Frequently asked questions about Cynatine® FLX (Solubilized Keratin — Roxlor)

What is Cynatine® FLX (Solubilized Keratin — Roxlor)?

Cynatine® FLX is a solubilized, bioavailable keratin from Roxlor, formulated for joint support. Keratin is a sulfur-rich structural protein, and the solubilized form is studied for easing joint discomfort and supporting flexibility, with a randomized, placebo-controlled trial behind it.

What is the recommended dosage of Cynatine® FLX (Solubilized Keratin — Roxlor)?

The clinically studied dose for Cynatine® FLX (Solubilized Keratin — Roxlor) is About 500 mg per day.. Always follow product labeling and consult a healthcare provider for personalized dosing recommendations.

What is Cynatine® FLX (Solubilized Keratin — Roxlor) used for?

Cynatine® FLX (Solubilized Keratin — Roxlor) is studied for joint comfort and flexibility, connective-tissue protein, antioxidant sulfur support. In a randomized, placebo-controlled trial, solubilized keratin supported reductions in joint discomfort and improvements in flexibility and range of motion.

Are there side effects from taking Cynatine® FLX (Solubilized Keratin — Roxlor)?

Reported potential side effects may include: GENERALLY WELL-TOLERATED — adverse events in the trial were minimal. Mild digestive upset is occasionally reported. Always consult a healthcare provider before starting any new supplement, especially if you have underlying conditions or take medications.

Is Cynatine® FLX (Solubilized Keratin — Roxlor) safe to take?

Whether Cynatine® FLX (Solubilized Keratin — Roxlor) is safe depends on the dose, your overall health, and any medications you take. At studied doses, reported side effects can include: GENERALLY WELL-TOLERATED — adverse events in the trial were minimal. It may also interact with certain medications. Cynatine® FLX (Solubilized Keratin — Roxlor) is not suitable for everyone — consult a healthcare provider before use if you are pregnant or breastfeeding, have a medical condition, or take prescription medications.

References(1 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Beer C, Wood S, Veghte RH. A randomized, double-blind, placebo-controlled clinical trial to investigate the effect of cynatine FLX on joint health. J Diet Suppl. 2013;10(3):184-94..PubMedUsed to support: RCT showing joint comfort and flexibility benefit.