Seaweed and collagen pills could ease arthritic knees

NCT ID NCT07318896

Recruiting now Symptom relief Sponsor: Fundació Eurecat Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether supplements made from agar-agar (a seaweed extract) and undenatured type II collagen can reduce knee pain in people with osteoarthritis. Eighty adults aged 40 to 70 with mild to moderate knee pain will take capsules daily for several weeks. The goal is to see if these natural ingredients offer a safer alternative to standard painkillers.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: agar-agar and undenatured type II collagen
What this could lead to: If it works, this could point toward a natural, safer supplement to reduce knee pain and improve mobility in people with osteoarthritis.
What could go wrong: This is a small, early-stage trial with no phase designation, so results may not be conclusive. Dietary supplements often show modest effects, and the placebo response in pain studies can be strong.

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Conditions

The condition(s) this trial relates to.

Arthralgia Inflammation inflammatory disease osteoarthritis osteoarthritis, knee

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CARTILAGE DAMAGE INFLAMMATION JOINT DAMAGE OSTEEARTHRITIS

Contacts and locations

Locations

Eurecat, Technological Center of Catalonia, Nutrition and Health Unit
RECRUITING

Reus, Tarragona, 43204, Spain

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