Seaweed and collagen pills could ease arthritic knees

NCT ID NCT07318896

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.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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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.

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

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

    RECRUITING

    Reus, Tarragona, 43204, Spain

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••