A combination of clinically trialled doses of glucosamine and chondroitin with OptiMSM® Methylsulfonylmethane (MSM) to provide a triple action joint formula to relieve symptoms of mild joint swelling, pain and cartilage wear.

Hours spent pounding pavement or in the gym can have an impact on your joints over time, GCM COMPLEX has been formulated to address joint damage that is detrimental not only to your performance during workouts, but also everyday life.

  • Developed with patented dimethyl sulfone – OptiMSM®.
  • High-strength glucosamine sulfate, chondroitin sulfate, MSM.
  • Enhances joint mobility.
  • Relieves mild joint pain and stiffness.
  • 90 film-coated tablets.

A Product Fact Sheet is available for download above.

Each film-coated tablet contains:

Glucosamine sulfate sodium chloride - 942 mg
equiv. glucosamine sulfate - 750 mg

Bovine sodium chondroitin sulfate - 553.85 mg
equiv. chondroitin sulfate - 400 mg

Dimethyl sulfone (OptiMSM®) - 200 mg

*OptiMSM® is a registered trademark of Bergstrom Nutrition.

Adults: Take two (2) tablets per day with food or as directed by your healthcare professional.

  • If symptoms persist, consult a healthcare professional.
  • Vitamin supplements should not replace a balanced diet.
  • Do not use if seal is broken. Store below 30˚C.
  • Free from gluten, dairy, nuts and egg.
  • Contains soy derived substances and traces of crustaceans.

GCM COMPLEX is Informed Sport Certified.

To obtain the relevant Batch Certificate for this product, head to our Batch Certificate Library and search for your product’s batch number to find the corresponding certificate.

For any questions in relation to our certified products, please email

Why does GCM COMPLEX have such large tablets?
The potency of our formulation means that less daily tablets are required.

GCM COMPLEX has one of the highest per tablet doses on the market, which means our tablets are larger than most. Our formulations have been developed to provide a clinical dosage of two (2) tablets per day, as opposed to three or four.

Our tablets have been designed with a ‘break bar’ to allow a single tablet to be taken in two halves for easy consumption.

What is Opti MSM?
Our GCM COMPLEX features one of the most clinically studied MSM ingredients on the market – OptiMSM®.

OptiMSM® is made up of 34% sulfur – the fourth most abundant mineral in our body – which is used for the maintenance of healthy joints, tendons, ligaments and other connective tissue.

OptiMSM® has been clinically trialled for efficacy, effectiveness in addressing joint pain and is renowned for its purity.

Can I take this product if I have allergies to shellfish?
GCM COMPLEX contains glucosamine sulfate and therefore should not be consumed by anyone with allergies to shellfish.