Cat's Claw is intended to provide nutritional support for a healthy immune system and joints. Solaray Cat's Claw contains a guaranteed potency extract that provides 2.4% Pentacyclic Oxindole Alkaloids (POA), a key ingredient believed to be the source of its health benefits. The level of Tetracyclic Oxindole Alkaloids (TOA) is monitored to ensure maximum health benefits.

Ingredients: Cat's Claw (Uncaria tomentosa) (bark extract) (Guaranteed 4.8 mg [2.4%] POA [pentacyclic oxindole alkaloids]) 200 mg, Cat's Claw (uncaria tomentosa) (bark) 200 mg.

Other Ingredients: Rice Flour, Gelatin Capsule, Cellulose, Silica and Magnesium Stearate.