Devils Claw Harpagophytum procumbens n n Devil s claw is the basis for treating painful joints & sore tendons & muscles. n n Part used the secondary roots. n n 435 mg capsule of total plant cryoground powder containing 9.5mg glucoiridoids. n n Clinical Studies n The activity of Devil s claw is due to the synergy of its active ingredients. This has been shown by studies carried out with total plant cryground powder notably a multicentre clinical study in which it was compared to a reference