Devils Claw Harpagophytum procumbensp Devils claw is the basis for treating painful joints & sore tendons & muscles.p Part used the secondary roots.p 435 mgcapsule of total plant cryoground powder containing 9.5mg glucoiridoids.p Clinical Studiesbr The activity of Devils 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 refe