Botanical Name: Harpagophytum procumbens Plant Part Extracted: Secondary Tuber Contains: grain alcohol, distilled water & Devil's Claw extractives. Description: We prepare our Devil's Claw Extract from the tubers of Harpagophytum procumbens plants which are Custom WildcraftedT in their wild native habitat in South Africa's Kalahari Desert. To assure optimal extraction of Devil's Claw's bioactive compounds, we harvest and extract only the secondary storage tubers, and not the primary central root. Our Devil's Claw is never fumigated or irradiated. .