Cat's claw powder comes from the raw, unprocessed bark of the Uncaria tomentosa vine, a staple in traditional Amazonian medicine. The powder holds onto the whole herb's natural profile, unlike standardized extracts that isolate specific compounds. People turn to the raw powder for general immune defense and mild joint comfort. You can take it in capsules or steep it as a tea. Active compound levels shift from batch to batch, so effects are less predictable than with standardized extracts. Taking the powder alongside meals helps ease digestion and cuts down on stomach upset.
Watch for interactions with blood thinners like warfarin, blood pressure drugs, and immunosuppressants. Do not use cat's claw during pregnancy or while breastfeeding. Solid safety data is missing for those groups. Stop taking it at least two weeks before any scheduled surgery. The herb can affect blood pressure and immune responses.