Cat's Claw (Uncaria tomentosa) vs Psyllium (Plantago ovata)

Cat's Claw (Uncaria tomentosa)

Psyllium (Plantago ovata)

About

Cat's claw is a climbing vine that can grow to 100 feet or more, with stems up to 8 inches in diameter, large glossy leaves, and sharp hooks resembling a cat's claws. Native to tropical rainforests in the central and eastern Andes - especially Peru, Ecuador, and Colombia - it has also been found in Guatemala, Costa Rica, and Panama. Known by the Ashaninka and other indigenous peoples of central Peru for its power in regulating illness, it has been used since ancient times to treat serious conditions ranging from asthma and diabetes to arthritis and cancer. By the early 1990s, over-collection from the wild threatened the species' survival; only sustainably sourced stem bark should be used, rather than root bark.

Psyllium, also known as flea seed due to its small brown appearance, is produced by several Plantago species. It has been used as a safe and effective laxative for thousands of years across Europe, North Africa, and Asia. The seeds and husks have a bland taste and develop a jellylike consistency when moistened due to their high mucilage content. The plants are extensively cultivated, especially in India, and propagated from seed in spring. Seeds are harvested when ripe in late summer and early autumn.

Safety & precautions

Avoid during pregnancy and while trying to conceive, as cat's claw has contraceptive activity. Alcoholic extracts may inhibit cytochrome P450 enzyme CYP3A4 in vitro, though clinical relevance is uncertain. The herb may have additive antiplatelet and antihypertensive effects when combined with conventional drugs. One isolated case reported increased levels of atazanavir, ritonavir, and saquinavir in a patient taking cat's claw. Only cat's claw containing POAs should be used medicinally, as tetracyclic oxindole alkaloids (TOAs) may suppress immune function. Some preparations are standardized to contain little or no TOAs. Monitor blood pressure and watch for signs of increased bleeding if using with antiplatelet or antihypertensive medications.

Do not exceed the stated dose. Always take with plenty of water. Psyllium is a mild laxative suitable for children, elderly, and during pregnancy, but should be avoided in cases of bowel obstruction or perforations. It can cause constipation when a person is dehydrated. Ensure adequate hydration when using.

Safety text above is printed in full and is never abbreviated. For each plant’s complete precautions, drug and food interactions and preparation notes, open its own page - both are free.