Table 2.
Comparison of 18 cat’s claw extracts from different manufacturer’s for reduction of Aβ 1–42 fibril and/or tau tangles.
| Cat’s claw extract/product name/Company | Major ingredients | % reduction of A13 1–42 Fibrils (1:0.1 wt/wt) |
% reduction of Tau Tangles (1:1 wt/wt) |
|---|---|---|---|
| PTI-00703 cat’s claw (Cognitive Clarity Inc.) | Cat’s claw (Uncaria tomentosa); 25 kg bags | 51.2 | 90.1 |
| GRUPO CENTROFLORA (Centroflora Group) | Cat’s claw (Uncaria tomentosa) bark | 39.3 | 86.6 |
| GoNutra (GoNutra) | Cat’s claw (Uncaria tomentosa) bark; bark powder in 1 lb bags | 34.4 | 61.2 |
| NOW (Now Foods) | Cat’s claw (Uncaria tomentosa) bark; 500 mg capsules | 27.7 | 80.4 |
| STARWEST BOTANICALS (Starwest Botanicals Inc.) | Cat’s claw (Uncaria tomentosa) bark; bark powder in 1 | 25.6 | 64.9 |
| SWANSON (Swanson Health Products) | Cat’s claw (Uncaria tomentosa) bark; 500 mg capsules | 25.1 | 45.2 |
| Peruvian Naturals (Peruvian Naturals) | Cat’s claw (Uncaria tomentosa) bark; 500 mg capsules | 23.4 | 25.1 |
| SOLARAY (Solaray) | Cat’s claw (Uncaria tomentosa) bark; 500 mg capsules | 23.3 | 62.0 |
|
Best Naturals (Best Naturals) |
Cat’s claw (Uncaria tomentosa) bark; 500 mg capsules | 21.5 | 48.7 |
| PROGRESSIVE LABORATORIES (Progressive Laboratories) | Cat’s claw (Uncaria tomentosa) bark; 500 mg capsules | 19.9 | 33.5 |
| RAINTREE FORMULAS (Raintree Formulas) | Cat’s claw (Uncaria tomentosa) bark; 500 mg capsules | 17.2 | 51.9 |
|
Herbal Plus (General Nutrition Corp.) |
Cat’s claw (Uncaria tomentosa) bark; 500 mg capsules | 16.1 | 45.1 |
| Remedy’s Nutrition (Remedy’s Nutrition) | Cat’s claw (Uncaria tomentosa) bark 1000 mg capsules | 15.9 | 60.2 |
|
Nature’s Way (Nature’s Way Products Inc) |
Cat’s claw (Uncaria tomentosa) bark; 335 mg capsules | 15.4 | 64.2 |
| NATURE’S HERBS (Nature’s Herbs) | Cat’s claw (Uncaria tomentosa) bark; 500 mg capsules | 13.5 | 64.6 |
| Pure Mountain BOTANICALS (Pure Mountain Botanicals) | Cat’s claw (Uncaria tomentosa) bark; 500 mg capsules | 12.2 | 51.0 |
| PHARMLINE (Pharmline Inc.) | Cat’s claw (Uncaria tomentosa) bark 500 mg capsules | 9.5 | 60.3 |
| elp essential (Essential Products) | Cat’s claw (Uncaria tomentosa) bark; 700 mg capsules | 8.0 | 20.2 |
Major ingredient details are also compared for each product.