Antioxidants
Polygonum cuspidatum
A polyphenol extracted from Japanese knotweed root.
Serving range
100 mg – 500 mgper serving
Typical starting point: 250 mg
Available formats
Capsules
Available in capsule blends.
Dietary
Part of the reviewed catalog — every ingredient is checked for identity, regulatory status, quality documentation, and manufacturability before it can appear in the builder. Our ingredient standards →
Review this ingredient's caution information before ordering. Speak with a qualified healthcare professional if you are pregnant, nursing, under 18, taking medication, or managing a medical condition.
The builder
Pick your amount and combine it with anything else in the catalog — checked live as you build.