Kudzu Root (Pueraria lobata): A Botanical Guide

Kudzu was planted across the south-eastern United States as ground cover and fodder, and is now classed there as an invasive species. The part that matters to us is underground: a large starchy root, dug, dried and extracted. This guide covers what is in the capsules, how to take them, and the cautions — which for this plant run long.

Latin name

Pueraria lobata

Part used

Root

Origin

East Asia

Serving

2 capsules daily

Format

Capsules only

Allergens

None declared — but kudzu is a legume

01 What Kudzu Root is

A fast-growing perennial climbing vine, botanically in the pea and bean family alongside soya, peas and clover. That family produces isoflavones. Kudzu root is one of the richer sources.

Its native range is East Asia — China, Japan and Korea — where it has been grown and gathered for centuries. It reached the south-eastern United States in the late nineteenth and early twentieth centuries, first as an ornamental, then for ground cover and fodder.

It spread far beyond where it was planted and is now treated there as an invasive species.

That reputation belongs to the American landscape story, not to the material used in supplements.

The part used is the root: a large, starchy, tuberous underground store. It is dug, sliced and dried, then either milled to a powder or processed further into an extract. Root material entering the supplement trade is drawn from both cultivated plantings and wild-growing stands in East Asia, and both routes are ordinary practice for this plant. Kudzu roots freely from cut stems and grows quickly, so cultivation is straightforward where the climate suits it.

Common name

Kudzu, kudzu root

Latin binomial

Pueraria lobata (also classified as Pueraria montana var. lobata)

Plant family

Fabaceae — the legume, pea and bean family

Part used

Root (dried, then extracted)

Native range

East Asia — China, Japan, Korea

Growth habit

Perennial climbing and trailing vine

Characteristic constituents

Isoflavones, including puerarin and daidzein

02 What's in our product

ProBotanics Kudzu is a food supplement in capsule form. Two ingredients, nothing else — no fillers, no binders, no flow agents, no colours.

Active ingredient

Pure kudzu root extract (Pueraria lobata root), standardised to 40% isoflavones

Capsule shell

Hypromellose — a plant-derived cellulose shell

Other ingredients

None

Suitable for

Vegans and vegetarians

Format

Capsules only. We do not make a kudzu tincture or drops.

Serving

2 capsules daily

What "standardised to 40% isoflavones" actually means

Standardisation is a measurement, not an addition. Each batch of extract is tested and adjusted so that a fixed proportion of the finished extract is made up of the marker compounds — here, the root's naturally occurring isoflavones.

The arithmetic is simple.

In any 100 mg of the extract, 40 mg are isoflavones and 60 mg are the rest of the extracted root material.

Half that amount of extract carries half the isoflavones. The ratio holds whatever the capsule weight, which is the point of standardising: it removes the batch-to-batch swing you get with plain milled root, where isoflavone content varies with growing conditions, harvest timing and the age of the root.

An extract ratio such as 10:1 measures something else entirely. A ratio describes concentration by weight of starting material — 10:1 means 10 kg of dried root was reduced to 1 kg of extract, so 100 mg of that extract came from 1 g of root. It tells you nothing about how much of any constituent ended up in the finished powder. A standardisation percentage does. Where the two are quoted together, the percentage is the more informative number.

The capsule weight in milligrams, the number of capsules in the pack and the batch and best-before details are printed on the pack and shown on the product page. We have not reproduced a milligram figure here rather than risk quoting one that does not match your pack. Read the label you have.

At 2 capsules a day, divide the capsule count by two. A 60-capsule pack covers 30 days; a 90-capsule pack covers 45.

Allergens

The product contains no declarable allergens as an ingredient. Kudzu is, however, a legume — the same botanical family as soya, peanuts, peas and lupin. If you have a known legume allergy, treat kudzu with the same caution you would apply to any new plant from that family, and speak to your doctor or pharmacist before taking it.

03 How to take it

Take 2 capsules daily, preferably with a meal and water. Do not exceed the recommended amount.

Some practical notes:

• With food. Taking capsules with a meal is the label direction and is the simpler routine for most people. Concentrated plant extracts on an empty stomach are more likely to feel uncomfortable.
• Timing. The label does not specify a time of day. Pick the meal you eat most reliably and keep to it — consistency matters more than the hour.
• Both at once or split. The direction is 2 capsules daily. Taking them together with one meal, or one with each of two meals, both fit that. Do not take more than two in a day in order to "catch up" on a missed day.
• Water. Swallow with a full glass of water, sitting or standing upright.
• Drops. Not applicable — this product is capsules only.

Storage

Cool, dry place, out of direct sunlight. Keep the lid closed.

Keep away from

Children. Store out of sight and reach.

Bathroom cabinets

Not ideal — heat and humidity are the enemies of a dry capsule.

After opening

Use by the best-before date on the pack.

04 Taste and format

Capsules are made to be swallowed whole, so in normal use you taste very little — a faint dry note at most if a capsule sits on the tongue. The hypromellose shell is odourless and neutral.

Open one and you get a fine beige to light-brown powder with a faint, dry, earthy smell. The taste is earthy and slightly bitter, with the mild starchiness you would expect from a root. It is not pleasant loose, and it is not meant to be taken that way. We supply capsules precisely because concentrated root extract is unappealing on a spoon.

The capsules are a standard swallowable size. If you find capsules difficult, take them with a decent mouthful of water and tip your chin slightly down rather than up as you swallow — capsules float, so a lowered chin lets them travel down with the water. If swallowing remains a problem, speak to a pharmacist rather than emptying the contents into food.

05 The short version

A legume-family botanical with a long history of use in herbal practice. Our version is deliberately plain: root extract standardised to 40% isoflavones, a plant-based capsule shell, nothing else. Two capsules a day with a meal. The caution list is longer than for most botanicals we sell, because phytoestrogens warrant it — read it, and check with a pharmacist if you take any medicine at all.

UK Standard delivery

£3.95 — free on orders of £30 or more

UK Express delivery

£4.95 — free on orders of £48 or more

Dispatch

Within 1–2 business days

Delivery time

Typically 1–4 business days

Carriers

Royal Mail and Amazon Logistics

Returns

30 days from receipt to request a return. Items must be unopened, untampered, in original packaging, with proof of purchase. Email hello@probotanics.co.uk to start; accepted returns receive a return label and instructions. Items sent back without requesting a return first are not accepted. For damaged, defective or wrong items, contact us immediately on receipt.

Sold by

ProBotanics Ltd, 86-90 Paul Street, London, EC2A 4NE. UK company number 13685177.

This is a food supplement, not a medicine. It is not intended to diagnose, treat, cure or prevent any medical condition, and is not a substitute for a varied diet and a healthy lifestyle. If you are pregnant, breastfeeding, taking any medication or under medical care, speak to your doctor or pharmacist before use.