BioPure's cautions re: Herbs

[Guest guest]

Cautions and Contraindications:

Androdgraphis: Large dosage or long term usage may injure stomach function.

Contraindicated for ulcers in duodenum or in stomach. Large doses may upset the

stomach, possible vomiting.

Smilax: Black tea (tannin). Can increase the absorption of some drugs,

particularly digitalis.

Japanese Knotweed: Large dosages and/or long term usage can be toxic to

kidneys.

Quintessence Blend: Not intended for use for children or during pregnancy or

when breast feeding except under the care of a licensed medical practitioner.

Andrographis is a natural contraceptive and may cause miscarriage.

Anybody understand why knotweed can cause kidney issues?