The outer husks of the horse chestnut fruit are poisonous. There are also reported cases of poisoning from eating raw horse chestnuts.
No necessary precautions to observe in the diet.
No particular precautions have been reported as being necessary in using cyperus.
Not to be taken during pregnancy.
Conkers.
No special precautions are necessary when cuscuta is used in the doses normally prescribed by herbalists.
Large doses: gastrointestinal irritation, nausea, vomiting. Possible allergic reaction of skin rash and itching. Rare reports of kidney problems.
Shiitake is nontoxic and safe to ingest.
Research is limited, there have been no precautions issued. Be aware of the known side effects of red wine and resveratrol.
Not to be used internally by people with gastrointestinal ulcer or children.
Preferably to be administered under the supervision of a medical practitioner.
Not to be taken by pregnant or nursing women. Use precautions when identifying the herb, often confused with hemlock parsley and poison hemlock.
Not to be used by pregnant or lactating women or those with uterine inflammation or pelvic infection.